public static void main(String[] args) throws Exception {
Configuration con = new Configuration();
String[] otherArgs = new GenericOptionsParser(con, args).getRemainingArgs();
HBaseConfiguration conf = new HBaseConfiguration();
Job job = new Job(conf, "AverageCalc");
job.setJarByClass(AverageCalculator.class);
Scan scan = new Scan();
scan.setCaching(500);
scan.setCacheBlocks(false);
scan.addFamily(Bytes.toBytes("Post"));
FilterList li = new FilterList(FilterList.Operator.MUST_PASS_ALL);
SingleColumnValueFilter filter =
new SingleColumnValueFilter(
Bytes.toBytes("Post"),
Bytes.toBytes("PostTypeId"),
CompareOp.EQUAL,
Bytes.toBytes("1"));
li.addFilter(filter);
scan.setFilter(li);
FileOutputFormat.setOutputPath(job, new Path(otherArgs[0]));
job.setOutputKeyClass(Text.class);
TableMapReduceUtil.initTableMapperJob(
"bigd24-hbase-sample", scan, Mapper1.class, Text.class, IntWritable.class, job);
job.setReducerClass(Reducer1.class);
job.setOutputValueClass(FloatWritable.class);
System.exit(job.waitForCompletion(true) ? 0 : 1);
}
public static List<String> getBooksbyPrice(String min, String max) throws IOException {
List list = new ArrayList<String>();
Scan scan = new Scan();
scan.setMaxVersions();
FilterList filterList = new FilterList();
Filter maxFilter =
new SingleColumnValueFilter(
Bytes.toBytes("statics"),
Bytes.toBytes("price"),
CompareOp.GREATER_OR_EQUAL,
Bytes.toBytes(min));
Filter minFilter =
new SingleColumnValueFilter(
Bytes.toBytes("statics"),
Bytes.toBytes("price"),
CompareOp.LESS_OR_EQUAL,
Bytes.toBytes(max));
filterList.addFilter(maxFilter);
filterList.addFilter(minFilter);
scan.setFilter(filterList);
ResultScanner rs = table.getScanner(scan);
for (Result r : rs) {
String str = "title: " + Bytes.toString(r.getRow());
for (KeyValue kv : r.raw()) {
str = str + " " + Bytes.toString(kv.getQualifier()) + ": ";
str += Bytes.toString(kv.getValue());
}
System.out.println(str);
list.add(str);
}
return list;
}
public String[] getObjectIDs(String objectType, String... tags) throws IOException {
List<String> ret = new ArrayList<String>();
FilterList list = new FilterList(FilterList.Operator.MUST_PASS_ALL);
SingleColumnValueFilter filter1 =
new SingleColumnValueFilter(
"tags".getBytes(), "OBJECTTYPE".getBytes(), CompareOp.EQUAL, Bytes.toBytes(objectType));
list.addFilter(filter1);
for (String tag : tags) {
SingleColumnValueFilter filter2 =
new SingleColumnValueFilter(
"tags".getBytes(), tag.toUpperCase().getBytes(), CompareOp.EQUAL, Bytes.toBytes(1));
filter2.setFilterIfMissing(true);
list.addFilter(filter2);
}
Scan s = new Scan();
s.setFilter(list);
s.setMaxVersions(1);
ResultScanner scanner = htable.getScanner(s);
try {
for (Result rr = scanner.next(); rr != null; rr = scanner.next()) {
String localObjectType =
new String(rr.getValue("tags".getBytes(), "OBJECTTYPE".getBytes()));
String localObjectId = new String(rr.getValue("tags".getBytes(), "OBJECTID".getBytes()));
ret.add(localObjectId);
}
} finally {
scanner.close();
}
return ret.toArray(new String[] {});
}
public static ResultScanner getList(
String startRowRange,
String stopRowRange,
byte[] cf1,
byte[] cf2,
long limit,
FilterList filterList,
String ctableName) {
Scan scan = new Scan();
scan.addFamily(cf1);
scan.setStartRow(Bytes.toBytes(startRowRange));
if (stopRowRange != null) {
scan.setStopRow(Bytes.toBytes(stopRowRange));
}
if (limit != 0) {
filterList.addFilter(new PageFilter(limit));
} else {
filterList.addFilter(new PageFilter(100));
}
scan.setFilter(filterList);
ResultScanner resultScanner = null;
try {
resultScanner = tblMngr.getTable(ctableName).getScanner(scan);
} catch (Exception e) {
}
return resultScanner;
}
/**
* make the hbase filter for selecting values of y-axis(response time) in order to select
* transactions in scatter chart. 4 bytes for elapsed time should be attached for the prefix of
* column qualifier for to use this filter.
*
* @param area
* @param offsetTransactionId
* @param offsetTransactionElapsed
* @return
*/
private Filter makeResponseTimeFilter(
final SelectedScatterArea area,
final TransactionId offsetTransactionId,
int offsetTransactionElapsed) {
// filter by response time
ResponseTimeRange responseTimeRange = area.getResponseTimeRange();
byte[] responseFrom = Bytes.toBytes(responseTimeRange.getFrom());
byte[] responseTo = Bytes.toBytes(responseTimeRange.getTo());
FilterList filterList = new FilterList(Operator.MUST_PASS_ALL);
filterList.addFilter(
new QualifierFilter(CompareOp.GREATER_OR_EQUAL, new BinaryPrefixComparator(responseFrom)));
filterList.addFilter(
new QualifierFilter(CompareOp.LESS_OR_EQUAL, new BinaryPrefixComparator(responseTo)));
// add offset
if (offsetTransactionId != null) {
final Buffer buffer = new AutomaticBuffer(32);
buffer.put(offsetTransactionElapsed);
buffer.putPrefixedString(offsetTransactionId.getAgentId());
buffer.putSVar(offsetTransactionId.getAgentStartTime());
buffer.putVar(offsetTransactionId.getTransactionSequence());
byte[] qualifierOffset = buffer.getBuffer();
filterList.addFilter(
new QualifierFilter(CompareOp.GREATER, new BinaryPrefixComparator(qualifierOffset)));
}
return filterList;
}
private void addANDColsToFinalList(FilterList filterList) {
for (Entry<Column, Pair<Value, Value>> entry : colWithOperators.entrySet()) {
Pair<Value, Value> value = entry.getValue();
if (value.getFirst() != null && value.getSecond() != null) {
// Here we are introducing a new Filter
SingleColumnRangeFilter rangeFltr =
new SingleColumnRangeFilter(
entry.getKey().getFamily(),
entry.getKey().getQualifier(),
entry.getKey().getValuePartition(),
value.getFirst().getValue(),
value.getFirst().getOperator(),
value.getSecond().getValue(),
value.getSecond().getOperator());
filterList.addFilter(rangeFltr);
} else if (value.getFirst() != null) {
if (value.getFirst().getOperator() == CompareOp.EQUAL) {
filterList.addFilter(value.getFirst().getFilter());
} else {
SingleColumnRangeFilter rangeFltr =
new SingleColumnRangeFilter(
entry.getKey().getFamily(),
entry.getKey().getQualifier(),
entry.getKey().getValuePartition(),
value.getFirst().getValue(),
value.getFirst().getOperator(),
null,
null);
filterList.addFilter(rangeFltr);
}
}
}
}
/**
* Since you can use Filter Lists as children of Filter Lists, you can create a hierarchy of
* filters to be evaluated. In the hierarchy if OR branch having any filter type other than SCVF
* as child then we should not consider the branch for scanning because we cannot fetch seek
* points from other type of filters without column and value details. Ex: AND AND
* __________|_______ | | | --> SCVF OR SCVF _______|______ | | ROWFILTER SVCF If the OR is root
* then we should skip index table scanning for this filter. OR _______|______ --> null | |
* ROWFILTER SVCF If the OR is child of another OR branch then parent OR branch will be excluded
* for scanning. Ex: AND AND __________|_______ | | | --> SCVF OR SCVF _______|______ | | OR SVCF
* _______|______ | | ROWFILTER SVCF
*
* @param filter
* @return if filter is filter list with AND condition then we will return AND branch after
* grouping. if filter is filter list with OR condition return null if no children is of type
* other than SCVF or filter list else return different filter. if filter is SCVF then return
* null. returning null means we are combining the filter(s) with children of parent OR filter
* to perform optimizations.
*/
private Filter handleFilterWithinOR(Filter filter) {
if (filter instanceof FilterList) {
FilterList fList = (FilterList) filter;
if (fList.getOperator() == Operator.MUST_PASS_ONE) {
List<Filter> filters = fList.getFilters();
Filter resultFilter = null;
for (Filter subFilter : filters) {
// If this OR branch in the filter list have filter type other than SCVF we should report
// it to parent by returning the other type of filter in such a way that the branch will
// be skipped from index scan.
resultFilter = handleFilterWithinOR(subFilter);
if (resultFilter == null || (resultFilter instanceof FilterList)) {
continue;
} else {
return resultFilter;
}
}
return null;
} else {
return new FilterGroupingWorker().group(fList);
}
} else if (filter instanceof SingleColumnValueFilter) {
handleScvfOfOR((SingleColumnValueFilter) filter);
return null;
} // TODO when we expose SingleColumnRangeFilter to handle that also here.
// filter other than SingleColumnValueFilter.
return filter;
}
public static void setRowKeyOffset(Scan scan, int offset) {
Filter filter = scan.getFilter();
if (filter == null) {
return;
}
if (filter instanceof FilterList) {
FilterList filterList = (FilterList) filter;
for (Filter childFilter : filterList.getFilters()) {
setRowKeyOffset(childFilter, offset);
}
} else {
setRowKeyOffset(filter, offset);
}
}
private Filter handleFilterWithinAND(Filter filter) {
if (filter instanceof FilterList) {
FilterList fList = (FilterList) filter;
if (fList.getOperator() == Operator.MUST_PASS_ONE) {
return new FilterGroupingWorker().group(fList);
} else {
List<Filter> filters = fList.getFilters();
for (Filter subFilter : filters) {
handleFilterWithinAND(subFilter);
}
}
} else if (filter instanceof SingleColumnValueFilter) {
handleScvf((SingleColumnValueFilter) filter);
} // TODO when we expose SingleColumnRangeFilter to handle that also here.
return null;
}
public Filter group(Filter filter) {
if (filter instanceof FilterList) {
FilterList fList = (FilterList) filter;
// We need to create a new FL here taking up only the filters of our interest
FilterList newFList = new FilterList(fList.getOperator());
List<Filter> filters = fList.getFilters();
if (fList.getOperator() == Operator.MUST_PASS_ONE) {
for (Filter subFilter : filters) {
Filter resultFilter = handleFilterWithinOR(subFilter);
// If result filter is not SingleColumnValueFilter or filter list that means OR branch is
// having different type of filter other than SCVF. In that case we should not consider
// the OR branch for scanning.
if (resultFilter instanceof FilterList) {
newFList.addFilter(resultFilter);
} else if (resultFilter != null) {
// This means OR filter list have at least one filter other than SCVF(may be other
// child OR branches).
return null;
}
}
addORColsToFinalList(newFList);
if (newFList.getFilters().isEmpty()) {
return null;
}
return newFList;
} else {
// AND condition as long as the condition is AND in one sub tree all those can be
// grouped under one AND parent(new one).
for (Filter subFilter : filters) {
Filter group = handleFilterWithinAND(subFilter);
// group is null means, all are AND conditions and will be handled at once with the
// below createFinalFilter
if (group != null) {
newFList.addFilter(group);
}
}
addANDColsToFinalList(newFList);
if (newFList.getFilters().isEmpty()) {
return null;
}
return newFList;
}
} else if (filter instanceof SingleColumnValueFilter
|| filter instanceof SingleColumnRangeFilter) {
return filter;
}
return null;
}
public static void andFilterAtEnd(Scan scan, Filter andWithFilter) {
if (andWithFilter == null) {
return;
}
Filter filter = scan.getFilter();
if (filter == null) {
scan.setFilter(andWithFilter);
} else if (filter instanceof FilterList
&& ((FilterList) filter).getOperator() == FilterList.Operator.MUST_PASS_ALL) {
FilterList filterList = (FilterList) filter;
List<Filter> allFilters = new ArrayList<Filter>(filterList.getFilters().size() + 1);
allFilters.addAll(filterList.getFilters());
allFilters.add(andWithFilter);
scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL, allFilters));
} else {
scan.setFilter(
new FilterList(FilterList.Operator.MUST_PASS_ALL, Arrays.asList(filter, andWithFilter)));
}
}
/** 封装查询条件 */
private FilterList packageFilters(SearchParam searchParam, boolean isPage) {
FilterList filterList = null;
// MUST_PASS_ALL(条件 AND) MUST_PASS_ONE（条件OR）
filterList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
if (isPage) {
filterList.addFilter(new FirstKeyOnlyFilter());
}
if (StringUtils.isNotEmpty(searchParam.getHbaseFilter())) {
// 将fel expression转为filter
Filter userInputFilter =
HbaseFilterUtil.createFilterByFelExpr(
searchParam.getFamily(), searchParam.getHbaseFilter());
logger.info("[Filter for export " + searchParam.getTableName() + "] " + userInputFilter);
filterList.addFilter(userInputFilter);
}
return filterList;
}
@Test
/** FilterListAdapter should handle the fact that PageFilterAdapter returns null. */
public void testPageFilter() throws IOException {
byte[] qualA = Bytes.toBytes("qualA");
PageFilter pageFilter = new PageFilter(20);
FilterList filterList =
new FilterList(
Operator.MUST_PASS_ALL,
new QualifierFilter(CompareOp.EQUAL, new BinaryComparator(qualA)),
pageFilter);
FilterAdapter adapter = FilterAdapter.buildAdapter();
Optional<RowFilter> adapted =
adapter.adaptFilter(
new FilterAdapterContext(new Scan(), new DefaultReadHooks()), filterList);
Assert.assertTrue(adapted.isPresent());
Optional<RowFilter> qualifierAdapted =
adapter.adaptFilter(
new FilterAdapterContext(new Scan(), new DefaultReadHooks()),
filterList.getFilters().get(0));
Assert.assertEquals(qualifierAdapted.get(), adapted.get());
}
private void addORColsToFinalList(FilterList filterList) {
for (Entry<Column, List<Value>> entry : colWithOperatorsOfOR.entrySet()) {
List<Value> valueList = entry.getValue();
for (Value value : valueList) {
if (value.getOperator() == CompareOp.EQUAL) {
filterList.addFilter(value.getFilter());
} else {
SingleColumnRangeFilter rangeFltr =
new SingleColumnRangeFilter(
entry.getKey().getFamily(),
entry.getKey().getQualifier(),
entry.getKey().getValuePartition(),
value.getValue(),
value.getOperator(),
null,
null);
filterList.addFilter(rangeFltr);
}
}
}
}
/**
* Process the traversal start event for a query {@link org.plasma.query.model.Literal literal}
* within an {@link org.plasma.query.model.Expression expression} creating an HBase {@link
* org.apache.hadoop.hbase.filter.RowFilter row filter} and adding it to the filter hierarchy.
* Looks at the context under which the literal is encountered and if a user defined row key token
* configuration is found, creates a regular expression based HBase row filter.
*
* @param literal the expression literal
* @throws GraphFilterException if no user defined row-key token is configured for the current
* literal context.
*/
@Override
public void start(Literal literal) {
String content = literal.getValue();
if (this.contextProperty == null)
throw new IllegalStateException("expected context property for literal");
if (this.contextType == null)
throw new IllegalStateException("expected context type for literal");
if (this.rootType == null) throw new IllegalStateException("expected context type for literal");
if (this.contextHBaseCompareOp == null)
throw new IllegalStateException("expected context operator for literal");
// Match the current property to a user defined
// row key token, if match we can add a row filter.
if (this.rowKeyFac.hasUserDefinedRowKeyToken(this.rootType, this.contextPropertyPath)) {
KeyValue pair = new KeyValue(this.contextProperty, content);
pair.setPropertyPath(this.contextPropertyPath);
if (this.contextOpWildcard) pair.setIsWildcard(true);
// FIXME: can't several of these be lumped together if in the same AND expression parent??
List<KeyValue> pairs = new ArrayList<KeyValue>();
pairs.add(pair);
String rowKeyExpr = this.rowKeyFac.createRowKeyExpr(pairs);
WritableByteArrayComparable exprComp = new RegexStringComparator(rowKeyExpr);
Filter rowFilter = new RowFilter(this.contextHBaseCompareOp, exprComp);
FilterList top = this.filterStack.peek();
top.addFilter(rowFilter);
if (log.isDebugEnabled())
log.debug("created row filter: " + rowKeyExpr + " operator: " + this.contextHBaseCompareOp);
} else
throw new GraphFilterException(
"no user defined row-key token for query path '" + this.contextPropertyPath + "'");
super.start(literal);
}
@Test
public void scan_by_prefix_date() throws IOException {
FilterList fl = new FilterList();
Filter filter =
new RowFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator("20150903"));
fl.addFilter(filter);
Scan scan = new Scan();
scan.setFilter(fl);
long t1 = System.currentTimeMillis();
ResultScanner rs = errorTable.getScanner(scan);
Result result;
int count = 0;
while ((result = rs.next()) != null) {
System.out.println("rowkey=" + new String(result.getRow()));
System.out.println(
"value=" + new String(result.getValue(fBytes, Bytes.toBytes("stacktrace"))));
System.out.println();
count++;
}
long t2 = System.currentTimeMillis();
System.out.println("count=" + count + ",t2 - t1=" + ((t2 - t1) / 1000));
}
/**
* Process a {@link org.plasma.query.model.LogicalOperator logical operator} query traversal start
* event. If the {@link FilterList filter list} on the top of the filter stack is not an 'OR'
* filter, since it's immutable and we cannot modify its operator, create an 'OR' filter and swaps
* out the existing filters into the new 'OR' {@link FilterList filter list}.
*/
public void start(LogicalOperator operator) {
switch (operator.getValue()) {
case AND:
break; // default filter list oper is must-pass-all (AND)
case OR:
FilterList top = this.filterStack.peek();
if (top.getOperator().ordinal() != FilterList.Operator.MUST_PASS_ONE.ordinal()) {
FilterList orList = new FilterList(FilterList.Operator.MUST_PASS_ONE);
for (Filter filter : top.getFilters()) orList.addFilter(filter);
top.getFilters().clear();
this.filterStack.pop();
FilterList previous = this.filterStack.peek();
if (!previous.getFilters().remove(top))
throw new IllegalStateException("could not remove filter list");
previous.addFilter(orList);
this.filterStack.push(orList);
}
break;
}
super.start(operator);
}
@Test
public void testParsedFilter() {
String q1 = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @field3 = 100000";
try {
FilterList filterList = (FilterList) buildFilter(q1);
Assert.assertEquals(FilterList.Operator.MUST_PASS_ONE, filterList.getOperator());
Assert.assertEquals(1, filterList.getFilters().size());
Assert.assertEquals(2, ((FilterList) filterList.getFilters().get(0)).getFilters().size());
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
}
String q2 =
"@cluster = \"cluster1\" and @datacenter = \"dc1\" and ( @field3 = 100000 or @field3 < 100000)";
try {
FilterList filterList = (FilterList) buildFilter(q2);
Assert.assertEquals(FilterList.Operator.MUST_PASS_ONE, filterList.getOperator());
Assert.assertEquals(2, filterList.getFilters().size());
Assert.assertEquals(2, ((FilterList) filterList.getFilters().get(0)).getFilters().size());
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
}
// Test parse success but bad type of value
String q3 =
"@cluster = \"cluster1\" and @datacenter = \"dc1\" and ( @field3 = 100000 or @field3 < \"bad_int_100000\")";
boolean q3Ex = false;
try {
Assert.assertNull(buildFilter(q3));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (IllegalArgumentException e) {
LOG.debug("Expect: ", e);
Assert.assertTrue(e.getCause() instanceof NumberFormatException);
q3Ex = true;
}
Assert.assertTrue(q3Ex);
}
public Scan intersectScan(
Scan scan,
final byte[] originalStartKey,
final byte[] originalStopKey,
final int keyOffset,
boolean crossesRegionBoundary) {
byte[] startKey = originalStartKey;
byte[] stopKey = originalStopKey;
if (stopKey.length > 0 && Bytes.compareTo(startKey, stopKey) >= 0) {
return null;
}
boolean mayHaveRows = false;
// Keep the keys as they are if we have a point lookup, as we've already resolved the
// salt bytes in that case.
final int scanKeyOffset =
this.isSalted && !this.isPointLookup ? SaltingUtil.NUM_SALTING_BYTES : 0;
assert (scanKeyOffset == 0 || keyOffset == 0);
// Total offset for startKey/stopKey. Either 1 for salted tables or the prefix length
// of the current region for local indexes. We'll never have a case where a table is
// both salted and local.
final int totalKeyOffset = scanKeyOffset + keyOffset;
byte[] prefixBytes = ByteUtil.EMPTY_BYTE_ARRAY;
if (totalKeyOffset > 0) {
prefixBytes = ScanUtil.getPrefix(startKey, totalKeyOffset);
/*
* If our startKey to stopKey crosses a region boundary consider everything after the startKey as our scan
* is always done within a single region. This prevents us from having to prefix the key prior to knowing
* whether or not there may be an intersection. We can't calculate whether or not we've crossed a region
* boundary for local indexes, because we don't know the key offset of the next region, but only for the
* current one (which is the one passed in). If the next prefix happened to be a subset of the previous
* prefix, then this wouldn't detect that we crossed a region boundary.
*/
if (crossesRegionBoundary) {
stopKey = ByteUtil.EMPTY_BYTE_ARRAY;
}
}
int scanStartKeyOffset = scanKeyOffset;
byte[] scanStartKey = scan == null ? ByteUtil.EMPTY_BYTE_ARRAY : scan.getStartRow();
// Compare ignoring key prefix and salt byte
if (scanStartKey.length > 0) {
if (startKey.length > 0
&& Bytes.compareTo(
scanStartKey,
scanKeyOffset,
scanStartKey.length - scanKeyOffset,
startKey,
totalKeyOffset,
startKey.length - totalKeyOffset)
< 0) {
scanStartKey = startKey;
scanStartKeyOffset = totalKeyOffset;
}
} else {
scanStartKey = startKey;
scanStartKeyOffset = totalKeyOffset;
mayHaveRows = true;
}
int scanStopKeyOffset = scanKeyOffset;
byte[] scanStopKey = scan == null ? ByteUtil.EMPTY_BYTE_ARRAY : scan.getStopRow();
if (scanStopKey.length > 0) {
if (stopKey.length > 0
&& Bytes.compareTo(
scanStopKey,
scanKeyOffset,
scanStopKey.length - scanKeyOffset,
stopKey,
totalKeyOffset,
stopKey.length - totalKeyOffset)
> 0) {
scanStopKey = stopKey;
scanStopKeyOffset = totalKeyOffset;
}
} else {
scanStopKey = stopKey;
scanStopKeyOffset = totalKeyOffset;
mayHaveRows = true;
}
mayHaveRows =
mayHaveRows
|| Bytes.compareTo(
scanStartKey,
scanStartKeyOffset,
scanStartKey.length - scanStartKeyOffset,
scanStopKey,
scanStopKeyOffset,
scanStopKey.length - scanStopKeyOffset)
< 0;
if (!mayHaveRows) {
return null;
}
if (originalStopKey.length != 0 && scanStopKey.length == 0) {
scanStopKey = originalStopKey;
}
Filter newFilter = null;
// If the scan is using skip scan filter, intersect and replace the filter.
if (scan == null || this.useSkipScanFilter()) {
byte[] skipScanStartKey = scanStartKey;
byte[] skipScanStopKey = scanStopKey;
// If we have a keyOffset and we've used the startKey/stopKey that
// were passed in (which have the prefix) for the above range check,
// we need to remove the prefix before running our intersect method.
// TODO: we could use skipScanFilter.setOffset(keyOffset) if both
// the startKey and stopKey were used above *and* our intersect
// method honored the skipScanFilter.offset variable.
if (scanKeyOffset > 0) {
if (skipScanStartKey != originalStartKey) { // original already has correct salt byte
skipScanStartKey = replaceSaltByte(skipScanStartKey, prefixBytes);
}
if (skipScanStopKey != originalStopKey) {
skipScanStopKey = replaceSaltByte(skipScanStopKey, prefixBytes);
}
} else if (keyOffset > 0) {
if (skipScanStartKey == originalStartKey) {
skipScanStartKey = stripPrefix(skipScanStartKey, keyOffset);
}
if (skipScanStopKey == originalStopKey) {
skipScanStopKey = stripPrefix(skipScanStopKey, keyOffset);
}
}
if (scan == null) {
return filter.hasIntersect(skipScanStartKey, skipScanStopKey) ? HAS_INTERSECTION : null;
}
Filter filter = scan.getFilter();
SkipScanFilter newSkipScanFilter = null;
if (filter instanceof SkipScanFilter) {
SkipScanFilter oldSkipScanFilter = (SkipScanFilter) filter;
newFilter =
newSkipScanFilter = oldSkipScanFilter.intersect(skipScanStartKey, skipScanStopKey);
if (newFilter == null) {
return null;
}
} else if (filter instanceof FilterList) {
FilterList oldList = (FilterList) filter;
FilterList newList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
newFilter = newList;
for (Filter f : oldList.getFilters()) {
if (f instanceof SkipScanFilter) {
newSkipScanFilter = ((SkipScanFilter) f).intersect(skipScanStartKey, skipScanStopKey);
if (newSkipScanFilter == null) {
return null;
}
newList.addFilter(newSkipScanFilter);
} else {
newList.addFilter(f);
}
}
}
// TODO: it seems that our SkipScanFilter or HBase runs into problems if we don't
// have an enclosing range when we do a point lookup.
if (isPointLookup) {
scanStartKey = ScanUtil.getMinKey(schema, newSkipScanFilter.getSlots(), slotSpan);
scanStopKey = ScanUtil.getMaxKey(schema, newSkipScanFilter.getSlots(), slotSpan);
}
}
if (newFilter == null) {
newFilter = scan.getFilter();
}
Scan newScan = ScanUtil.newScan(scan);
newScan.setFilter(newFilter);
// If we have an offset (salted table or local index), we need to make sure to
// prefix our scan start/stop row by the prefix of the startKey or stopKey that
// were passed in. Our scan either doesn't have the prefix or has a placeholder
// for it.
if (totalKeyOffset > 0) {
if (scanStartKey != originalStartKey) {
scanStartKey = prefixKey(scanStartKey, scanKeyOffset, prefixBytes, keyOffset);
}
if (scanStopKey != originalStopKey) {
scanStopKey = prefixKey(scanStopKey, scanKeyOffset, prefixBytes, keyOffset);
}
}
// Don't let the stopRow of the scan go beyond the originalStopKey
if (originalStopKey.length > 0 && Bytes.compareTo(scanStopKey, originalStopKey) > 0) {
scanStopKey = originalStopKey;
}
if (scanStopKey.length > 0 && Bytes.compareTo(scanStartKey, scanStopKey) >= 0) {
return null;
}
newScan.setAttribute(SCAN_ACTUAL_START_ROW, scanStartKey);
newScan.setStartRow(scanStartKey);
newScan.setStopRow(scanStopKey);
if (keyOffset > 0) {
newScan.setAttribute(STARTKEY_OFFSET, Bytes.toBytes(keyOffset));
}
return newScan;
}
private ResultScanner createHBaseResultScanner(RecordScan scan)
throws RepositoryException, InterruptedException {
Scan hbaseScan = new Scan();
hbaseScan.setMaxVersions(1);
if (scan.getRawStartRecordId() != null) {
hbaseScan.setStartRow(scan.getRawStartRecordId());
} else if (scan.getStartRecordId() != null) {
hbaseScan.setStartRow(scan.getStartRecordId().toBytes());
}
if (scan.getRawStopRecordId() != null) {
hbaseScan.setStopRow(scan.getRawStopRecordId());
} else if (scan.getStopRecordId() != null) {
hbaseScan.setStopRow(scan.getStopRecordId().toBytes());
}
// Filters
FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
// filter out deleted records
filterList.addFilter(REAL_RECORDS_FILTER);
// add user's filter
if (scan.getRecordFilter() != null) {
Filter filter = filterFactory.createHBaseFilter(scan.getRecordFilter(), this, filterFactory);
filterList.addFilter(filter);
}
hbaseScan.setFilter(filterList);
hbaseScan.setCaching(scan.getCaching());
hbaseScan.setCacheBlocks(scan.getCacheBlocks());
ReturnFields returnFields = scan.getReturnFields();
if (returnFields != null && returnFields.getType() != ReturnFields.Type.ALL) {
RecordDecoder.addSystemColumnsToScan(hbaseScan);
switch (returnFields.getType()) {
case ENUM:
for (QName field : returnFields.getFields()) {
FieldTypeImpl fieldType = (FieldTypeImpl) typeManager.getFieldTypeByName(field);
hbaseScan.addColumn(RecordCf.DATA.bytes, fieldType.getQualifier());
}
break;
case NONE:
// nothing to add
break;
default:
throw new RuntimeException("Unrecognized ReturnFields type: " + returnFields.getType());
}
} else {
hbaseScan.addFamily(RecordCf.DATA.bytes);
}
ResultScanner hbaseScanner;
try {
hbaseScanner = recordTable.getScanner(hbaseScan);
} catch (IOException e) {
throw new RecordException("Error creating scanner", e);
}
return hbaseScanner;
}
@Test
public void testWithUnescapedString() {
///////////////////////////////////
// Tag filter with IN or EQUAL
// Should use RowKeyFilter only
///////////////////////////////////
String query = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @jobID = \"job.1234\"";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertFalse(
"Should use rowkey filter only", filter.toString().matches(".*job.1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
Assert.fail(ex.getMessage());
}
query = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @jobID in (\"job_1234\")";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertFalse(
"Should use rowkey filter only", filter.toString().matches(".*job_1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
Assert.fail(ex.getMessage());
}
query = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @jobID in (\"job.1234\")";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertFalse(
"Should use rowkey filter only", filter.toString().matches(".*job.*1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
Assert.fail(ex.getMessage());
}
///////////////////////////////
// Tag with other operators
///////////////////////////////
query = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @jobID =~ \"job_1234\"";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertTrue(filter.toString().matches(".*job_1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
Assert.fail(ex.getMessage());
}
query = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @jobID =~ \"job.1234\"";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertTrue(filter.toString().matches(".*job.1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
Assert.fail(ex.getMessage());
}
///////////////////////////////
// Tag with IN
// Should escape regexp chars
///////////////////////////////
query = "@cluster = \"cluster1\" and @datacenter = \"dc1\" and @field7 = \"job_1234\"";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertTrue(filter.toString().matches(".*job_1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
ex.printStackTrace();
Assert.fail(ex.getMessage());
}
query =
"@cluster = \"cluster1\" and @datacenter = \"dc1\" and @field7 in (\"job.1234\",\"others\")";
try {
FilterList filter = (FilterList) buildFilter(query);
Assert.assertEquals(
RowFilter.class,
((FilterList) filter.getFilters().get(0)).getFilters().get(0).getClass());
Assert.assertTrue(filter.toString().matches(".*job\\.1234.*"));
} catch (EagleQueryParseException e) {
Assert.fail(e.getMessage());
} catch (Exception ex) {
Assert.fail(ex.getMessage());
}
}
public GCResult getBinFor(String chr, int gcContent) throws IOException {
log.debug("Get GC bin: " + chr + " " + gcContent);
FilterList filters = new FilterList(FilterList.Operator.MUST_PASS_ALL);
filters.addFilter(
new SingleColumnValueFilter(
Bytes.toBytes("chr"),
Bytes.toBytes("name"),
CompareFilter.CompareOp.EQUAL,
Bytes.toBytes(chr)));
filters.addFilter(
new SingleColumnValueFilter(
Bytes.toBytes("gc"),
Bytes.toBytes("min"),
CompareFilter.CompareOp.LESS_OR_EQUAL,
Bytes.toBytes(gcContent)));
filters.addFilter(
new SingleColumnValueFilter(
Bytes.toBytes("gc"),
Bytes.toBytes("max"),
CompareFilter.CompareOp.GREATER_OR_EQUAL,
Bytes.toBytes(gcContent)));
Scan scan = new Scan();
scan.setFilter(filters);
ResultScanner scanner = this.getScanner(scan);
Iterator<Result> rI = scanner.iterator();
if (!rI.hasNext() && gcContent > 0) {
// it's possible that I've hit the max, might be a smarter way to do this with filters but I
// can't think of one right now
filters = new FilterList(FilterList.Operator.MUST_PASS_ALL);
filters.addFilter(
new SingleColumnValueFilter(
Bytes.toBytes("chr"),
Bytes.toBytes("name"),
CompareFilter.CompareOp.EQUAL,
Bytes.toBytes(chr)));
filters.addFilter(
new SingleColumnValueFilter(
Bytes.toBytes("gc"),
Bytes.toBytes("max"),
CompareFilter.CompareOp.GREATER_OR_EQUAL,
Bytes.toBytes(gcContent)));
scan = new Scan();
scan.setFilter(filters);
scanner = this.getScanner(scan);
rI = scanner.iterator();
if (!rI.hasNext()) log.warn("No GC bin for " + chr + " " + gcContent);
}
if (!rI.hasNext()) {
throw new IOException("Failed to retrieve any GC bins for chr " + chr + " GC=" + gcContent);
}
// only expect one result
GCResult gcResult = createResult(rI.next());
if (rI.hasNext())
log.warn(
"Found multiple matches for " + chr + " " + gcContent + " returning only the first.");
scanner.close();
return gcResult;
}
/**
* 查询一张表中所有记录 分页
*
* @param tableName
* @return
* @throws ParamIsNullException 参数为空
*/
public static PaginationResult<List<Result>> queryTableByPagination(
String tableName, Pagination pagination) throws ParamIsNullException {
if (null == tableName) {
throw new ParamIsNullException("tableName不能为空");
}
Connection conn = null;
HTable table = null;
ResultScanner scann = null;
PaginationResult<List<Result>> result = new PaginationResult<List<Result>>();
List<Result> resultList = new ArrayList<Result>();
int currentPage = 1;
try {
conn = ConnectionFactory.createConnection(conf);
table = (HTable) conn.getTable(TableName.valueOf(tableName));
int pagesize = 10;
Scan scan = new Scan();
if (null != pagination) {
pagesize = pagination.getPagesize();
if (null != pagination.getNextPageRowKey() && pagination.getNextPageRowKey().length > 0) {
scan.setStartRow(pagination.getNextPageRowKey());
}
currentPage = pagination.getCurrentPage();
}
// MUST_PASS_ALL(条件 AND) MUST_PASS_ONE（条件OR）
FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
Filter filter = new PageFilter(pagesize);
filterList.addFilter(filter);
scan.setFilter(filterList);
scann = table.getScanner(scan);
for (Result rs : scann) {
resultList.add(rs);
}
/** 设置Pagination */
Pagination page = new Pagination();
Result row = resultList.get(resultList.size() - 1 > -1 ? resultList.size() - 1 : 0);
page.setNextPageRowKey(row.getRow());
page.setPagesize(pagesize);
page.setTotalRows(
null == HBaseUtil.getRowCount(tableName)
? 0
: HBaseUtil.getRowCount(tableName).intValue());
page.setCurrentPage(currentPage);
result.setR(resultList);
result.setPagination(page);
} catch (Exception e) {
logger.error("获取Hbase连接发生异常, errMsg:{}", e.getMessage());
} finally {
if (null != scann) {
scann.close();
}
if (null != table) {
try {
table.close();
} catch (IOException e) {
logger.error("HTable close exception, errMsg:{}", e.getMessage());
}
}
if (null != conn) {
try {
conn.close();
} catch (IOException e) {
logger.error("Connection close exception, errMsg:{}", e.getMessage());
}
}
}
return result;
}
@Override
public Scan getRawScan(ItemData d, Map<String, HCompareOp> ops) {
int startShopID = 0;
int startItemID = 0;
int endShopID = MAX_SHOP_ID;
int endItemID = MAX_ITEM_ID;
// some performance improvement
// shop_id指定
HCompareOp shopIDOp = ops.get("shop_id");
if (shopIDOp == HCompareOp.EQUAL) {
startShopID = d.shopID;
endShopID = startShopID;
}
// item idも指定
HCompareOp itemIDOp = ops.get("item_id");
if (itemIDOp == HCompareOp.EQUAL) {
startItemID = d.itemID;
endItemID = startItemID;
}
log.info(String.format("scan start row, shop_id=%d, item_id=%d", startShopID, startItemID));
log.info(String.format("scan stop row, shop_id=%d, item_id=%d", endShopID, endItemID));
byte[] startRow = encodeRowkey(startShopID, startItemID);
byte[] endRow = encodeRowkey(endShopID, endItemID);
Scan s = new Scan(startRow, endRow);
s.addFamily(DATA_FAMILY);
s.addFamily(META_FAMILY);
s.setCacheBlocks(false);
s.setMaxVersions();
s.setCaching(DEFAULT_SCAN_CACHE);
FilterList fl = new FilterList();
for (String column : ops.keySet()) {
byte[] value;
byte[] family = DATA_FAMILY;
if ("ctime".equals(column)) {
value = Bytes.toBytes(d.ctime);
family = META_FAMILY;
} else if ("shop_id".equals(column)) {
value = Bytes.toBytes(d.shopID);
} else if ("item_id".equals(column)) {
value = Bytes.toBytes(d.itemID);
} else if ("genre_id".equals(column)) {
value = Bytes.toBytes(d.genreID);
} else if ("price".equals(column)) {
value = Bytes.toBytes(d.price);
} else if ("full_item_url".equals(column)) {
value = Bytes.toBytes(d.fullItemUrl);
} else if ("item_name".equals(column)) {
value = Bytes.toBytes(d.itemName);
} else {
// ignore
continue;
}
byte[] qualifier = Bytes.toBytes(column);
HCompareOp hop = ops.get(column);
CompareOp op = HClient.toCompareOp(hop);
SingleColumnValueFilter filter = new SingleColumnValueFilter(family, qualifier, op, value);
filter.setFilterIfMissing(true);
fl.addFilter(filter);
}
s.setFilter(fl);
return s;
}
public List<Point2D.Double> debugColumnVersion(
String timestamp, double latitude, double longitude, double radius) {
this.getStatLog(this.STAT_FILE_NAME);
long sTime = System.currentTimeMillis();
// build up a raster
XRaster raster = new XRaster(this.space, this.min_size_of_height, this.max_num_of_column);
Point2D.Double point = new Point2D.Double(latitude, longitude);
ResultScanner rScanner = null;
// return result
HashMap<String, String> results = new HashMap<String, String>();
ArrayList<Point2D.Double> returnPoints = new ArrayList<Point2D.Double>();
try {
// match rect to find the subspace it belongs to
XBox[] match_boxes = raster.match(latitude, longitude, radius);
String[] rowRange = new String[2];
rowRange[0] = match_boxes[0].getRow();
rowRange[1] = match_boxes[1].getRow() + "0";
String[] c = raster.getColumns(match_boxes[0], match_boxes[1]);
// the version here is harded coded, because i cannot get how many
// objects in one cell now
FilterList fList = new FilterList();
fList.addFilter(this.hbaseUtil.getInclusiveFilter(rowRange[1]));
rScanner = this.hbaseUtil.getResultSet(rowRange, fList, this.familyName, c, 1000000);
BixiReader reader = new BixiReader();
int count = 0;
int accepted = 0;
int max_column = 0;
int min_column = 10000;
int max_version = 0;
int min_version = 10000;
int row_count = 0;
int byte_lenght = 0;
for (Result r : rScanner) {
byte_lenght = r.getBytes().getLength();
row_count++;
NavigableMap<byte[], NavigableMap<byte[], NavigableMap<Long, byte[]>>> resultMap =
r.getMap();
int count_column = 0;
for (byte[] family : resultMap.keySet()) {
NavigableMap<byte[], NavigableMap<Long, byte[]>> columns = resultMap.get(family);
count_column = 0;
for (byte[] col : columns.keySet()) {
NavigableMap<Long, byte[]> values = columns.get(col);
count_column++;
if (values.values().size() > max_version) {
max_version = values.values().size();
}
if (values.values().size() < min_version) {
min_version = values.values().size();
}
for (Long version : values.keySet()) {
count++;
// get the distance between this point and the given
// point
XStation station = reader.getStationFromJson(Bytes.toString(values.get(version)));
Point2D.Double resPoint =
new Point2D.Double(station.getLatitude(), station.getlongitude());
double distance = resPoint.distance(point);
if (Bytes.toString(col).equals("0011")) {
/* System.out.println("!!!! key=>"+Bytes.toString(r.getRow())+
";column=>"+Bytes.toString(col)+
";version=>"+version+
";point=>"+resPoint.toString());*/
}
if (distance <= radius) {
returnPoints.add(resPoint);
// System.out.println("row=>"+Bytes.toString(r.getRow())
// +
// ";colum=>"+Bytes.toString(col)+";version=>"+version+
// ";station=>"+station.getId()+";distance=>"+distance);
accepted++;
results.put(station.getId(), String.valueOf(distance));
}
}
}
if (count_column > max_column) max_column = count_column;
if (count_column < min_column) min_column = count_column;
}
}
System.out.println("byte_length=>" + byte_lenght + ";row_count=>" + row_count);
System.out.println(
"max_column=>"
+ max_column
+ ";min_column=>"
+ min_column
+ ";max_version=>"
+ max_version
+ ";min_version=>"
+ min_version);
long eTime = System.currentTimeMillis();
System.out.println(
"count=>" + count + ";accepted=>" + accepted + ";time=>" + (eTime - sTime));
String outStr =
"radius=>"
+ radius
+ ";count=>"
+ count
+ ";accepted=>"
+ accepted
+ ";time=>"
+ (eTime - sTime)
+ ";row_stride=>"
+ this.min_size_of_height
+ ";columns=>"
+ this.max_num_of_column;
this.writeStat(outStr);
} catch (Exception e) {
e.printStackTrace();
} finally {
this.hbaseUtil.closeTableHandler();
this.closeStatLog();
}
return returnPoints;
}
public static boolean intersectScanRange(
Scan scan, byte[] startKey, byte[] stopKey, boolean useSkipScan) {
boolean mayHaveRows = false;
int offset = 0;
if (ScanUtil.isLocalIndex(scan)) {
offset = startKey.length != 0 ? startKey.length : stopKey.length;
}
byte[] existingStartKey = scan.getStartRow();
byte[] existingStopKey = scan.getStopRow();
if (existingStartKey.length > 0) {
if (startKey.length == 0 || Bytes.compareTo(existingStartKey, startKey) > 0) {
startKey = existingStartKey;
}
} else {
mayHaveRows = true;
}
if (existingStopKey.length > 0) {
if (stopKey.length == 0 || Bytes.compareTo(existingStopKey, stopKey) < 0) {
stopKey = existingStopKey;
}
} else {
mayHaveRows = true;
}
scan.setStartRow(startKey);
scan.setStopRow(stopKey);
if (offset > 0 && useSkipScan) {
byte[] temp = null;
if (startKey.length != 0) {
temp = new byte[startKey.length - offset];
System.arraycopy(startKey, offset, temp, 0, startKey.length - offset);
startKey = temp;
}
if (stopKey.length != 0) {
temp = new byte[stopKey.length - offset];
System.arraycopy(stopKey, offset, temp, 0, stopKey.length - offset);
stopKey = temp;
}
}
mayHaveRows = mayHaveRows || Bytes.compareTo(scan.getStartRow(), scan.getStopRow()) < 0;
// If the scan is using skip scan filter, intersect and replace the filter.
if (mayHaveRows && useSkipScan) {
Filter filter = scan.getFilter();
if (filter instanceof SkipScanFilter) {
SkipScanFilter oldFilter = (SkipScanFilter) filter;
SkipScanFilter newFilter = oldFilter.intersect(startKey, stopKey);
if (newFilter == null) {
return false;
}
// Intersect found: replace skip scan with intersected one
scan.setFilter(newFilter);
} else if (filter instanceof FilterList) {
FilterList oldList = (FilterList) filter;
FilterList newList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
for (Filter f : oldList.getFilters()) {
if (f instanceof SkipScanFilter) {
SkipScanFilter newFilter = ((SkipScanFilter) f).intersect(startKey, stopKey);
if (newFilter == null) {
return false;
}
newList.addFilter(newFilter);
} else {
newList.addFilter(f);
}
}
scan.setFilter(newList);
}
}
return mayHaveRows;
}
