public void testSkewedJoinWithNoProperties() throws IOException {
pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
pigServer.registerQuery("A = LOAD '" + INPUT_FILE1 + "' as (id, name, n);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (id, name);");
try {
DataBag dbfrj = BagFactory.getInstance().newDefaultBag();
DataBag dbshj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery(
"C = join A by (id, name), B by (id, name) using \"skewed\" parallel 5;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("E = join A by(id, name), B by (id, name);");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
Assert.assertTrue(dbfrj.size() > 0 && dbshj.size() > 0);
Assert.assertEquals(true, TestHelper.compareBags(dbfrj, dbshj));
} catch (Exception e) {
fail(e.getMessage());
}
}
@Override
public DataBag exec(Tuple input) throws IOException {
try {
DataBag bag = DefaultBagFactory.getInstance().newDefaultBag();
if (input == null || input.size() == 0) {
return bag; // an empty bag
}
if (this.fieldType == DataType.MAP) {
Tuple t = DefaultTupleFactory.getInstance().newTuple(1);
t.set(0, createMap(input));
bag.add(t);
} else {
bag.add(input);
}
return bag;
} catch (Exception e) {
throw new RuntimeException(
"Error while computing size in " + this.getClass().getSimpleName());
}
}
@Override
public Tuple exec(Tuple input) throws IOException {
Tuple output = tupleFactory.newTuple();
DataBag selected = bagFactory.newDefaultBag();
DataBag waiting = bagFactory.newSortedBag(new ScoredTupleComparator());
DataBag items = (DataBag) input.get(0);
if (items != null) {
long n = items.size();
double q1 = getQ1(n, _samplingProbability);
double q2 = getQ2(n, _samplingProbability);
for (Tuple item : items) {
double key = _rdg.nextUniform(0.0d, 1.0d);
if (key < q1) {
selected.add(item);
} else if (key < q2) {
waiting.add(new ScoredTuple(key, item).getIntermediateTuple(tupleFactory));
}
}
output.append(n);
output.append(selected);
output.append(waiting);
}
return output;
}
// pig 1048
public void testSkewedJoinOneValue() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE3 + "' as (id,name);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE3 + "' as (id,name);");
// Filter key with a single value
pigServer.registerQuery("C = FILTER A by id == 400;");
pigServer.registerQuery("D = FILTER B by id == 400;");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(),
dbrj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery("E = join C by id, D by id using \"skewed\";");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("E = join C by id, D by id;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbrj.add(iter.next());
}
}
Assert.assertEquals(dbfrj.size(), dbrj.size());
Assert.assertEquals(true, TestHelper.compareBags(dbfrj, dbrj));
}
@Override
public Tuple exec(Tuple input) throws IOException {
DataBag output = BagFactory.getInstance().newDefaultBag();
DataBag samples = (DataBag) input.get(0);
if (samples == null) {
// do nothing
} else if (samples.size() <= numSamples) {
// no need to construct a reservoir, so just emit intermediate tuples
for (Tuple sample : samples) {
// add the score on to the intermediate tuple
output.add(new ScoredTuple(Math.random(), sample).getIntermediateTuple(tupleFactory));
}
} else {
for (Tuple sample : samples) {
getReservoir().consider(new ScoredTuple(Math.random(), sample));
}
for (ScoredTuple scoredTuple : getReservoir()) {
// add the score on to the intermediate tuple
output.add(scoredTuple.getIntermediateTuple(tupleFactory));
}
}
return tupleFactory.newTuple(output);
}
public void testSkewedJoinWithGroup() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE1 + "' as (id, name, n);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (id, name);");
pigServer.registerQuery("C = GROUP A by id;");
pigServer.registerQuery("D = GROUP B by id;");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(),
dbshj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery("E = join C by group, D by group using \"skewed\" parallel 5;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("E = join C by group, D by group;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
Assert.assertTrue(dbfrj.size() > 0 && dbshj.size() > 0);
Assert.assertEquals(true, TestHelper.compareBags(dbfrj, dbshj));
}
public void testSkewedJoinManyReducers() throws IOException {
pigServer.getPigContext().getProperties().setProperty("pig.skewedjoin.reduce.maxtuple", "2");
pigServer.registerQuery("A = LOAD '" + INPUT_FILE6 + "' as (id,name);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE7 + "' as (id,name);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(),
dbrj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery("E = join A by id, B by id using \"skewed\" parallel 300;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("E = join A by id, B by id;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbrj.add(iter.next());
}
}
Assert.assertEquals(dbfrj.size(), dbrj.size());
Assert.assertEquals(true, TestHelper.compareBags(dbfrj, dbrj));
}
public DataBag exec(Tuple input) throws IOException {
try {
if (!input.isNull()) {
// Create the output like a databag {(res1,res2),(res3,res4)..}
DataBag output_databag = mBagFactory.newDefaultBag();
// Unpack tuple in order to get the bag {(1,2),(3,4),...}
String input_time = (String) input.get(0);
try {
DateFormat formatter = new SimpleDateFormat("MM/dd/yyyy kk:mm:ss");
Date date =
formatter.parse(
String.format(
"%s/%s/%s %s:%s:%s",
input_time.substring(5, 7),
input_time.substring(8, 10),
input_time.substring(0, 4),
input_time.substring(11, 13),
input_time.substring(14, 16),
input_time.substring(17, 18)));
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
int hour = calendar.get(Calendar.HOUR_OF_DAY);
// Add items to output
Tuple items = TupleFactory.getInstance().newTuple(1);
items.set(0, String.format("%d:%d:%d", dayOfWeek, dayOfMonth, hour));
output_databag.add(items);
} catch (Exception e) {
Tuple items = TupleFactory.getInstance().newTuple(1);
items.set(0, "petting #1" + e.getMessage());
output_databag.add(items);
return output_databag;
}
return output_databag;
} else {
DataBag output_databag = mBagFactory.newDefaultBag();
Tuple items = TupleFactory.getInstance().newTuple(1);
items.set(0, "petting #2");
output_databag.add(items);
return output_databag;
}
} catch (Exception e) {
System.err.println("Error with ?? ..");
DataBag output_databag = mBagFactory.newDefaultBag();
Tuple items = TupleFactory.getInstance().newTuple(1);
items.set(0, "petting #3" + e.getMessage());
output_databag.add(items);
return output_databag;
}
}
private DataBag consumeBag(PushbackInputStream in, ResourceFieldSchema fieldSchema)
throws IOException {
if (fieldSchema == null) {
throw new IOException("Schema is null");
}
ResourceFieldSchema[] fss = fieldSchema.getSchema().getFields();
Tuple t;
int buf;
while ((buf = in.read()) != '{') {
if (buf == -1) {
throw new IOException("Unexpect end of bag");
}
}
if (fss.length != 1) throw new IOException("Only tuple is allowed inside bag schema");
ResourceFieldSchema fs = fss[0];
DataBag db = DefaultBagFactory.getInstance().newDefaultBag();
while (true) {
t = consumeTuple(in, fs);
if (t != null) db.add(t);
while ((buf = in.read()) != '}' && buf != ',') {
if (buf == -1) {
throw new IOException("Unexpect end of bag");
}
}
if (buf == '}') break;
}
return db;
}
@Override
public DataBag exec(Tuple input) throws IOException {
DataBag bag = (DataBag) input.get(0);
HashMap<String, Double> clsCnt = new HashMap<String, Double>();
Iterator<Tuple> it = bag.iterator();
Double sum = new Double(0.0);
while (it.hasNext()) {
Tuple item = (Tuple) it.next();
String cls = (String) item.get(3);
if (cls != null && cls.length() > 0) {
Double cur = clsCnt.get(cls);
Double inc = (Double) item.get(2);
if (cur != null) {
clsCnt.put(cls, cur + inc);
} else {
clsCnt.put(cls, inc);
}
sum += inc;
}
}
Set<Entry<String, Double>> clses = clsCnt.entrySet();
Iterator<Entry<String, Double>> cit = clses.iterator();
DataBag result = bagFactory.newDefaultBag();
while (cit.hasNext()) {
Entry<String, Double> cls = cit.next();
Tuple tpl = tupleFactory.newTuple(2);
tpl.set(0, cls.getKey());
tpl.set(1, cls.getValue() / sum);
result.add(tpl);
}
return result;
}
public DataBag exec(Tuple input) throws IOException {
if (input == null || input.size() == 0) {
return null;
}
String normStr = ((String) input.get(0));
if (normStr == null) {
return null;
}
// Remove punctuation except when it's a version number
normStr = punctPattern.matcher(normStr.trim().toLowerCase()).replaceAll(" ");
normStr = spacePattern.matcher(normStr).replaceAll(" ");
DataBag output = bagFactory.newDefaultBag();
for (String s : spacePattern.split(normStr.trim())) {
if (s.length() <= 30) {
Tuple t = tupleFactory.newTuple(1);
t.set(0, s);
output.add(t);
}
}
return output;
}
@Override
public DataBag exec(Tuple input) throws IOException {
DataBag bag = (DataBag) input.get(0);
long n = 0L;
DataBag selected = bagFactory.newDefaultBag();
DataBag waiting = bagFactory.newSortedBag(new ScoredTupleComparator());
for (Tuple innerTuple : bag) {
n += (Long) innerTuple.get(0);
selected.addAll((DataBag) innerTuple.get(1));
waiting.addAll((DataBag) innerTuple.get(2));
}
long sampleSize = (long) Math.ceil(_samplingProbability * n);
long nNeeded = sampleSize - selected.size();
for (Tuple scored : waiting) {
if (nNeeded <= 0) {
break;
}
selected.add(ScoredTuple.fromIntermediateTuple(scored).getTuple());
nNeeded--;
}
return selected;
}
@Test
public void testCase1() throws IOException {
Tuple input = TupleFactory.getInstance().newTuple(2);
Tuple groupInfo = TupleFactory.getInstance().newTuple(2);
groupInfo.set(0, "column_3");
groupInfo.set(1, Integer.valueOf(1));
DataBag dataBag = new DefaultDataBag();
// {(PSIColumn: int, columnId: int, value: chararray, tag: boolean , rand: int)}
for (int i = 0; i < 10; i++) {
Tuple t = TupleFactory.getInstance().newTuple(4);
t.set(0, Integer.valueOf(1));
t.set(1, Integer.valueOf(1));
t.set(2, array[i]);
dataBag.add(t);
}
input.set(0, groupInfo);
input.set(1, dataBag);
Tuple output = inst.exec(input);
Assert.assertEquals(output.get(0), 1);
String[] outputArray =
output.get(1).toString().split(String.valueOf(CalculateStatsUDF.CATEGORY_VAL_SEPARATOR));
Assert.assertEquals(outputArray[0], "1");
Assert.assertEquals(outputArray[1], "2");
Assert.assertEquals(outputArray[2], "0");
}
@Override
public DataBag extract(Object o, String lang) {
DocumentMetadata dm = (DocumentMetadata) o;
DataBag db = new DefaultDataBag();
DiacriticsRemover DR = new DiacriticsRemover();
for (TextWithLanguage title : dm.getBasicMetadata().getTitleList()) {
if (lang != null && !lang.equalsIgnoreCase(title.getLanguage())) {
continue;
}
String sTitle = title.getText();
String normalized_title = (String) DR.normalize(sTitle);
if (normalized_title == null) {
continue;
}
String[] normals = normalized_title.split("[\\W]+");
for (String s : normals) {
if (s.isEmpty()) {
continue;
}
Object normalized = normalizeExtracted(s);
if (normalized == null) {
continue;
}
Tuple t = TupleFactory.getInstance().newTuple(normalized);
db.add(t);
}
}
return db;
}
@Override
public DataBag getValue() {
DataBag output = BagFactory.getInstance().newDefaultBag();
for (ScoredTuple sample : getReservoir()) {
output.add(sample.getTuple());
}
return output;
}
/**
* create bag having given number of tuples
*
* @param size
* @return
*/
private DataBag createBag(int size) {
Tuple innerTuple = TupleFactory.getInstance().newTuple();
innerTuple.append(Integer.valueOf(1));
DataBag bag = BagFactory.getInstance().newDefaultBag();
for (int i = 0; i < size; i++) {
bag.add(innerTuple);
}
return bag;
}
@SuppressWarnings("unchecked")
@Override
public DataBag exec(Tuple input) throws IOException {
if (input.size() < 2) {
throw new RuntimeException("Expected at least two inputs, but found " + input.size());
}
for (Object o : input) {
if (o != null && !(o instanceof DataBag)) {
throw new RuntimeException("Inputs must be bags");
}
}
DataBag outputBag = bagFactory.newDefaultBag();
DataBag bag1 = (DataBag) input.get(0);
DataBag bag2 = (DataBag) input.get(1);
if (bag1 == null || bag1.size() == 0) {
return outputBag;
}
// optimization
else if (input.size() == 2 && (bag2 == null || bag2.size() == 0)) {
return bag1;
}
PriorityQueue<Pair> pq = loadBags(input);
Tuple lastData = null;
while (true) {
Pair nextPair = pq.peek();
// ignore data we've already encountered
if (nextPair.data.compareTo(lastData) != 0) {
// Only take data from the first bag, where there are no other
// bags that have the same data.
if (nextPair.index.equals(0) && countMatches(pq) == 0) {
outputBag.add(nextPair.data);
lastData = nextPair.data;
}
}
Pair p = pq.poll();
// only put the bag back into the queue if it still has data
if (p.hasNext()) {
p.next();
pq.offer(p);
} else if (p.index.equals(0)) {
// stop when we exhaust all elements from the first bag
break;
}
}
return outputBag;
}
@Override
public Tuple exec(Tuple input) throws IOException {
if (input == null || input.size() == 0) {
return null;
}
Object obj = null;
Integer limnum = null;
try {
obj = (DataByteArray) input.get(1);
} catch (ExecException e) {
logger.error("Error in reading field proto:", e);
throw e;
}
try {
limnum = (Integer) input.get(2);
} catch (ExecException e) {
logger.error("Error in reading baglimit:", e);
throw e;
}
DataByteArray dba = null;
try {
dba = (DataByteArray) obj;
} catch (ClassCastException e) {
logger.error("Error in casting Object (" + input.getType(1) + ") to DataByteArray:", e);
throw e;
}
DocumentMetadata dm = null;
try {
dm = DocumentMetadata.parseFrom(dba.get());
} catch (InvalidProtocolBufferException e) {
logger.error("Error in reading ByteArray to DocumentMetadata:", e);
throw e;
}
String key = dm.getKey();
DataBag db = new DefaultDataBag();
int bagsize = 0;
for (ClassifCode code : dm.getBasicMetadata().getClassifCodeList()) {
for (String co_str : code.getValueList()) {
bagsize++;
db.add(TupleFactory.getInstance().newTuple(co_str));
}
}
if (bagsize > limnum) {
Object[] to = new Object[] {key, db, bagsize};
return TupleFactory.getInstance().newTuple(Arrays.asList(to));
}
return null;
}
@Override
public void setInput(Map<String, Block> input, JsonNode operatorJson, BlockProperties props)
throws IOException, InterruptedException {
inputBlock = input.values().iterator().next();
init(operatorJson, inputBlock.getProperties().getSchema());
nullBag = BagFactory.getInstance().newDefaultBag();
nullBag.add(TupleFactory.getInstance().newTuple(0));
}
@Override
public DataBag exec(Tuple input) throws IOException {
retrieveContextValues();
ArrayList<String> joinKeyNames = new ArrayList<String>();
for (int i = 1; i < input.size(); i += 2) {
joinKeyNames.add((String) input.get(i));
}
JoinCollector collector = new JoinCollector();
// the first bag is the outer bag
String leftBagName = bagNames.get(0);
DataBag leftBag = getBag(input, leftBagName);
String leftBagJoinKeyName =
getPrefixedAliasName(bagNameToJoinKeyPrefix.get(leftBagName), joinKeyNames.get(0));
collector.setJoinData(collector.groupTuples(leftBag, leftBagJoinKeyName));
// now, for each additional bag, group up the tuples by the join key, then join them in
if (bagNames.size() > 1) {
for (int i = 1; i < bagNames.size(); i++) {
String bagName = bagNames.get(i);
DataBag bag = getBag(input, bagName);
String joinKeyName =
getPrefixedAliasName(bagNameToJoinKeyPrefix.get(bagName), joinKeyNames.get(i));
int tupleSize = bagNameToSize.get(bagName);
if (bag == null)
throw new IOException(
"Error in instance: "
+ getInstanceName()
+ " with properties: "
+ getInstanceProperties()
+ " and tuple: "
+ input.toDelimitedString(", ")
+ " -- Expected bag, got null");
HashMap<Object, List<Tuple>> groupedData = collector.groupTuples(bag, joinKeyName);
// outer join, so go back in and add nulls;
groupedData = collector.insertNullTuples(groupedData, tupleSize);
for (Map.Entry<Object, List<Tuple>> entry : groupedData.entrySet()) {
collector.joinTuples(entry.getKey(), entry.getValue());
}
}
}
// assemble output bag
DataBag outputBag = BagFactory.getInstance().newDefaultBag();
for (List<Tuple> tuples : collector.getJoinData().values()) {
for (Tuple tuple : tuples) {
outputBag.add(tuple);
}
}
return outputBag;
}
public void testSkewedJoinOuter() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE5 + "' as (id,name);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE5 + "' as (id,name);");
try {
DataBag dbfrj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery("C = join A by id left, B by id using \"skewed\";");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by id right, B by id using \"skewed\";");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by id full, B by id using \"skewed\";");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
} catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
fail("Should support outer join in skewed join");
}
return;
}
public DataBag exec(Tuple input) throws IOException {
try {
DataBag bag = BagFactory.getInstance().newDefaultBag();
for (int i = 0; i < input.size(); i++) {
final Object object = input.get(i);
if (object instanceof Tuple) {
for (int j = 0; j < ((Tuple) object).size(); j++) {
Tuple tp2 = TupleFactory.getInstance().newTuple(1);
tp2.set(0, ((Tuple) object).get(j));
bag.add(tp2);
}
} else {
Tuple tp2 = TupleFactory.getInstance().newTuple(1);
tp2.set(0, object);
bag.add(tp2);
}
}
return bag;
} catch (Exception ee) {
throw new RuntimeException("Error while creating a bag", ee);
}
}
public void testSkewedJoinReducers() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE1 + "' as (id, name, n);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (id, name);");
try {
DataBag dbfrj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery("C = join A by id, B by id using \"skewed\" parallel 1;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
} catch (Exception e) {
fail("Should not throw exception, should continue execution");
}
}
@Override
public DataBag exec(Tuple input) throws IOException {
if (input == null || input.size() == 0) {
return null;
}
try {
DataByteArray dba = null;
try {
dba = (DataByteArray) input.get(0);
} catch (ExecException e) {
logger.error("Error in reading field:", e);
throw e;
}
DocumentWrapper dm = null;
try {
dm = DocumentWrapper.parseFrom(dba.get());
} catch (Exception e) {
logger.error("Error in reading ByteArray to DocumentMetadata:", e);
throw e;
}
DataBag ret = new DefaultDataBag();
DataByteArray metadata = new DataByteArray(dm.getDocumentMetadata().toByteArray());
List<Author> authors = dm.getDocumentMetadata().getBasicMetadata().getAuthorList();
for (int i = 0; i < authors.size(); i++) {
String sname = authors.get(i).getSurname();
Object[] to = new Object[] {sname, metadata, i};
Tuple t = TupleFactory.getInstance().newTuple(Arrays.asList(to));
ret.add(t);
}
return ret;
} catch (Exception e) {
logger.error("Error in processing input row:", e);
throw new IOException(
"Caught exception processing input row:\n" + StackTraceExtractor.getStackTrace(e));
}
}
public DataBag exec(Tuple input) throws IOException {
if (input == null || input.size() < 1 || input.isNull(0)) return null;
// Output bag
DataBag bagOfTokens = bagFactory.newDefaultBag();
StringReader textInput = new StringReader(input.get(0).toString());
PTBTokenizer ptbt = new PTBTokenizer(textInput, new CoreLabelTokenFactory(), "");
for (CoreLabel label; ptbt.hasNext(); ) {
label = (CoreLabel) ptbt.next();
if (label.value().length() > 2) {
System.err.println(label.toString());
Tuple termText = tupleFactory.newTuple(label.word());
bagOfTokens.add(termText);
}
}
return bagOfTokens;
}
@Override
public DataBag exec(Tuple input) throws IOException {
DataBag bagOfSamples = (DataBag) input.get(0);
for (Tuple innerTuple : bagOfSamples) {
DataBag samples = (DataBag) innerTuple.get(0);
for (Tuple sample : samples) {
// use the same score as previously generated
getReservoir().consider(ScoredTuple.fromIntermediateTuple(sample));
}
}
DataBag output = BagFactory.getInstance().newDefaultBag();
for (ScoredTuple scoredTuple : getReservoir()) {
// output the original tuple
output.add(scoredTuple.getTuple());
}
return output;
}
public void testSkewedJoin3Way() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE1 + "' as (id, name, n);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (id, name);");
pigServer.registerQuery("C = LOAD '" + INPUT_FILE3 + "' as (id, name);");
try {
DataBag dbfrj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery("D = join A by id, B by id, C by id using \"skewed\" parallel 5;");
Iterator<Tuple> iter = pigServer.openIterator("D");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
} catch (Exception e) {
return;
}
fail("Should throw exception, do not support 3 way join");
}
@SuppressWarnings("unchecked")
private void accumulateData() throws ExecException {
int count = 0;
int length = inputs.size() - 1;
inputBags = new DataBag[length];
its = new Iterator[length];
for (int i = 0; i < length; ++i) {
PhysicalOperator op = inputs.get(i);
DataBag bag = BagFactory.getInstance().newDefaultBag();
inputBags[count] = bag;
for (Result res = op.getNextTuple();
res.returnStatus != POStatus.STATUS_EOP;
res = op.getNextTuple()) {
if (res.returnStatus == POStatus.STATUS_NULL) continue;
if (res.returnStatus == POStatus.STATUS_ERR)
throw new ExecException("Error accumulating data in the local Cross operator");
if (res.returnStatus == POStatus.STATUS_OK) bag.add((Tuple) res.result);
}
its[count++] = bag.iterator();
}
}
public void testSkewedJoinMapKey() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE4 + "' as (m:[]);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE4 + "' as (n:[]);");
try {
DataBag dbfrj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery(
"C = join A by (chararray)m#'a100', B by (chararray)n#'a100' using \"skewed\" parallel 20;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
} catch (Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
fail("Should support maps and expression operators as keys");
}
return;
}
private Pair<String, DataBag> extractLangKeywords(DocumentMetadata dm) {
List<String> kws = new ArrayList<String>();
Set<String> ctgs = new HashSet<String>();
for (KeywordsList kwl : dm.getKeywordsList()) {
if (language.equalsIgnoreCase(kwl.getLanguage())) {
for (String str : kwl.getKeywordsList()) {
if (isClassifCode(str)) {
ctgs.add(str);
continue;
}
if (action == Action.TRANSLATE) {
str = translateNonAlphaNumeric(str);
} else if (action == Action.REMOVE_KEYCHARACTERS) {
str = removeAllKeyPunctations(str);
} else {
str = removeAllNonAlphaNumeric(str);
}
kws.add(str);
}
}
}
for (ClassifCode cc : dm.getBasicMetadata().getClassifCodeList()) {
for (String s : cc.getValueList()) {
ctgs.add(s);
}
}
DataBag db = new DefaultDataBag();
for (String s : ctgs) {
db.add(TupleFactory.getInstance().newTuple(s));
}
return new Pair<String, DataBag>(Joiner.on(" ").join(kws), db);
}
