private WALEntry createEntry(byte[] table, int row, KeyValue.Type type, List<Cell> cells) {
byte[] fam = Bytes.equals(table, TABLE_NAME1) ? FAM_NAME1 : FAM_NAME2;
byte[] rowBytes = Bytes.toBytes(row);
// Just make sure we don't get the same ts for two consecutive rows with
// same key
try {
Thread.sleep(1);
} catch (InterruptedException e) {
LOG.info("Was interrupted while sleep, meh", e);
}
final long now = System.currentTimeMillis();
KeyValue kv = null;
if (type.getCode() == KeyValue.Type.Put.getCode()) {
kv = new KeyValue(rowBytes, fam, fam, now, KeyValue.Type.Put, Bytes.toBytes(row));
} else if (type.getCode() == KeyValue.Type.DeleteColumn.getCode()) {
kv = new KeyValue(rowBytes, fam, fam, now, KeyValue.Type.DeleteColumn);
} else if (type.getCode() == KeyValue.Type.DeleteFamily.getCode()) {
kv = new KeyValue(rowBytes, fam, null, now, KeyValue.Type.DeleteFamily);
}
WALEntry.Builder builder = WALEntry.newBuilder();
builder.setAssociatedCellCount(1);
WALKey.Builder keyBuilder = WALKey.newBuilder();
UUID.Builder uuidBuilder = UUID.newBuilder();
uuidBuilder.setLeastSigBits(HConstants.DEFAULT_CLUSTER_ID.getLeastSignificantBits());
uuidBuilder.setMostSigBits(HConstants.DEFAULT_CLUSTER_ID.getMostSignificantBits());
keyBuilder.setClusterId(uuidBuilder.build());
keyBuilder.setTableName(HBaseZeroCopyByteString.wrap(table));
keyBuilder.setWriteTime(now);
keyBuilder.setEncodedRegionName(HBaseZeroCopyByteString.wrap(HConstants.EMPTY_BYTE_ARRAY));
keyBuilder.setLogSequenceNumber(-1);
builder.setKey(keyBuilder.build());
cells.add(kv);
return builder.build();
}
static CellProtos.Cell getStartCode(final ByteString row) {
CellProtos.Cell.Builder cellBuilder = getBaseCellBuilder(row);
cellBuilder.setQualifier(HBaseZeroCopyByteString.wrap(HConstants.STARTCODE_QUALIFIER));
// TODO:
cellBuilder.setValue(
HBaseZeroCopyByteString.wrap(Bytes.toBytes(META_SERVERNAME.getStartcode())));
return cellBuilder.build();
}
static ScanResponse doMetaScanResponse(
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta,
final AtomicLong sequenceids,
final ScanRequest request) {
ScanResponse.Builder builder = ScanResponse.newBuilder();
int max = request.getNumberOfRows();
int count = 0;
Map<byte[], Pair<HRegionInfo, ServerName>> tail =
request.hasScan() ? meta.tailMap(request.getScan().getStartRow().toByteArray()) : meta;
ClientProtos.Result.Builder resultBuilder = ClientProtos.Result.newBuilder();
for (Map.Entry<byte[], Pair<HRegionInfo, ServerName>> e : tail.entrySet()) {
// Can be 0 on open of a scanner -- i.e. rpc to setup scannerid only.
if (max <= 0) break;
if (++count > max) break;
HRegionInfo hri = e.getValue().getFirst();
ByteString row = HBaseZeroCopyByteString.wrap(hri.getRegionName());
resultBuilder.clear();
resultBuilder.addCell(getRegionInfo(row, hri));
resultBuilder.addCell(getServer(row, e.getValue().getSecond()));
resultBuilder.addCell(getStartCode(row));
builder.addResults(resultBuilder.build());
// Set more to false if we are on the last region in table.
if (hri.getEndKey().length <= 0) builder.setMoreResults(false);
else builder.setMoreResults(true);
}
// If no scannerid, set one.
builder.setScannerId(
request.hasScannerId() ? request.getScannerId() : sequenceids.incrementAndGet());
return builder.build();
}
@Test
public void testExecuteSerialization() throws Exception {
Service.ExecuteRequest executeRequest =
new Service.ExecuteRequest(
new StatementHandle("connection", 12345, getSignature()), getTypedValues(), 0);
Requests.ExecuteRequest pbExecuteRequest = executeRequest.serialize();
ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
pbExecuteRequest.writeTo(baos);
byte[] serialized = baos.toByteArray();
baos.reset();
WireMessage wireMsg =
WireMessage.newBuilder()
.setName(Requests.ExecuteRequest.class.getName())
.setWrappedMessage(HBaseZeroCopyByteString.wrap(serialized))
.build();
wireMsg.writeTo(baos);
serialized = baos.toByteArray();
ProtobufTranslation translator = new ProtobufTranslationImpl();
Request newRequest = translator.parseRequest(serialized);
Assert.assertEquals(executeRequest, newRequest);
}
/** Test client behavior w/o setting up a cluster. Mock up cluster emissions. */
@Category(SmallTests.class)
public class TestClientNoCluster extends Configured implements Tool {
private static final Log LOG = LogFactory.getLog(TestClientNoCluster.class);
private Configuration conf;
public static final ServerName META_SERVERNAME =
ServerName.valueOf("meta.example.org", 60010, 12345);
@Before
public void setUp() throws Exception {
this.conf = HBaseConfiguration.create();
// Run my HConnection overrides. Use my little HConnectionImplementation below which
// allows me insert mocks and also use my Registry below rather than the default zk based
// one so tests run faster and don't have zk dependency.
this.conf.set("hbase.client.registry.impl", SimpleRegistry.class.getName());
}
/** Simple cluster registry inserted in place of our usual zookeeper based one. */
static class SimpleRegistry implements Registry {
final ServerName META_HOST = META_SERVERNAME;
@Override
public void init(HConnection connection) {}
@Override
public HRegionLocation getMetaRegionLocation() throws IOException {
return new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, META_HOST);
}
@Override
public String getClusterId() {
return HConstants.CLUSTER_ID_DEFAULT;
}
@Override
public boolean isTableOnlineState(TableName tableName, boolean enabled) throws IOException {
return enabled;
}
@Override
public int getCurrentNrHRS() throws IOException {
return 1;
}
}
/**
* Remove the @Ignore to try out timeout and retry asettings
*
* @throws IOException
*/
@Ignore
@Test
public void testTimeoutAndRetries() throws IOException {
Configuration localConfig = HBaseConfiguration.create(this.conf);
// This override mocks up our exists/get call to throw a RegionServerStoppedException.
localConfig.set("hbase.client.connection.impl", RpcTimeoutConnection.class.getName());
HTable table = new HTable(localConfig, TableName.META_TABLE_NAME);
Throwable t = null;
LOG.info("Start");
try {
// An exists call turns into a get w/ a flag.
table.exists(new Get(Bytes.toBytes("abc")));
} catch (SocketTimeoutException e) {
// I expect this exception.
LOG.info("Got expected exception", e);
t = e;
} catch (RetriesExhaustedException e) {
// This is the old, unwanted behavior. If we get here FAIL!!!
fail();
} finally {
table.close();
}
LOG.info("Stop");
assertTrue(t != null);
}
/**
* Test that operation timeout prevails over rpc default timeout and retries, etc.
*
* @throws IOException
*/
@Test
public void testRocTimeout() throws IOException {
Configuration localConfig = HBaseConfiguration.create(this.conf);
// This override mocks up our exists/get call to throw a RegionServerStoppedException.
localConfig.set("hbase.client.connection.impl", RpcTimeoutConnection.class.getName());
int pause = 10;
localConfig.setInt("hbase.client.pause", pause);
localConfig.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 10);
// Set the operation timeout to be < the pause. Expectation is that after first pause, we will
// fail out of the rpc because the rpc timeout will have been set to the operation tiemout
// and it has expired. Otherwise, if this functionality is broke, all retries will be run --
// all ten of them -- and we'll get the RetriesExhaustedException exception.
localConfig.setInt(HConstants.HBASE_CLIENT_META_OPERATION_TIMEOUT, pause - 1);
HTable table = new HTable(localConfig, TableName.META_TABLE_NAME);
Throwable t = null;
try {
// An exists call turns into a get w/ a flag.
table.exists(new Get(Bytes.toBytes("abc")));
} catch (SocketTimeoutException e) {
// I expect this exception.
LOG.info("Got expected exception", e);
t = e;
} catch (RetriesExhaustedException e) {
// This is the old, unwanted behavior. If we get here FAIL!!!
fail();
} finally {
table.close();
}
assertTrue(t != null);
}
@Test
public void testDoNotRetryMetaScanner() throws IOException {
this.conf.set(
"hbase.client.connection.impl", RegionServerStoppedOnScannerOpenConnection.class.getName());
MetaScanner.metaScan(this.conf, null);
}
@Test
public void testDoNotRetryOnScanNext() throws IOException {
this.conf.set(
"hbase.client.connection.impl", RegionServerStoppedOnScannerOpenConnection.class.getName());
// Go against meta else we will try to find first region for the table on construction which
// means we'll have to do a bunch more mocking. Tests that go against meta only should be
// good for a bit of testing.
HTable table = new HTable(this.conf, TableName.META_TABLE_NAME);
ResultScanner scanner = table.getScanner(HConstants.CATALOG_FAMILY);
try {
Result result = null;
while ((result = scanner.next()) != null) {
LOG.info(result);
}
} finally {
scanner.close();
table.close();
}
}
@Test
public void testRegionServerStoppedOnScannerOpen() throws IOException {
this.conf.set(
"hbase.client.connection.impl", RegionServerStoppedOnScannerOpenConnection.class.getName());
// Go against meta else we will try to find first region for the table on construction which
// means we'll have to do a bunch more mocking. Tests that go against meta only should be
// good for a bit of testing.
HTable table = new HTable(this.conf, TableName.META_TABLE_NAME);
ResultScanner scanner = table.getScanner(HConstants.CATALOG_FAMILY);
try {
Result result = null;
while ((result = scanner.next()) != null) {
LOG.info(result);
}
} finally {
scanner.close();
table.close();
}
}
/** Override to shutdown going to zookeeper for cluster id and meta location. */
static class ScanOpenNextThenExceptionThenRecoverConnection
extends HConnectionManager.HConnectionImplementation {
final ClientService.BlockingInterface stub;
ScanOpenNextThenExceptionThenRecoverConnection(
Configuration conf, boolean managed, ExecutorService pool) throws IOException {
super(conf, managed);
// Mock up my stub so open scanner returns a scanner id and then on next, we throw
// exceptions for three times and then after that, we return no more to scan.
this.stub = Mockito.mock(ClientService.BlockingInterface.class);
long sid = 12345L;
try {
Mockito.when(
stub.scan((RpcController) Mockito.any(), (ClientProtos.ScanRequest) Mockito.any()))
.thenReturn(ClientProtos.ScanResponse.newBuilder().setScannerId(sid).build())
.thenThrow(new ServiceException(new RegionServerStoppedException("From Mockito")))
.thenReturn(
ClientProtos.ScanResponse.newBuilder()
.setScannerId(sid)
.setMoreResults(false)
.build());
} catch (ServiceException e) {
throw new IOException(e);
}
}
@Override
public BlockingInterface getClient(ServerName sn) throws IOException {
return this.stub;
}
}
/** Override to shutdown going to zookeeper for cluster id and meta location. */
static class RegionServerStoppedOnScannerOpenConnection
extends HConnectionManager.HConnectionImplementation {
final ClientService.BlockingInterface stub;
RegionServerStoppedOnScannerOpenConnection(
Configuration conf, boolean managed, ExecutorService pool, User user) throws IOException {
super(conf, managed);
// Mock up my stub so open scanner returns a scanner id and then on next, we throw
// exceptions for three times and then after that, we return no more to scan.
this.stub = Mockito.mock(ClientService.BlockingInterface.class);
long sid = 12345L;
try {
Mockito.when(
stub.scan((RpcController) Mockito.any(), (ClientProtos.ScanRequest) Mockito.any()))
.thenReturn(ClientProtos.ScanResponse.newBuilder().setScannerId(sid).build())
.thenThrow(new ServiceException(new RegionServerStoppedException("From Mockito")))
.thenReturn(
ClientProtos.ScanResponse.newBuilder()
.setScannerId(sid)
.setMoreResults(false)
.build());
} catch (ServiceException e) {
throw new IOException(e);
}
}
@Override
public BlockingInterface getClient(ServerName sn) throws IOException {
return this.stub;
}
}
/** Override to check we are setting rpc timeout right. */
static class RpcTimeoutConnection extends HConnectionManager.HConnectionImplementation {
final ClientService.BlockingInterface stub;
RpcTimeoutConnection(Configuration conf, boolean managed, ExecutorService pool, User user)
throws IOException {
super(conf, managed);
// Mock up my stub so an exists call -- which turns into a get -- throws an exception
this.stub = Mockito.mock(ClientService.BlockingInterface.class);
try {
Mockito.when(
stub.get((RpcController) Mockito.any(), (ClientProtos.GetRequest) Mockito.any()))
.thenThrow(new ServiceException(new RegionServerStoppedException("From Mockito")));
} catch (ServiceException e) {
throw new IOException(e);
}
}
@Override
public BlockingInterface getClient(ServerName sn) throws IOException {
return this.stub;
}
}
/** Fake many regionservers and many regions on a connection implementation. */
static class ManyServersManyRegionsConnection
extends HConnectionManager.HConnectionImplementation {
// All access should be synchronized
final Map<ServerName, ClientService.BlockingInterface> serversByClient;
/** Map of faked-up rows of a 'meta table'. */
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta;
final AtomicLong sequenceids = new AtomicLong(0);
private final Configuration conf;
ManyServersManyRegionsConnection(
Configuration conf, boolean managed, ExecutorService pool, User user) throws IOException {
super(conf, managed, pool, user);
int serverCount = conf.getInt("hbase.test.servers", 10);
this.serversByClient = new HashMap<ServerName, ClientService.BlockingInterface>(serverCount);
this.meta =
makeMeta(
Bytes.toBytes(conf.get("hbase.test.tablename", Bytes.toString(BIG_USER_TABLE))),
conf.getInt("hbase.test.regions", 100),
conf.getLong("hbase.test.namespace.span", 1000),
serverCount);
this.conf = conf;
}
@Override
public ClientService.BlockingInterface getClient(ServerName sn) throws IOException {
// if (!sn.toString().startsWith("meta")) LOG.info(sn);
ClientService.BlockingInterface stub = null;
synchronized (this.serversByClient) {
stub = this.serversByClient.get(sn);
if (stub == null) {
stub = new FakeServer(this.conf, meta, sequenceids);
this.serversByClient.put(sn, stub);
}
}
return stub;
}
}
static MultiResponse doMultiResponse(
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta,
final AtomicLong sequenceids,
final MultiRequest request) {
// Make a response to match the request. Act like there were no failures.
ClientProtos.MultiResponse.Builder builder = ClientProtos.MultiResponse.newBuilder();
// Per Region.
RegionActionResult.Builder regionActionResultBuilder = RegionActionResult.newBuilder();
ResultOrException.Builder roeBuilder = ResultOrException.newBuilder();
for (RegionAction regionAction : request.getRegionActionList()) {
regionActionResultBuilder.clear();
// Per Action in a Region.
for (ClientProtos.Action action : regionAction.getActionList()) {
roeBuilder.clear();
// Return empty Result and proper index as result.
roeBuilder.setResult(ClientProtos.Result.getDefaultInstance());
roeBuilder.setIndex(action.getIndex());
regionActionResultBuilder.addResultOrException(roeBuilder.build());
}
builder.addRegionActionResult(regionActionResultBuilder.build());
}
return builder.build();
}
/**
* Fake 'server'. Implements the ClientService responding as though it were a 'server' (presumes a
* new ClientService.BlockingInterface made per server).
*/
static class FakeServer implements ClientService.BlockingInterface {
private AtomicInteger multiInvocationsCount = new AtomicInteger(0);
private final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta;
private final AtomicLong sequenceids;
private final long multiPause;
private final int tooManyMultiRequests;
FakeServer(
final Configuration c,
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta,
final AtomicLong sequenceids) {
this.meta = meta;
this.sequenceids = sequenceids;
// Pause to simulate the server taking time applying the edits. This will drive up the
// number of threads used over in client.
this.multiPause = c.getLong("hbase.test.multi.pause.when.done", 0);
this.tooManyMultiRequests = c.getInt("hbase.test.multi.too.many", 3);
}
@Override
public GetResponse get(RpcController controller, GetRequest request) throws ServiceException {
boolean metaRegion =
isMetaRegion(request.getRegion().getValue().toByteArray(), request.getRegion().getType());
if (!metaRegion) {
return doGetResponse(request);
}
return doMetaGetResponse(meta, request);
}
private GetResponse doGetResponse(GetRequest request) {
ClientProtos.Result.Builder resultBuilder = ClientProtos.Result.newBuilder();
ByteString row = request.getGet().getRow();
resultBuilder.addCell(getStartCode(row));
GetResponse.Builder builder = GetResponse.newBuilder();
builder.setResult(resultBuilder.build());
return builder.build();
}
@Override
public MutateResponse mutate(RpcController controller, MutateRequest request)
throws ServiceException {
throw new NotImplementedException();
}
@Override
public ScanResponse scan(RpcController controller, ScanRequest request)
throws ServiceException {
// Presume it is a scan of meta for now. Not all scans provide a region spec expecting
// the server to keep reference by scannerid. TODO.
return doMetaScanResponse(meta, sequenceids, request);
}
@Override
public BulkLoadHFileResponse bulkLoadHFile(
RpcController controller, BulkLoadHFileRequest request) throws ServiceException {
throw new NotImplementedException();
}
@Override
public CoprocessorServiceResponse execService(
RpcController controller, CoprocessorServiceRequest request) throws ServiceException {
throw new NotImplementedException();
}
@Override
public MultiResponse multi(RpcController controller, MultiRequest request)
throws ServiceException {
int concurrentInvocations = this.multiInvocationsCount.incrementAndGet();
try {
if (concurrentInvocations >= tooManyMultiRequests) {
throw new ServiceException(
new RegionTooBusyException("concurrentInvocations=" + concurrentInvocations));
}
Threads.sleep(multiPause);
return doMultiResponse(meta, sequenceids, request);
} finally {
this.multiInvocationsCount.decrementAndGet();
}
}
}
static ScanResponse doMetaScanResponse(
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta,
final AtomicLong sequenceids,
final ScanRequest request) {
ScanResponse.Builder builder = ScanResponse.newBuilder();
int max = request.getNumberOfRows();
int count = 0;
Map<byte[], Pair<HRegionInfo, ServerName>> tail =
request.hasScan() ? meta.tailMap(request.getScan().getStartRow().toByteArray()) : meta;
ClientProtos.Result.Builder resultBuilder = ClientProtos.Result.newBuilder();
for (Map.Entry<byte[], Pair<HRegionInfo, ServerName>> e : tail.entrySet()) {
// Can be 0 on open of a scanner -- i.e. rpc to setup scannerid only.
if (max <= 0) break;
if (++count > max) break;
HRegionInfo hri = e.getValue().getFirst();
ByteString row = HBaseZeroCopyByteString.wrap(hri.getRegionName());
resultBuilder.clear();
resultBuilder.addCell(getRegionInfo(row, hri));
resultBuilder.addCell(getServer(row, e.getValue().getSecond()));
resultBuilder.addCell(getStartCode(row));
builder.addResults(resultBuilder.build());
// Set more to false if we are on the last region in table.
if (hri.getEndKey().length <= 0) builder.setMoreResults(false);
else builder.setMoreResults(true);
}
// If no scannerid, set one.
builder.setScannerId(
request.hasScannerId() ? request.getScannerId() : sequenceids.incrementAndGet());
return builder.build();
}
static GetResponse doMetaGetResponse(
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta, final GetRequest request) {
ClientProtos.Result.Builder resultBuilder = ClientProtos.Result.newBuilder();
ByteString row = request.getGet().getRow();
Pair<HRegionInfo, ServerName> p = meta.get(row.toByteArray());
if (p == null) {
if (request.getGet().getClosestRowBefore()) {
byte[] bytes = row.toByteArray();
SortedMap<byte[], Pair<HRegionInfo, ServerName>> head =
bytes != null ? meta.headMap(bytes) : meta;
p = head == null ? null : head.get(head.lastKey());
}
}
if (p != null) {
resultBuilder.addCell(getRegionInfo(row, p.getFirst()));
resultBuilder.addCell(getServer(row, p.getSecond()));
}
resultBuilder.addCell(getStartCode(row));
GetResponse.Builder builder = GetResponse.newBuilder();
builder.setResult(resultBuilder.build());
return builder.build();
}
/**
* @param name region name or encoded region name.
* @param type
* @return True if we are dealing with a hbase:meta region.
*/
static boolean isMetaRegion(final byte[] name, final RegionSpecifierType type) {
switch (type) {
case REGION_NAME:
return Bytes.equals(HRegionInfo.FIRST_META_REGIONINFO.getRegionName(), name);
case ENCODED_REGION_NAME:
return Bytes.equals(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(), name);
default:
throw new UnsupportedOperationException();
}
}
private static final ByteString CATALOG_FAMILY_BYTESTRING =
HBaseZeroCopyByteString.wrap(HConstants.CATALOG_FAMILY);
private static final ByteString REGIONINFO_QUALIFIER_BYTESTRING =
HBaseZeroCopyByteString.wrap(HConstants.REGIONINFO_QUALIFIER);
private static final ByteString SERVER_QUALIFIER_BYTESTRING =
HBaseZeroCopyByteString.wrap(HConstants.SERVER_QUALIFIER);
static CellProtos.Cell.Builder getBaseCellBuilder(final ByteString row) {
CellProtos.Cell.Builder cellBuilder = CellProtos.Cell.newBuilder();
cellBuilder.setRow(row);
cellBuilder.setFamily(CATALOG_FAMILY_BYTESTRING);
cellBuilder.setTimestamp(System.currentTimeMillis());
return cellBuilder;
}
static CellProtos.Cell getRegionInfo(final ByteString row, final HRegionInfo hri) {
CellProtos.Cell.Builder cellBuilder = getBaseCellBuilder(row);
cellBuilder.setQualifier(REGIONINFO_QUALIFIER_BYTESTRING);
cellBuilder.setValue(HBaseZeroCopyByteString.wrap(hri.toByteArray()));
return cellBuilder.build();
}
static CellProtos.Cell getServer(final ByteString row, final ServerName sn) {
CellProtos.Cell.Builder cellBuilder = getBaseCellBuilder(row);
cellBuilder.setQualifier(SERVER_QUALIFIER_BYTESTRING);
cellBuilder.setValue(ByteString.copyFromUtf8(sn.getHostAndPort()));
return cellBuilder.build();
}
static CellProtos.Cell getStartCode(final ByteString row) {
CellProtos.Cell.Builder cellBuilder = getBaseCellBuilder(row);
cellBuilder.setQualifier(HBaseZeroCopyByteString.wrap(HConstants.STARTCODE_QUALIFIER));
// TODO:
cellBuilder.setValue(
HBaseZeroCopyByteString.wrap(Bytes.toBytes(META_SERVERNAME.getStartcode())));
return cellBuilder.build();
}
private static final byte[] BIG_USER_TABLE = Bytes.toBytes("t");
/**
* Format passed integer. Zero-pad. Copied from hbase-server PE class and small amendment. Make
* them share.
*
* @param number
* @return Returns zero-prefixed 10-byte wide decimal version of passed number (Does absolute in
* case number is negative).
*/
private static byte[] format(final long number) {
byte[] b = new byte[10];
long d = number;
for (int i = b.length - 1; i >= 0; i--) {
b[i] = (byte) ((d % 10) + '0');
d /= 10;
}
return b;
}
/**
* @param count
* @param namespaceSpan
* @return <code>count</code> regions
*/
private static HRegionInfo[] makeHRegionInfos(
final byte[] tableName, final int count, final long namespaceSpan) {
byte[] startKey = HConstants.EMPTY_BYTE_ARRAY;
byte[] endKey = HConstants.EMPTY_BYTE_ARRAY;
long interval = namespaceSpan / count;
HRegionInfo[] hris = new HRegionInfo[count];
for (int i = 0; i < count; i++) {
if (i == 0) {
endKey = format(interval);
} else {
startKey = endKey;
if (i == count - 1) endKey = HConstants.EMPTY_BYTE_ARRAY;
else endKey = format((i + 1) * interval);
}
hris[i] = new HRegionInfo(TableName.valueOf(tableName), startKey, endKey);
}
return hris;
}
/**
* @param count
* @return Return <code>count</code> servernames.
*/
private static ServerName[] makeServerNames(final int count) {
ServerName[] sns = new ServerName[count];
for (int i = 0; i < count; i++) {
sns[i] = ServerName.valueOf("" + i + ".example.org", 60010, i);
}
return sns;
}
/** Comparator for meta row keys. */
private static class MetaRowsComparator implements Comparator<byte[]> {
private final KeyValue.KVComparator delegate = new KeyValue.MetaComparator();
@Override
public int compare(byte[] left, byte[] right) {
return delegate.compareRows(left, 0, left.length, right, 0, right.length);
}
}
/**
* Create up a map that is keyed by meta row name and whose value is the HRegionInfo and
* ServerName to return for this row.
*
* @return Map with faked hbase:meta content in it.
*/
static SortedMap<byte[], Pair<HRegionInfo, ServerName>> makeMeta(
final byte[] tableName,
final int regionCount,
final long namespaceSpan,
final int serverCount) {
// I need a comparator for meta rows so we sort properly.
SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta =
new ConcurrentSkipListMap<byte[], Pair<HRegionInfo, ServerName>>(new MetaRowsComparator());
HRegionInfo[] hris = makeHRegionInfos(tableName, regionCount, namespaceSpan);
ServerName[] serverNames = makeServerNames(serverCount);
int per = regionCount / serverCount;
int count = 0;
for (HRegionInfo hri : hris) {
Pair<HRegionInfo, ServerName> p =
new Pair<HRegionInfo, ServerName>(hri, serverNames[count++ / per]);
meta.put(hri.getRegionName(), p);
}
return meta;
}
/**
* Code for each 'client' to run.
*
* @param id
* @param c
* @param sharedConnection
* @throws IOException
*/
static void cycle(int id, final Configuration c, final HConnection sharedConnection)
throws IOException {
HTableInterface table = sharedConnection.getTable(BIG_USER_TABLE);
table.setAutoFlushTo(false);
long namespaceSpan = c.getLong("hbase.test.namespace.span", 1000000);
long startTime = System.currentTimeMillis();
final int printInterval = 100000;
Random rd = new Random(id);
boolean get = c.getBoolean("hbase.test.do.gets", false);
try {
Stopwatch stopWatch = new Stopwatch();
stopWatch.start();
for (int i = 0; i < namespaceSpan; i++) {
byte[] b = format(rd.nextLong());
if (get) {
Get g = new Get(b);
table.get(g);
} else {
Put p = new Put(b);
p.add(HConstants.CATALOG_FAMILY, b, b);
table.put(p);
}
if (i % printInterval == 0) {
LOG.info("Put " + printInterval + "/" + stopWatch.elapsedMillis());
stopWatch.reset();
stopWatch.start();
}
}
LOG.info(
"Finished a cycle putting "
+ namespaceSpan
+ " in "
+ (System.currentTimeMillis() - startTime)
+ "ms");
} finally {
table.close();
}
}
@Override
public int run(String[] arg0) throws Exception {
int errCode = 0;
// TODO: Make command options.
// How many servers to fake.
final int servers = 1;
// How many regions to put on the faked servers.
final int regions = 100000;
// How many 'keys' in the faked regions.
final long namespaceSpan = 50000000;
// How long to take to pause after doing a put; make this long if you want to fake a struggling
// server.
final long multiPause = 0;
// Check args make basic sense.
if ((namespaceSpan < regions) || (regions < servers)) {
throw new IllegalArgumentException(
"namespaceSpan="
+ namespaceSpan
+ " must be > regions="
+ regions
+ " which must be > servers="
+ servers);
}
// Set my many servers and many regions faking connection in place.
getConf().set("hbase.client.connection.impl", ManyServersManyRegionsConnection.class.getName());
// Use simple kv registry rather than zk
getConf().set("hbase.client.registry.impl", SimpleRegistry.class.getName());
// When to report fails. Default is we report the 10th. This means we'll see log everytime
// an exception is thrown -- usually RegionTooBusyException when we have more than
// hbase.test.multi.too.many requests outstanding at any time.
getConf().setInt("hbase.client.start.log.errors.counter", 0);
// Ugly but this is only way to pass in configs.into ManyServersManyRegionsConnection class.
getConf().setInt("hbase.test.regions", regions);
getConf().setLong("hbase.test.namespace.span", namespaceSpan);
getConf().setLong("hbase.test.servers", servers);
getConf().set("hbase.test.tablename", Bytes.toString(BIG_USER_TABLE));
getConf().setLong("hbase.test.multi.pause.when.done", multiPause);
// Let there be ten outstanding requests at a time before we throw RegionBusyException.
getConf().setInt("hbase.test.multi.too.many", 10);
final int clients = 2;
// Have them all share the same connection so they all share the same instance of
// ManyServersManyRegionsConnection so I can keep an eye on how many requests by server.
final ExecutorService pool = Executors.newCachedThreadPool(Threads.getNamedThreadFactory("p"));
// Executors.newFixedThreadPool(servers * 10, Threads.getNamedThreadFactory("p"));
// Share a connection so I can keep counts in the 'server' on concurrency.
final HConnection sharedConnection = HConnectionManager.createConnection(getConf() /*, pool*/);
try {
Thread[] ts = new Thread[clients];
for (int j = 0; j < ts.length; j++) {
final int id = j;
ts[j] =
new Thread("" + j) {
final Configuration c = getConf();
@Override
public void run() {
try {
cycle(id, c, sharedConnection);
} catch (IOException e) {
e.printStackTrace();
}
}
};
ts[j].start();
}
for (int j = 0; j < ts.length; j++) {
ts[j].join();
}
} finally {
sharedConnection.close();
}
return errCode;
}
/**
* Run a client instance against a faked up server.
*
* @param args TODO
* @throws Exception
*/
public static void main(String[] args) throws Exception {
System.exit(ToolRunner.run(HBaseConfiguration.create(), new TestClientNoCluster(), args));
}
}
static CellProtos.Cell getRegionInfo(final ByteString row, final HRegionInfo hri) {
CellProtos.Cell.Builder cellBuilder = getBaseCellBuilder(row);
cellBuilder.setQualifier(REGIONINFO_QUALIFIER_BYTESTRING);
cellBuilder.setValue(HBaseZeroCopyByteString.wrap(hri.toByteArray()));
return cellBuilder.build();
}
