/** Populate the cache for this group. */
WALProvider populateCache(final byte[] group) throws IOException {
final WALProvider temp =
factory.getProvider(
DELEGATE_PROVIDER,
DEFAULT_DELEGATE_PROVIDER,
listeners,
providerId + "-" + UUID.randomUUID());
final WALProvider extant = cached.putIfAbsent(group, temp);
if (null != extant) {
// someone else beat us to initializing, just take what they set.
temp.close();
return extant;
}
return temp;
}
private HRegion openRegion(
final FileSystem fs,
final Path dir,
final HTableDescriptor htd,
final WALFactory wals,
final long whenToRoll,
final LogRoller roller)
throws IOException {
// Initialize HRegion
HRegionInfo regionInfo = new HRegionInfo(htd.getTableName());
// Initialize WAL
final WAL wal = wals.getWAL(regionInfo.getEncodedNameAsBytes());
// If we haven't already, attach a listener to this wal to handle rolls and metrics.
if (walsListenedTo.add(wal)) {
roller.addWAL(wal);
wal.registerWALActionsListener(
new WALActionsListener.Base() {
private int appends = 0;
@Override
public void visitLogEntryBeforeWrite(
HTableDescriptor htd, WALKey logKey, WALEdit logEdit) {
this.appends++;
if (this.appends % whenToRoll == 0) {
LOG.info("Rolling after " + appends + " edits");
// We used to do explicit call to rollWriter but changed it to a request
// to avoid dead lock (there are less threads going on in this class than
// in the regionserver -- regionserver does not have the issue).
DefaultWALProvider.requestLogRoll(wal);
}
}
@Override
public void postSync(final long timeInNanos, final int handlerSyncs) {
syncMeter.mark();
syncHistogram.update(timeInNanos);
syncCountHistogram.update(handlerSyncs);
}
@Override
public void postAppend(final long size, final long elapsedTime) {
appendMeter.mark(size);
}
});
}
return HRegion.createHRegion(regionInfo, dir, getConf(), htd, wal);
}
/**
* Verify the content of the WAL file. Verify that the file has expected number of edits.
*
* @param wals may not be null
* @param wal
* @return Count of edits.
* @throws IOException
*/
private long verify(final WALFactory wals, final Path wal, final boolean verbose)
throws IOException {
WAL.Reader reader = wals.createReader(wal.getFileSystem(getConf()), wal);
long count = 0;
Map<String, Long> sequenceIds = new HashMap<String, Long>();
try {
while (true) {
WAL.Entry e = reader.next();
if (e == null) {
LOG.debug("Read count=" + count + " from " + wal);
break;
}
count++;
long seqid = e.getKey().getLogSeqNum();
if (sequenceIds.containsKey(Bytes.toString(e.getKey().getEncodedRegionName()))) {
// sequenceIds should be increasing for every regions
if (sequenceIds.get(Bytes.toString(e.getKey().getEncodedRegionName())) >= seqid) {
throw new IllegalStateException(
"wal = "
+ wal.getName()
+ ", "
+ "previous seqid = "
+ sequenceIds.get(Bytes.toString(e.getKey().getEncodedRegionName()))
+ ", current seqid = "
+ seqid);
}
}
// update the sequence Id.
sequenceIds.put(Bytes.toString(e.getKey().getEncodedRegionName()), seqid);
if (verbose) LOG.info("seqid=" + seqid);
}
} finally {
reader.close();
}
return count;
}
@Override
public int run(String[] args) throws Exception {
Path rootRegionDir = null;
int numThreads = 1;
long numIterations = 1000000;
int numFamilies = 1;
int syncInterval = 0;
boolean noSync = false;
boolean verify = false;
boolean verbose = false;
boolean cleanup = true;
boolean noclosefs = false;
long roll = Long.MAX_VALUE;
boolean compress = false;
String cipher = null;
int numRegions = 1;
String spanReceivers = getConf().get("hbase.trace.spanreceiver.classes");
boolean trace = spanReceivers != null && !spanReceivers.isEmpty();
double traceFreq = 1.0;
// Process command line args
for (int i = 0; i < args.length; i++) {
String cmd = args[i];
try {
if (cmd.equals("-threads")) {
numThreads = Integer.parseInt(args[++i]);
} else if (cmd.equals("-iterations")) {
numIterations = Long.parseLong(args[++i]);
} else if (cmd.equals("-path")) {
rootRegionDir = new Path(args[++i]);
} else if (cmd.equals("-families")) {
numFamilies = Integer.parseInt(args[++i]);
} else if (cmd.equals("-qualifiers")) {
numQualifiers = Integer.parseInt(args[++i]);
} else if (cmd.equals("-keySize")) {
keySize = Integer.parseInt(args[++i]);
} else if (cmd.equals("-valueSize")) {
valueSize = Integer.parseInt(args[++i]);
} else if (cmd.equals("-syncInterval")) {
syncInterval = Integer.parseInt(args[++i]);
} else if (cmd.equals("-nosync")) {
noSync = true;
} else if (cmd.equals("-verify")) {
verify = true;
} else if (cmd.equals("-verbose")) {
verbose = true;
} else if (cmd.equals("-nocleanup")) {
cleanup = false;
} else if (cmd.equals("-noclosefs")) {
noclosefs = true;
} else if (cmd.equals("-roll")) {
roll = Long.parseLong(args[++i]);
} else if (cmd.equals("-compress")) {
compress = true;
} else if (cmd.equals("-encryption")) {
cipher = args[++i];
} else if (cmd.equals("-regions")) {
numRegions = Integer.parseInt(args[++i]);
} else if (cmd.equals("-traceFreq")) {
traceFreq = Double.parseDouble(args[++i]);
} else if (cmd.equals("-h")) {
printUsageAndExit();
} else if (cmd.equals("--help")) {
printUsageAndExit();
} else {
System.err.println("UNEXPECTED: " + cmd);
printUsageAndExit();
}
} catch (Exception e) {
printUsageAndExit();
}
}
if (compress) {
Configuration conf = getConf();
conf.setBoolean(HConstants.ENABLE_WAL_COMPRESSION, true);
}
if (cipher != null) {
// Set up WAL for encryption
Configuration conf = getConf();
conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, KeyProviderForTesting.class.getName());
conf.set(HConstants.CRYPTO_MASTERKEY_NAME_CONF_KEY, "hbase");
conf.setClass(
"hbase.regionserver.hlog.reader.impl", SecureProtobufLogReader.class, WAL.Reader.class);
conf.setClass(
"hbase.regionserver.hlog.writer.impl", SecureProtobufLogWriter.class, Writer.class);
conf.setBoolean(HConstants.ENABLE_WAL_ENCRYPTION, true);
conf.set(HConstants.CRYPTO_WAL_ALGORITHM_CONF_KEY, cipher);
}
if (numThreads < numRegions) {
LOG.warn("Number of threads is less than the number of regions; some regions will sit idle.");
}
// Internal config. goes off number of threads; if more threads than handlers, stuff breaks.
// In regionserver, number of handlers == number of threads.
getConf().setInt(HConstants.REGION_SERVER_HANDLER_COUNT, numThreads);
// Run WAL Performance Evaluation
// First set the fs from configs. In case we are on hadoop1
FSUtils.setFsDefault(getConf(), FSUtils.getRootDir(getConf()));
FileSystem fs = FileSystem.get(getConf());
LOG.info("FileSystem: " + fs);
SpanReceiverHost receiverHost = trace ? SpanReceiverHost.getInstance(getConf()) : null;
TraceScope scope = Trace.startSpan("WALPerfEval", trace ? Sampler.ALWAYS : Sampler.NEVER);
try {
if (rootRegionDir == null) {
rootRegionDir = TEST_UTIL.getDataTestDirOnTestFS("WALPerformanceEvaluation");
}
rootRegionDir = rootRegionDir.makeQualified(fs);
cleanRegionRootDir(fs, rootRegionDir);
FSUtils.setRootDir(getConf(), rootRegionDir);
final WALFactory wals = new WALFactory(getConf(), null, "wals");
final HRegion[] regions = new HRegion[numRegions];
final Runnable[] benchmarks = new Runnable[numRegions];
final MockRegionServerServices mockServices = new MockRegionServerServices(getConf());
final LogRoller roller = new LogRoller(mockServices, mockServices);
Threads.setDaemonThreadRunning(roller.getThread(), "WALPerfEval.logRoller");
try {
for (int i = 0; i < numRegions; i++) {
// Initialize Table Descriptor
// a table per desired region means we can avoid carving up the key space
final HTableDescriptor htd = createHTableDescriptor(i, numFamilies);
regions[i] = openRegion(fs, rootRegionDir, htd, wals, roll, roller);
benchmarks[i] =
Trace.wrap(
new WALPutBenchmark(
regions[i], htd, numIterations, noSync, syncInterval, traceFreq));
}
ConsoleReporter.enable(this.metrics, 30, TimeUnit.SECONDS);
long putTime = runBenchmark(benchmarks, numThreads);
logBenchmarkResult(
"Summary: threads="
+ numThreads
+ ", iterations="
+ numIterations
+ ", syncInterval="
+ syncInterval,
numIterations * numThreads,
putTime);
for (int i = 0; i < numRegions; i++) {
if (regions[i] != null) {
closeRegion(regions[i]);
regions[i] = null;
}
}
if (verify) {
LOG.info("verifying written log entries.");
Path dir =
new Path(
FSUtils.getRootDir(getConf()), DefaultWALProvider.getWALDirectoryName("wals"));
long editCount = 0;
FileStatus[] fsss = fs.listStatus(dir);
if (fsss.length == 0) throw new IllegalStateException("No WAL found");
for (FileStatus fss : fsss) {
Path p = fss.getPath();
if (!fs.exists(p)) throw new IllegalStateException(p.toString());
editCount += verify(wals, p, verbose);
}
long expected = numIterations * numThreads;
if (editCount != expected) {
throw new IllegalStateException("Counted=" + editCount + ", expected=" + expected);
}
}
} finally {
mockServices.stop("test clean up.");
for (int i = 0; i < numRegions; i++) {
if (regions[i] != null) {
closeRegion(regions[i]);
}
}
if (null != roller) {
LOG.info("shutting down log roller.");
Threads.shutdown(roller.getThread());
}
wals.shutdown();
// Remove the root dir for this test region
if (cleanup) cleanRegionRootDir(fs, rootRegionDir);
}
} finally {
// We may be called inside a test that wants to keep on using the fs.
if (!noclosefs) fs.close();
scope.close();
if (receiverHost != null) receiverHost.closeReceivers();
}
return (0);
}
