private void createEntries(Opts opts)
throws TableNotFoundException, AccumuloException, AccumuloSecurityException {
// Trace the write operation. Note, unless you flush the BatchWriter, you will not capture
// the write operation as it is occurs asynchronously. You can optionally create additional
// Spans
// within a given Trace as seen below around the flush
TraceScope scope = Trace.startSpan("Client Write", Sampler.ALWAYS);
System.out.println("TraceID: " + Long.toHexString(scope.getSpan().getTraceId()));
BatchWriter batchWriter =
opts.getConnector().createBatchWriter(opts.getTableName(), new BatchWriterConfig());
Mutation m = new Mutation("row");
m.put("cf", "cq", "value");
batchWriter.addMutation(m);
// You can add timeline annotations to Spans which will be able to be viewed in the Monitor
scope.getSpan().addTimelineAnnotation("Initiating Flush");
batchWriter.flush();
batchWriter.close();
scope.close();
}
private void readEntries(Opts opts)
throws TableNotFoundException, AccumuloException, AccumuloSecurityException {
Scanner scanner = opts.getConnector().createScanner(opts.getTableName(), opts.auths);
// Trace the read operation.
TraceScope readScope = Trace.startSpan("Client Read", Sampler.ALWAYS);
System.out.println("TraceID: " + Long.toHexString(readScope.getSpan().getTraceId()));
int numberOfEntriesRead = 0;
for (Entry<Key, Value> entry : scanner) {
System.out.println(entry.getKey().toString() + " -> " + entry.getValue().toString());
++numberOfEntriesRead;
}
// You can add additional metadata (key, values) to Spans which will be able to be viewed in the
// Monitor
readScope
.getSpan()
.addKVAnnotation(
"Number of Entries Read".getBytes(UTF_8),
String.valueOf(numberOfEntriesRead).getBytes(UTF_8));
readScope.close();
}
@Override
public void run() {
byte[] key = new byte[keySize];
byte[] value = new byte[valueSize];
Random rand = new Random(Thread.currentThread().getId());
WAL wal = region.getWAL();
TraceScope threadScope = Trace.startSpan("WALPerfEval." + Thread.currentThread().getName());
try {
long startTime = System.currentTimeMillis();
int lastSync = 0;
for (int i = 0; i < numIterations; ++i) {
assert Trace.currentSpan() == threadScope.getSpan() : "Span leak detected.";
TraceScope loopScope = Trace.startSpan("runLoopIter" + i, loopSampler);
try {
long now = System.nanoTime();
Put put = setupPut(rand, key, value, numFamilies);
WALEdit walEdit = new WALEdit();
addFamilyMapToWALEdit(put.getFamilyCellMap(), walEdit);
HRegionInfo hri = region.getRegionInfo();
final WALKey logkey = new WALKey(hri.getEncodedNameAsBytes(), hri.getTable(), now);
wal.append(htd, hri, logkey, walEdit, region.getSequenceId(), true, null);
if (!this.noSync) {
if (++lastSync >= this.syncInterval) {
wal.sync();
lastSync = 0;
}
}
latencyHistogram.update(System.nanoTime() - now);
} finally {
loopScope.close();
}
}
long totalTime = (System.currentTimeMillis() - startTime);
logBenchmarkResult(Thread.currentThread().getName(), numIterations, totalTime);
} catch (Exception e) {
LOG.error(getClass().getSimpleName() + " Thread failed", e);
} finally {
threadScope.close();
}
}