private void initialize(Map<HRegionLocation, FlushWorker> serverToFlushWorkerMap) {
if (serverToFlushWorkerMap == null) {
return;
}
long averageCalcSum = 0;
int averageCalcCount = 0;
for (Map.Entry<HRegionLocation, FlushWorker> entry : serverToFlushWorkerMap.entrySet()) {
HRegionLocation addr = entry.getKey();
FlushWorker worker = entry.getValue();
long bufferedCounter = worker.getTotalBufferedCount();
long failedCounter = worker.getTotalFailedCount();
long serverMaxLatency = worker.getMaxLatency();
AtomicAverageCounter averageCounter = worker.getAverageLatencyCounter();
// Get sum and count pieces separately to compute overall average
SimpleEntry<Long, Integer> averageComponents = averageCounter.getComponents();
long serverAvgLatency = averageCounter.getAndReset();
this.totalBufferedPutCounter += bufferedCounter;
this.totalFailedPutCounter += failedCounter;
if (serverMaxLatency > this.maxLatency) {
this.maxLatency = serverMaxLatency;
}
averageCalcSum += averageComponents.getKey();
averageCalcCount += averageComponents.getValue();
this.serverToBufferedCounterMap.put(addr.getHostnamePort(), bufferedCounter);
this.serverToFailedCounterMap.put(addr.getHostnamePort(), failedCounter);
this.serverToAverageLatencyMap.put(addr.getHostnamePort(), serverAvgLatency);
this.serverToMaxLatencyMap.put(addr.getHostnamePort(), serverMaxLatency);
}
this.overallAverageLatency = averageCalcCount != 0 ? averageCalcSum / averageCalcCount : 0;
}
@Override
public void run() {
int failedCount = 0;
try {
long start = EnvironmentEdgeManager.currentTime();
// drain all the queued puts into the tmp list
processingList.clear();
queue.drainTo(processingList);
if (processingList.size() == 0) {
// Nothing to flush
return;
}
currentProcessingCount.set(processingList.size());
// failedCount is decreased whenever a Put is success or resubmit.
failedCount = processingList.size();
List<Action<Row>> retainedActions = new ArrayList<>(processingList.size());
MultiAction<Row> actions = new MultiAction<>();
for (int i = 0; i < processingList.size(); i++) {
PutStatus putStatus = processingList.get(i);
Action<Row> action = new Action<Row>(putStatus.put, i);
actions.add(putStatus.regionInfo.getRegionName(), action);
retainedActions.add(action);
}
// Process this multi-put request
List<PutStatus> failed = null;
Object[] results = new Object[actions.size()];
ServerName server = addr.getServerName();
Map<ServerName, MultiAction<Row>> actionsByServer =
Collections.singletonMap(server, actions);
try {
AsyncRequestFuture arf =
ap.submitMultiActions(
null,
retainedActions,
0L,
null,
results,
true,
null,
null,
actionsByServer,
null);
arf.waitUntilDone();
if (arf.hasError()) {
// We just log and ignore the exception here since failed Puts will be resubmit again.
LOG.debug(
"Caught some exceptions when flushing puts to region server "
+ addr.getHostnamePort(),
arf.getErrors());
}
} finally {
for (int i = 0; i < results.length; i++) {
if (results[i] instanceof Result) {
failedCount--;
} else {
if (failed == null) {
failed = new ArrayList<PutStatus>();
}
failed.add(processingList.get(i));
}
}
}
if (failed != null) {
// Resubmit failed puts
for (PutStatus putStatus : failed) {
if (resubmitFailedPut(putStatus, this.addr)) {
failedCount--;
}
}
}
long elapsed = EnvironmentEdgeManager.currentTime() - start;
// Update latency counters
averageLatency.add(elapsed);
if (elapsed > maxLatency.get()) {
maxLatency.set(elapsed);
}
// Log some basic info
if (LOG.isDebugEnabled()) {
LOG.debug(
"Processed "
+ currentProcessingCount
+ " put requests for "
+ addr.getHostnamePort()
+ " and "
+ failedCount
+ " failed"
+ ", latency for this send: "
+ elapsed);
}
// Reset the current processing put count
currentProcessingCount.set(0);
} catch (RuntimeException e) {
// To make findbugs happy
// Log all the exceptions and move on
LOG.debug(
"Caught some exceptions "
+ e
+ " when flushing puts to region server "
+ addr.getHostnamePort(),
e);
} catch (Exception e) {
if (e instanceof InterruptedException) {
Thread.currentThread().interrupt();
}
// Log all the exceptions and move on
LOG.debug(
"Caught some exceptions "
+ e
+ " when flushing puts to region server "
+ addr.getHostnamePort(),
e);
} finally {
// Update the totalFailedCount
this.totalFailedPutCount.addAndGet(failedCount);
}
}
