public CompactionRunner(
Store store, HRegion region, CompactionContext compaction, ThreadPoolExecutor parent) {
super();
this.store = store;
this.region = region;
this.compaction = compaction;
this.queuedPriority =
(this.compaction == null)
? store.getCompactPriority()
: compaction.getRequest().getPriority();
this.parent = parent;
}
@Override
public void run() {
Preconditions.checkNotNull(server);
if (server.isStopped()
|| (region.getTableDesc() != null && !region.getTableDesc().isCompactionEnabled())) {
return;
}
// Common case - system compaction without a file selection. Select now.
if (this.compaction == null) {
int oldPriority = this.queuedPriority;
this.queuedPriority = this.store.getCompactPriority();
if (this.queuedPriority > oldPriority) {
// Store priority decreased while we were in queue (due to some other compaction?),
// requeue with new priority to avoid blocking potential higher priorities.
this.parent.execute(this);
return;
}
try {
this.compaction = selectCompaction(this.region, this.store, queuedPriority, null);
} catch (IOException ex) {
LOG.error("Compaction selection failed " + this, ex);
server.checkFileSystem();
return;
}
if (this.compaction == null) return; // nothing to do
// Now see if we are in correct pool for the size; if not, go to the correct one.
// We might end up waiting for a while, so cancel the selection.
assert this.compaction.hasSelection();
ThreadPoolExecutor pool =
store.throttleCompaction(compaction.getRequest().getSize())
? longCompactions
: shortCompactions;
if (this.parent != pool) {
this.store.cancelRequestedCompaction(this.compaction);
this.compaction = null;
this.parent = pool;
this.parent.execute(this);
return;
}
}
// Finally we can compact something.
assert this.compaction != null;
this.compaction.getRequest().beforeExecute();
try {
// Note: please don't put single-compaction logic here;
// put it into region/store/etc. This is CST logic.
long start = EnvironmentEdgeManager.currentTime();
boolean completed = region.compact(compaction, store);
long now = EnvironmentEdgeManager.currentTime();
LOG.info(
((completed) ? "Completed" : "Aborted")
+ " compaction: "
+ this
+ "; duration="
+ StringUtils.formatTimeDiff(now, start));
if (completed) {
// degenerate case: blocked regions require recursive enqueues
if (store.getCompactPriority() <= 0) {
requestSystemCompaction(region, store, "Recursive enqueue");
} else {
// see if the compaction has caused us to exceed max region size
requestSplit(region);
}
}
} catch (IOException ex) {
IOException remoteEx =
ex instanceof RemoteException ? ((RemoteException) ex).unwrapRemoteException() : ex;
LOG.error("Compaction failed " + this, remoteEx);
if (remoteEx != ex) {
LOG.info("Compaction failed at original callstack: " + formatStackTrace(ex));
}
server.checkFileSystem();
} catch (Exception ex) {
LOG.error("Compaction failed " + this, ex);
server.checkFileSystem();
} finally {
LOG.debug("CompactSplitThread Status: " + CompactSplitThread.this);
}
this.compaction.getRequest().afterExecute();
}
