Duo Zhang created HBASE-17206:
---------------------------------
Summary: FSHLog may roll a new writer successfully with unflushed
entries
Key: HBASE-17206
URL: https://issues.apache.org/jira/browse/HBASE-17206
Project: HBase
Issue Type: Bug
Components: wal
Affects Versions: 2.0.0, 1.4.0
Reporter: Duo Zhang
Assignee: Duo Zhang
Priority: Critical
Fix For: 2.0.0, 1.4.0
Found it when debugging the flakey TestFailedAppendAndSync.
The problem is in waitSafePoint.
{code}
while (true) {
if (this.safePointAttainedLatch.await(1, TimeUnit.MILLISECONDS)) {
break;
}
if (syncFuture.isThrowable()) {
throw new
FailedSyncBeforeLogCloseException(syncFuture.getThrowable());
}
}
return syncFuture;
{code}
If we attach the safe point quick enough then we will bypass the
syncFuture.isThrowable check and will not throw
FailedSyncBeforeLogCloseException.
This may cause incosistency between memstore and wal.
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