Ted Yu created HBASE-9657:
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Summary: Race condition in low replication checking and
FSHLog#rollWriter()
Key: HBASE-9657
URL: https://issues.apache.org/jira/browse/HBASE-9657
Project: HBase
Issue Type: Bug
Reporter: Ted Yu
Assignee: Ted Yu
Attachments: 9657-v1.txt
In FSHLog#syncer(), we have this comment:
{code}
// TODO: preserving the old behavior for now, but this check is strange.
It's not
// protected by any locks here, so for all we know rolling locks
might start
// as soon as we enter the "if". Is this best-effort optimization
check?
if (!this.logRollRunning) {
checkLowReplication();
{code}
The implication is that checkLowReplication() may be running when
FSHLog#rollWriter() is also running.
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