Ashu Pachauri created HBASE-16081:
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Summary: Replication remove_peer gets stuck and blocks WAL rolling
Key: HBASE-16081
URL: https://issues.apache.org/jira/browse/HBASE-16081
Project: HBase
Issue Type: Bug
Components: regionserver, Replication
Reporter: Ashu Pachauri
Assignee: Ashu Pachauri
We use a blocking take from CompletionService in
HBaseInterClusterReplicationEndpoint. When we remove a peer, we try to shut
down all threads gracefully. But, under certain race condition, the underlying
executor gets shutdown and the CompletionService#take will block forever, which
means the remove_peer call will never gracefully finish.
Since ReplicationSourceManager#removePeer and
ReplicationSourceManager#recordLog lock on the same object, we are not able to
roll WALs in such a situation and will end up with gigantic WALs.
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