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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16081) Replication remove_peer gets stuck and blocks WAL rolling
Date Tue, 05 Jul 2016 20:16:11 GMT

     [ https://issues.apache.org/jira/browse/HBASE-16081?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Elliott Clark updated HBASE-16081:
    Priority: Critical  (was: Major)

> 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: Joseph
>            Priority: Critical
>         Attachments: HBASE-16081.patch
> 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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