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https://issues.apache.org/jira/browse/HBASE-14629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14960887#comment-14960887
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Ashish Singhi commented on HBASE-14629:
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The first thought that stuck to me while looking into the code was that why we
add log in ZK during preLogRoll and and in queue during postLogRoll. But
ignored at that time thinking there might be some reason which I may not be
able to find out at that moment.
> Create replication zk node in postLogRoll instead of preLogRoll
> ---------------------------------------------------------------
>
> Key: HBASE-14629
> URL: https://issues.apache.org/jira/browse/HBASE-14629
> Project: HBase
> Issue Type: Improvement
> Components: Replication
> Reporter: He Liangliang
>
> Currently the hlog zk node is added before creating the log file, so it's
> possible to raise FileNotFoundException if the server crash between these tow
> operations. Move this step after file creating can avoid this exception (then
> FNFE will be certainly treated as an error). If there is an crash after log
> creation before creating the zk node, the log will be replayed and there
> should be no data loss either.
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