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From "Benjamin Lerer (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-11743) Race condition in CommitLog.recover can prevent startup
Date Fri, 27 May 2016 09:15:13 GMT


Benjamin Lerer updated CASSANDRA-11743:
    Resolution: Fixed
        Status: Resolved  (was: Ready to Commit)

Committed into 2.2 at 6add3c9acc063005198510e9627ae9e783e54e91 and merged into 3.0, 3.7 and

> Race condition in CommitLog.recover can prevent startup
> -------------------------------------------------------
>                 Key: CASSANDRA-11743
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Lifecycle
>            Reporter: Benjamin Lerer
>            Assignee: Benjamin Lerer
>             Fix For: 2.2.x, 3.0.x, 3.x
>         Attachments: 11743-2.2.txt
> In {{CommitLog::recover}} the list of segments to recover from is determined by removing
the files managed by the {{CommitLogSegmentManager}} from the list of files present in the
commit log directory. Unfortunatly, due to the way the creation of segments is done there
is a time window where a segment file has been created but has not been added yet to the list
of segments managed by the {{CommitLogSegmentManager}}. If the filtering ocurs during that
time window the Commit log might try to recover from that new segment and crash.   

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