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From "Michael Wall (JIRA)" <>
Subject [jira] [Reopened] (ACCUMULO-4428) GC does not delete WAL files belonging to dead tservers
Date Thu, 01 Sep 2016 15:36:20 GMT


Michael Wall reopened ACCUMULO-4428:

Reopening so we don't forget to backport this to 1.6.6.  I can do that later this week if
you don't have time [~adamjshook].  Sorry I missed that in your initial PR.

> GC does not delete WAL files belonging to dead tservers
> -------------------------------------------------------
>                 Key: ACCUMULO-4428
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>    Affects Versions: 1.7.2
>            Reporter: Adam J Shook
>            Assignee: Adam J Shook
>            Priority: Blocker
>             Fix For: 1.6.6, 1.7.3
>          Time Spent: 4.5h
>  Remaining Estimate: 0h
> The GarbageCollectWriteAheadLogs uses a Map<HostAndPort,Long> to track when it
had first seen a dead tserver, waiting an hour before deleting the files.  However, a new
instance of this class is re-created during each run of the SimpleGarbageCollector, causing
the state of the dead tservers to be lost.  All of the WAL files belonging to a dead tserver
will never be removed.

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