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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-2770) Support Local WAL Recovery in 1.6
Date Fri, 02 May 2014 18:25:14 GMT
Mike Drob created ACCUMULO-2770:
-----------------------------------

             Summary: Support Local WAL Recovery in 1.6
                 Key: ACCUMULO-2770
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2770
             Project: Accumulo
          Issue Type: Improvement
          Components: logger
    Affects Versions: 1.6.0
            Reporter: Mike Drob
            Assignee: Mike Drob


I had a user testing an upgrade from 1.4.5 to 1.6.0 (via 1.5.1) and they ended up with some
unrecoverable data.

Not all of the WALs got copied from local directories to HDFS, and this was not noticed during
the 1.4 to 1.5 upgrade (possibly due to the presence of offline tables, but we're not sure).
After continuing the upgrade to 1.6, and bringing some of the tables back online, we discovered
that we were missing WALs and could not recover them. We found them on local disks.



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