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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12612) WALFactory use in upgrade path must clean up properly
Date Tue, 02 Dec 2014 17:10:12 GMT
Sean Busbey created HBASE-12612:

             Summary: WALFactory use in upgrade path must clean up properly
                 Key: HBASE-12612
                 URL: https://issues.apache.org/jira/browse/HBASE-12612
             Project: HBase
          Issue Type: Bug
          Components: wal
    Affects Versions: 2.0.0
            Reporter: Sean Busbey
            Assignee: Sean Busbey
            Priority: Blocker
             Fix For: 2.0.0

The namespace upgrade code from pre-0.96 requires a clean shutdown prior to run. Right now
the NamespaceUpgrade code does the following

# instantiate wal factory
# ask for a meta-wal
# online meta and make changes
# clean up meta-wal

That last bit is done instead of closing the factory itself. Since the factory initializes
a non-meta-wal as a part of its constructor, not closing it leaves behind an empty wal. The
rest of hte upgrade process sees that empty wal as an indicator that there's been a failure
and goes into recovery.

The recovery process skips the loading of the hbase:acl table, which then causes the upgrade
after master initialization to fail.

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