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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-1888) WALog entries not properly deleted after recover during upgrade 1.5 -> 1.6
Date Wed, 13 Nov 2013 15:25:56 GMT
Eric Newton created ACCUMULO-1888:
-------------------------------------

             Summary: WALog entries not properly deleted after recover during upgrade 1.5
-> 1.6
                 Key: ACCUMULO-1888
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1888
             Project: Accumulo
          Issue Type: Sub-task
          Components: tserver
            Reporter: Eric Newton
            Assignee: Eric Newton
            Priority: Blocker
             Fix For: 1.6.0


While investigating ACCUMULO-1831, I got close consistency check failures:

{noformat}
2013-11-13 09:47:43,797 [tserver.Tablet] ERROR: Closed tablet 2;row_0000020000< has walog
entries in !METADATA [2;row_0000020000; da20ecd9-2e3d-4165-ae49-351b56178b2f (12)]
{noformat}

Examining the WALog for !METADATA updates to this tablet, I see the walog entry being deleted:

{noformat}
MANY_MUTATIONS 4 5
1 mutations:
  2;row_0000020000
      file:hdfs://hostname:9000/accumulo/tables/2/t-0000003/F000008v.rf [system]:73 [] 863869,20001
      srv:time [system]:73 [] M0
      last:141e12559a3ffc2 [system]:73 [] localhost:9997
      log:127.0.0.1:9997/127.0.0.1+9997/da20ecd9-2e3d-4165-ae49-351b56178b2f [system]:73 []
<deleted>
      log:127.0.0.1+9997/da20ecd9-2e3d-4165-ae49-351b56178b2f
      log:localhost:9997/hdfs://hostname:9000/accumulo/wal/localhost+9997/48f53ae2-2b54-4309-88c7-003c723dcd0e
[system]:73 [] <deleted>
      srv:flush [system]:73 [] 0
      srv:lock [system]:73 [] tservers/localhost:9997/zlock-0000000000$141e12559a3ffc2
{noformat}

The metadata table contained the key:
{noformat}
2;row_0000020000 log:127.0.0.1+9997/da20ecd9-2e3d-4165-ae49-351b56178b2f
{noformat}
But this key was used to remove it:

{noformat}
2;row_0000020000 log:127.0.0.1:9997/127.0.0.1+9997/da20ecd9-2e3d-4165-ae49-351b56178b2f
{noformat}




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