Details

    • Type: Sub-task Sub-task
    • Status: Resolved
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.6.0
    • Component/s: tserver
    • Labels:
      None

      Description

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

      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)]
      

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

      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
      

      The metadata table contained the key:

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

      But this key was used to remove it:

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

        Activity

        Hide
        ASF subversion and git services added a comment -

        Commit 0e63755d5e3a9e441bae51d2f28402a3768820dc in branch refs/heads/1.6.0-SNAPSHOT from Eric Newton
        [ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=0e63755 ]

        ACCUMULO-1831 ACCUMULO-1888 use uuids to confirm WALog GC; remove WALog entries in the !METADATA table with the correct mutation

        Show
        ASF subversion and git services added a comment - Commit 0e63755d5e3a9e441bae51d2f28402a3768820dc in branch refs/heads/1.6.0-SNAPSHOT from Eric Newton [ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=0e63755 ] ACCUMULO-1831 ACCUMULO-1888 use uuids to confirm WALog GC; remove WALog entries in the !METADATA table with the correct mutation
        Hide
        ASF subversion and git services added a comment -

        Commit 0e63755d5e3a9e441bae51d2f28402a3768820dc in branch refs/heads/master from Eric Newton
        [ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=0e63755 ]

        ACCUMULO-1831 ACCUMULO-1888 use uuids to confirm WALog GC; remove WALog entries in the !METADATA table with the correct mutation

        Show
        ASF subversion and git services added a comment - Commit 0e63755d5e3a9e441bae51d2f28402a3768820dc in branch refs/heads/master from Eric Newton [ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=0e63755 ] ACCUMULO-1831 ACCUMULO-1888 use uuids to confirm WALog GC; remove WALog entries in the !METADATA table with the correct mutation

          People

          • Assignee:
            Eric Newton
            Reporter:
            Eric Newton
          • Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development