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  1. HBase
  2. HBASE-14861

HBASE_ZNODE_FILE on master server is overwritten by regionserver process in case of master-rs collocation

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0
    • Fix Version/s: 2.0.0
    • Component/s: Operability
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      In case of master-rs collocation HBASE_ZNODE_FILE is overwritten by regionserver process in HRegionServer#handleReportForDutyResponse() here is how it looks on master server:

      [hbase@hnode2 hbase]$ cat hbase-hbase-master.znode 
      /hbase/rs/hnode2,16000,1448022074888
      

      it contains regionserver znode path instead of String value of master's ServerName. This affects ZNodeClearer#clear() in way that will not clear master znode in case we detect master crash. At end this will extend failover time until master znode expires configured in zookeeper by maxSessionTimeout parameter (40s in my case).
      I have notice this on mater branch but it can be case in other branches where we are collocating master and rs.

        Attachments

        1. HBASE-14861.patch
          4 kB
          Samir Ahmic
        2. HBASE-14861v2.patch
          5 kB
          Samir Ahmic
        3. HBASE-14861v3.patch
          4 kB
          Samir Ahmic

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              • Assignee:
                asamir Samir Ahmic
                Reporter:
                asamir Samir Ahmic
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                • Created:
                  Updated:
                  Resolved: