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  1. HBase
  2. HBASE-7382

Port ZK.multi support from HBASE-6775 to 0.96

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.95.0
    • Component/s: Zookeeper
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
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      hbase.zookeeper.useMulti

      Instructs HBase to make use of ZooKeeper's multi-update functionality.
          This allows certain ZooKeeper operations to complete more quickly and prevents some issues
          with rare Replication failure scenarios (see the release note of HBASE-2611 for an example).
          IMPORTANT: only set this to true if all ZooKeeper servers in the cluster are on version 3.4+
          and will not be downgraded. ZooKeeper versions before 3.4 do not support multi-update and will
          not fail gracefully if multi-update is invoked (see ZOOKEEPER-1495).
      Show
      hbase.zookeeper.useMulti Instructs HBase to make use of ZooKeeper's multi-update functionality.     This allows certain ZooKeeper operations to complete more quickly and prevents some issues     with rare Replication failure scenarios (see the release note of HBASE-2611 for an example).     IMPORTANT: only set this to true if all ZooKeeper servers in the cluster are on version 3.4+     and will not be downgraded. ZooKeeper versions before 3.4 do not support multi-update and will     not fail gracefully if multi-update is invoked (see ZOOKEEPER-1495 ).

      Description

      HBASE-6775 adds support for ZK.multi ZKUtil and uses it for the 0.92/0.94 compatibility fix implemented in HBASE-6710.

      ZK.multi support is most likely useful in 0.96, but since HBASE-6710 is not relevant for 0.96, perhaps we should find another use case first before we port.

        Attachments

        1. 7382-trunk-v6.txt
          30 kB
          Ted Yu
        2. 7382-trunk-v5.txt
          30 kB
          Ted Yu
        3. 7382-trunk-v4.txt
          30 kB
          Ted Yu
        4. 7382-trunk-v3.txt
          30 kB
          Ted Yu
        5. HBASE-7382-trunk.patch
          29 kB
          Himanshu Vashishtha

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              • Assignee:
                v.himanshu Himanshu Vashishtha
                Reporter:
                gchanan Gregory Chanan
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                • Created:
                  Updated:
                  Resolved: