Details

    • Type: Sub-task Sub-task
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: datanode, hdfs-client, namenode
    • Labels:
      None

      Description

      Datanode should send the Block Reports and Block Received commands to both Active and Standby Namenodes. It substantially reduces the time for Standby to take over as Active and enhances the service availability.

        Issue Links

          Activity

          Justin Joseph created issue -
          Justin Joseph made changes -
          Field Original Value New Value
          Component/s data-node [ 12312927 ]
          Component/s hdfs client [ 12312928 ]
          Component/s name-node [ 12312926 ]
          Hide
          Justin Joseph added a comment -

          Datanodes sending the information about new blocks to Standby Namenode at the earliest is a key factor in deciding the SLAs for service availability. When Standby Namenode is asked to switch to Active, if it lacks information on many blocks, it will remain in safemode until it receives them from Datanodes, may be through Block Reports.

          Show
          Justin Joseph added a comment - Datanodes sending the information about new blocks to Standby Namenode at the earliest is a key factor in deciding the SLAs for service availability. When Standby Namenode is asked to switch to Active, if it lacks information on many blocks, it will remain in safemode until it receives them from Datanodes, may be through Block Reports.
          Hide
          Konstantin Shvachko added a comment -

          Did you see the HA design that addresses this issue, say in HDFS-2064?

          Show
          Konstantin Shvachko added a comment - Did you see the HA design that addresses this issue, say in HDFS-2064 ?
          Hide
          Uma Maheswara Rao G added a comment -

          This is also addressed by HDFS-1971

          Show
          Uma Maheswara Rao G added a comment - This is also addressed by HDFS-1971
          Uma Maheswara Rao G made changes -
          Link This issue duplicates HDFS-1971 [ HDFS-1971 ]
          Uma Maheswara Rao G made changes -
          Status Open [ 1 ] Resolved [ 5 ]
          Resolution Duplicate [ 3 ]
          Transition Time In Source Status Execution Times Last Executer Last Execution Date
          Open Open Resolved Resolved
          583d 22h 59m 1 Uma Maheswara Rao G 22/Feb/13 11:09

            People

            • Assignee:
              Unassigned
              Reporter:
              Justin Joseph
            • Votes:
              0 Vote for this issue
              Watchers:
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              Dates

              • Created:
                Updated:
                Resolved:

                Development