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  1. Ambari
  2. AMBARI-17951

Introduce validation of hostgroup mapping for active/standby namenode

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: trunk
    • Fix Version/s: trunk
    • Component/s: ambari-server, blueprints
    • Labels:
      None

      Description

      Ambari allows user to specify following properties when Namenode HA is enabled, but does not validate for correct mapping.

      "dfs_ha_initial_namenode_active" : "hostname or hostgroup reference",
      "dfs_ha_initial_namenode_standby" : "hostname or hostgroup referenceā€

      If the values for above properties are mentioned incorrectly following exception is thrown and NAMENODE fails to start.

      2016-07-27 18:54:43,522 WARN namenode.FSNamesystem (FSNamesystem.java:loadFromDisk(692)) - Encountered exception loading fsimage
      java.io.IOException: NameNode is not formatted.
      at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:225)
      at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1015)
      at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:690)
      at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:688)
      at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:752)
      at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:992)
      at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:976)
      at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1686)
      at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1754)

        Attachments

        1. AMBARI-17951-v2
          22 kB
          Amruta Borkar
        2. AMBARI-17951-v3.patch
          24 kB
          Amruta Borkar
        3. AMBARI-17951-v4.patch
          24 kB
          Amruta Borkar

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              • Assignee:
                arborkar Amruta Borkar
                Reporter:
                arborkar Amruta Borkar
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                Dates

                • Created:
                  Updated:
                  Resolved: