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Posted to hdfs-dev@hadoop.apache.org by "Vinay (JIRA)" <ji...@apache.org> on 2012/08/02 12:09:02 UTC

[jira] [Created] (HDFS-3752) BOOTSTRAPSTANDBY for new Standby node will not work just after saveNameSpace at ANN in case of BKJM

Vinay created HDFS-3752:
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             Summary: BOOTSTRAPSTANDBY for new Standby node will not work just after saveNameSpace at ANN in case of BKJM
                 Key: HDFS-3752
                 URL: https://issues.apache.org/jira/browse/HDFS-3752
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ha
    Affects Versions: 2.1.0-alpha
            Reporter: Vinay


1. do {{saveNameSpace}} in ANN node by entering into safemode
2. in another new node, install standby NN and do BOOTSTRAPSTANDBY
3. Now StandBy NN will not able to copy the fsimage_txid from ANN

This is because, SNN not able to find the next txid (txid+1) in shared storage.
Just after {{saveNameSpace}} shared storage will have the new logsegment with only START_LOG_SEGEMENT edits op.
and BookKeeper will not be able to read last entry from inprogress ledger.

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