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

["Rakesh R (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rakesh R reassigned HDFS-3752:
------------------------------

    Assignee: Rakesh R

> 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: 2.0.0-alpha
>            Reporter: Vinayakumar B
>            Assignee: Rakesh R
>         Attachments: HDFS-3752-testcase.patch
>
>
> 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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