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Posted to issues@ambari.apache.org by "Eric Yang (JIRA)" <ji...@apache.org> on 2017/07/31 17:27:00 UTC

[jira] [Resolved] (AMBARI-21604) HDFS upgrade does not create rollback snapshots

     [ https://issues.apache.org/jira/browse/AMBARI-21604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Yang resolved AMBARI-21604.
--------------------------------
    Resolution: Not A Problem

When "-rollingUpgrade prepare" is invoked, namenode current directory has generated fsImage_rollback_edits_id and fsImage_rollback_edits_id.md5.

{code}
-rw-r--r--. 1 hdfs hadoop  138988 Jul 31 05:11 fsimage_0000000000000023401
-rw-r--r--. 1 hdfs hadoop      62 Jul 31 05:11 fsimage_0000000000000023401.md5
-rw-r--r--. 1 hdfs hadoop  138988 Jul 31 11:11 fsimage_0000000000000024375
-rw-r--r--. 1 hdfs hadoop      62 Jul 31 11:11 fsimage_0000000000000024375.md5
-rw-r--r--. 1 hdfs hadoop   83094 Jul 28 19:31 fsimage_rollback_0000000000000008560
-rw-r--r--. 1 hdfs hadoop      71 Jul 28 19:31 fsimage_rollback_0000000000000008560.md5
{code}

Looks like I was looking at wrong directory for fsImage_rollback files.

> HDFS upgrade does not create rollback snapshots
> -----------------------------------------------
>
>                 Key: AMBARI-21604
>                 URL: https://issues.apache.org/jira/browse/AMBARI-21604
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: 2.5.2
>            Reporter: Eric Yang
>            Priority: Blocker
>             Fix For: 2.5.2
>
>         Attachments: nn_no_snapshot.png, nn.png
>
>
> Install IOP 4.2 and upgrade to Ambari 2.5.2, then run HDP in-place migration.
> Pause upgrade when Ambari prompt for finalize upgrade or finalize later.
> Check hdfs namenode and datanode directory.  There is no rollback snapshot created.



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