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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4120) Add a new "-skipSharedEditsCheck" option for BootstrapStandby
Date Sun, 02 Feb 2014 10:30:10 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888888#comment-13888888
] 

Uma Maheswara Rao G commented on HDFS-4120:
-------------------------------------------

Thanks Liang for the patch!. Would it possible for to add a test case for the scenario what
you mentioned?

> Add a new "-skipSharedEditsCheck" option for BootstrapStandby
> -------------------------------------------------------------
>
>                 Key: HDFS-4120
>                 URL: https://issues.apache.org/jira/browse/HDFS-4120
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: ha, namenode
>    Affects Versions: 3.0.0, 2.0.2-alpha
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>            Priority: Minor
>         Attachments: HDFS-4120.txt
>
>
> Per https://issues.apache.org/jira/browse/HDFS-3752?focusedCommentId=13449466&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13449466
, let's introduce a new option, it should be very safe, but really useful for some corner
case.  e.g. when SNN losts local storage, we need to reset SNN, but in current trunk, it'll
always get a FATAL msg and could never be successful.     Another workaroud for this case,
is full-sync the "current" directory from ANN, but it'll be cost more disk-space & net
bandwidth, IMHO.



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