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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12103) Backport HFileV1Detector to 0.94
Date Fri, 26 Sep 2014 19:18:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14149830#comment-14149830
] 

stack commented on HBASE-12103:
-------------------------------

+1

Needs a release note.  I added to our 1.0 issue that we need to doc this tool is still available.

> Backport HFileV1Detector to 0.94
> --------------------------------
>
>                 Key: HBASE-12103
>                 URL: https://issues.apache.org/jira/browse/HBASE-12103
>             Project: HBase
>          Issue Type: Task
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>         Attachments: HBASE-12103.patch
>
>
> The reason of back porting is that 0.96+ HBase doesn't support HFileV1 format anymore.
While HFileV1Detector in 0.96+, which is supposed to check v1 hfile before upgrade, can't
talk to pre 0.96 cluster because underlying hadoop doesn't compatible either due to protocol
buffer version bump.
> After the back port, a user can just download the latest 0.94 HBase tar ball in a machine,
point its config to a 0.94 cluster to check v1 file existance by running following command:
> {code}
> ./bin/hbase org.apache.hadoop.hbase.util.HFileV1Detector -p <hbase root data path>
> {code}



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