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From "Jonathan Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8352) Rename '.snapshot' directory
Date Tue, 16 Apr 2013 17:17:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13633024#comment-13633024
] 

Jonathan Hsieh commented on HBASE-8352:
---------------------------------------

bq. You want doc and release notes? Or is either sufficient?

Good release notes is sufficient.  We'll get it done here.

bq.  Is there any way to make rolling upgrades work? Even making the snapshot dir configurable
would not allow for that.

I was thinking we need a "version lock" or "upgrade lock" to block certain operations while
rolling upgrades or rolling restarts for config changes are happening.  Out of scope here
though.


                
> Rename '.snapshot' directory
> ----------------------------
>
>                 Key: HBASE-8352
>                 URL: https://issues.apache.org/jira/browse/HBASE-8352
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Critical
>             Fix For: 0.98.0, 0.94.7, 0.95.1
>
>         Attachments: 8352-0.94-v1.txt, 8352-trunk.txt
>
>
> Testing HBase Snapshot on top of Hadoop's Snapshot branch (http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/),
we found that both features used '.snapshot' directory to store metadata.
> HDFS (built from HDFS-2802 branch) doesn't allow paths with .snapshot as a component
> From discussion on dev@hbase.apache.org, (see http://search-hadoop.com/m/kY6C3cXMs51),
consensus was to rename '.snapshot' directory in HBase so that both features can co-exist
smoothly.

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