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From "Jonathan Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5892) [hbck] Refactor parallel WorkItem* to Futures.
Date Fri, 25 May 2012 13:18:23 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13283369#comment-13283369
] 

Jonathan Hsieh commented on HBASE-5892:
---------------------------------------

Andrew, looks good.  I'm going to wait for the hadoopqa robot to execute the test suite. 
Alternately, since this just modifies hbck, can you try this command and share results: 'mvn
test -PlocalTests -Dtest=TestHbaseFsck'?

I'd like to keep all hbck across versions essentially the same -- would you be willing to
port to 0.90/0.92/0.94?  I'd bet that this may apply to 0.94 and 0.92, and that 0.90 would
require some near trivial tweaks. 

                
> [hbck] Refactor parallel WorkItem* to Futures.
> ----------------------------------------------
>
>                 Key: HBASE-5892
>                 URL: https://issues.apache.org/jira/browse/HBASE-5892
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jonathan Hsieh
>            Assignee: Andrew Wang
>              Labels: noob
>         Attachments: hbase-5892.patch
>
>
> This would convert WorkItem* logic (with low level notifies, and rough exception handling)
 into a more canonical Futures pattern.
> Currently there are two instances of this pattern (for loading hdfs dirs, for contacting
regionservers for assignments, and soon -- for loading hdfs .regioninfo files).

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