Hudson commented on HBASE-5604:

Integrated in HBase-TRUNK-security #169 (See 
    HBASE-5604 addendum, mark TestWALPlayer as LargeTest (Revision 1325609)
HBASE-5604 M/R tool to replay WAL files (Revision 1325555)

     Result = FAILURE
larsh : 
Files : 

larsh : 
Files : 
* /hbase/trunk/src/docbkx/ops_mgt.xml
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/mapreduce/WALPlayer.java

> M/R tool to replay WAL files
> ----------------------------
>                 Key: HBASE-5604
>                 URL: https://issues.apache.org/jira/browse/HBASE-5604
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.94.0, 0.96.0
>         Attachments: 5604-v10.txt, 5604-v11.txt, 5604-v4.txt, 5604-v6.txt, 
> 5604-v7.txt, 5604-v8.txt, 5604-v9.txt, HLog-5604-v3.txt
> Just an idea I had. Might be useful for restore of a backup using the HLogs.
> This could an M/R (with a mapper per HLog file).
> The tool would get a timerange and a (set of) table(s). We'd pick the right 
> HLogs based on time before the M/R job is started and then have a mapper per 
> HLog file.
> The mapper would then go through the HLog, filter all WALEdits that didn't 
> fit into the time range or are not any of the tables and then uses 
> HFileOutputFormat to generate HFiles.
> Would need to indicate the splits we want, probably from a live table.

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