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https://issues.apache.org/jira/browse/HBASE-14511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Rodionov updated HBASE-14511:
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    Status: Patch Available  (was: Open)

> StoreFile.Writer Meta Plugin
> ----------------------------
>
>                 Key: HBASE-14511
>                 URL: https://issues.apache.org/jira/browse/HBASE-14511
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>         Attachments: HBASE-14511-v3.patch, HBASE-14511-v4.patch, 
> HBASE-14511.v1.patch, HBASE-14511.v2.patch
>
>
> During my work on a new compaction policies (HBASE-14468, HBASE-14477) I had 
> to modify the existing code of a StoreFile.Writer to add additional meta-info 
> required by these new  policies. I think that it should be done by means of a 
> new Plugin framework, because this seems to be a general capability/feature. 
> As a future enhancement this can become a part of a more general 
> StoreFileWriter/Reader plugin architecture. But I need only Meta section of a 
> store file.
> This could be used, for example, to collect rowkeys distribution information 
> during hfile creation. This info can be used later to find the optimal region 
> split key or to create optimal set of sub-regions for M/R jobs or other jobs 
> which can operate on a sub-region level.



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