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https://issues.apache.org/jira/browse/HBASE-7725?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesse Yates updated HBASE-7725:
-------------------------------
Attachment: hbase-7725_0.94-v3.patch
Attaching patch for 0.94 based on the trunk version. TestCompaction and the
above tests seem to pass locally.
I'd like to commit on Wednesday (3/27) unless there are objections.
> Add ability to create custom compaction request
> -----------------------------------------------
>
> Key: HBASE-7725
> URL: https://issues.apache.org/jira/browse/HBASE-7725
> Project: HBase
> Issue Type: Bug
> Components: Compaction, Coprocessors, regionserver
> Reporter: Jesse Yates
> Assignee: Jesse Yates
> Fix For: 0.96.0, 0.94.6
>
> Attachments: example.java, hbase-7725_0.94-v0.patch,
> hbase-7725_0.94-v3.patch, hbase-7725-addenum.patch,
> hbase-7725-addenum-v1.patch, hbase-7725-v0.patch, hbase-7725-v1.patch,
> hbase-7725-v3.patch, hbase-7725-v4.patch, hbase-7725-v5.patch,
> hbase-7725-v6.patch, hbase-7725_with-attributes-0.94-v0.patch,
> hbase-7725_with-attributes-0.94-v1.patch
>
>
> You can request that a compaction be started, but you can't be sure when that
> compaction request completes. This is a simple update to the
> CompactionRequest interface and the compact-split thread on the RS that
> doesn't actually impact the RS exposed interface.
> This is particularly useful for CPs so they can control starting/running a
> compaction.
> *Update - Better description (3/20/13):*
> Enable coprocessors to submit custom compaction requests.
> This compaction request is used (if not null) through the entire compaction
> process. If no custom compaction request is submitted (its null - the normal
> case) then we we build a new compaction request via the usual mechanisms in
> the Store.
> Adding this mechanism is particularly useful when 'special' compactions are
> desired and you want to do things like: only change certain files for a
> particularly requested compaction or follow a single compaction through the
> queue.
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