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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:
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Attachment: example.java
Attaching simple example file of using the finished latch on a
compactionRequest. Essentially, I want to trigger a compaction and make sure I
know when it finishes because I want to setup a special compaction policy, but
I don't know when the compaction will run or which one is running or if the one
I requested is done yet.
I had considered making "compactRegionAndBlockUntilDone" a method on
HRegionServer that we could just call, but that meant updating
RegionServerServices and slightly reworking the calls there that request
compactions to just drop the return values (keeping the async nature). So we
could move it in there, but since its a small case, I don't know if its worth
it yet :)
> Add ability to block on a compaction request for a region
> ---------------------------------------------------------
>
> 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, 0.94.5
>
> Attachments: example.java, hbase-7725_0.94-v0.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.
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