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https://issues.apache.org/jira/browse/HBASE-11290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14249086#comment-14249086
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Andrew Purtell commented on HBASE-11290:
----------------------------------------
The new LockCache in the v2 patch is reminiscent of HFile's IdLock. Can this be
refactored so those places share common code?
(There's RowLock in HRegion also, but that would be significantly more work,
maybe a future time.)
> Unlock RegionStates
> -------------------
>
> Key: HBASE-11290
> URL: https://issues.apache.org/jira/browse/HBASE-11290
> Project: HBase
> Issue Type: Sub-task
> Reporter: Francis Liu
> Assignee: Virag Kothari
> Fix For: 1.0.0, 2.0.0, 0.98.10
>
> Attachments: HBASE-11290-0.98.patch, HBASE-11290-0.98_v2.patch,
> HBASE-11290.draft.patch
>
>
> Even though RegionStates is a highly accessed data structure in HMaster. Most
> of it's methods are synchronized. Which limits concurrency. Even simply
> making some of the getters non-synchronized by using concurrent data
> structures has helped with region assignments. We can go as simple as this
> approach or create locks per region or a bucket lock per region bucket.
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