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https://issues.apache.org/jira/browse/HBASE-6109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285821#comment-13285821
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Zhihong Yu commented on HBASE-6109:
-----------------------------------
{code}
+ // A number of lock we want to easily support. It's not a maximum.
{code}
'A number' -> 'The number'
{code}
+ // We need an atomic counter to manage the number of people using the lock
and free it when
+ // it's equals to zero.
{code}
'number of people' -> 'number of users'
'it's equals to zero.' -> 'it's equal to zero.'
{code}
+ static class RegionLock<K> extends ReentrantLock {
{code}
The outer class is generic. The inner class shouldn't mention Region.
> Improve RIT performances during assignment on large clusters
> ------------------------------------------------------------
>
> Key: HBASE-6109
> URL: https://issues.apache.org/jira/browse/HBASE-6109
> Project: HBase
> Issue Type: Improvement
> Components: master
> Affects Versions: 0.96.0
> Reporter: nkeywal
> Assignee: nkeywal
> Priority: Minor
> Fix For: 0.96.0
>
> Attachments: 6109.v19.patch, 6109.v7.patch
>
>
> The main points in this patch are:
> - lowering the number of copy of the RIT list
> - lowering the number of synchronization
> - synchronizing on a region rather than on everything
> It also contains:
> - some fixes around the RIT notification: the list was sometimes modified
> without a corresponding 'notify'.
> - some tests flakiness correction, actually unrelated to this patch.
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