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https://issues.apache.org/jira/browse/HBASE-14512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-14512:
-----------------------------------
Attachment: HBASE-14512-addendum-0.98.patch
Addendum adds a null check for 'connection' when constructing a RpcServer#Call.
Patch based on 0.98 but the change is the same everywhere.
> Cache UGI groups
> ----------------
>
> Key: HBASE-14512
> URL: https://issues.apache.org/jira/browse/HBASE-14512
> Project: HBase
> Issue Type: Bug
> Components: Performance, security
> Affects Versions: 1.2.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Fix For: 2.0.0, 1.2.0, 1.3.0, 0.98.17
>
> Attachments: HBASE-14512-addendum-0.98.patch, HBASE-14512-v1.patch,
> HBASE-14512-v2.patch, HBASE-14512-v3.patch, HBASE-14512-v4.patch,
> HBASE-14512.patch
>
>
> Right now every call gets a new User object.
> We should keep the same user for the life of a connection. We should also
> cache the group names. However we can't cache the groups for forever as that
> would mean groups don't get refreshed every 5 mins.
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