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Posted to dev@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2014/04/29 23:19:15 UTC

[jira] [Resolved] (HBASE-6186) Assure thread safety

     [ https://issues.apache.org/jira/browse/HBASE-6186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell resolved HBASE-6186.
-----------------------------------

    Resolution: Invalid

> Assure thread safety
> --------------------
>
>                 Key: HBASE-6186
>                 URL: https://issues.apache.org/jira/browse/HBASE-6186
>             Project: HBase
>          Issue Type: Sub-task
>          Components: security
>    Affects Versions: 0.94.0, 0.94.1, 0.95.2
>            Reporter: Andrew Purtell
>              Labels: security
>
> Check data structures for necessary thread safety.
> One known issue is as follows:
> In TableAuthManager, we need to deal with concurrent grants and revokes now that ADMIN permission can be delegated to perhaps multiple users.
> Consider using a ReadWriteLock to protect for update. The current data structure is an array multimap. It is also possible to obtain a synchronized multimap from Guava with Multimaps#synchronizedListMultimap but by far the most common access is read access, and concurrent read access is fine.



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