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Posted to dev@phoenix.apache.org by "Samarth (JIRA)" <ji...@apache.org> on 2014/02/27 03:45:24 UTC
[jira] [Commented] (PHOENIX-79) Change the way QueryServices is
initialized to make initialization more performant
[ https://issues.apache.org/jira/browse/PHOENIX-79?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13913977#comment-13913977 ]
Samarth commented on PHOENIX-79:
--------------------------------
Fixed the lazy init DCL issue. Changed exception throwing slightly as James suggested in ConnectionQueryServicesImpl#getTable
> Change the way QueryServices is initialized to make initialization more performant
> ----------------------------------------------------------------------------------
>
> Key: PHOENIX-79
> URL: https://issues.apache.org/jira/browse/PHOENIX-79
> Project: Phoenix
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: Samarth
> Assignee: Samarth
> Attachments: dcl_exception_columnsize.diff, patch-79-80-v2.diff
>
>
> PhoenixDriver#getQueryServices() currently has a synchronized for guarding the lazy initialization of queryServices. Changing it to double-checked-locking pattern should make it more perfomant when connections are requested concurrently.
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