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https://issues.apache.org/jira/browse/BLUR-249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron McCurry closed BLUR-249.
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Resolution: Fixed
https://git-wip-us.apache.org/repos/asf?p=incubator-blur.git;a=commit;h=bbaf016bfbb2296e4d2787e44340a62ffdbae153
https://git-wip-us.apache.org/repos/asf?p=incubator-blur.git;a=commit;h=f40889af2e77868090a53b677c818fb1ab546bf6
> Sync performance issue in the IndexInputCloser class
> ----------------------------------------------------
>
> Key: BLUR-249
> URL: https://issues.apache.org/jira/browse/BLUR-249
> Project: Apache Blur
> Issue Type: Improvement
> Components: Blur
> Affects Versions: 0.3.0, 0.2.1
> Reporter: Aaron McCurry
> Fix For: 0.3.0, 0.2.1
>
>
> While running some load tests on a medium sized cluster I noticed a lot of
> blocked state on the index-manager threads. These threads are used during
> the parallel search. Upon inspection of a thread dump I noticed that all the
> blocked state threads were blocking on line 67 in the IndexInputCloser class.
> This is to synchronize on a collection addition because the implementation
> is a HashSet.
> This task is to change the refs field to be a concurrenthashmap using the
> Collections.newSetFromMap() method.
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