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https://issues.apache.org/jira/browse/HBASE-12740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14260480#comment-14260480
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Dima Spivak commented on HBASE-12740:
-------------------------------------
Hey [~jurmous],
Sorry for the delay in getting back to this; busy time with the holidays. I
finally had a chance to apply your patch to master (thanks again for rebasing
for me) and, having run it a half dozen times, I can't seem to reproduce the
speed-up you're seeing on TestHBaseFsck. Running Maven 3.0.4 and Java 1.7u67, I
get averaged runtimes of about 277 s before the patch is applied and 287 s
afterwards. Am I missing something?
> Improve performance of TestHBaseFsck
> ------------------------------------
>
> Key: HBASE-12740
> URL: https://issues.apache.org/jira/browse/HBASE-12740
> Project: HBase
> Issue Type: Bug
> Components: util
> Reporter: Jurriaan Mous
> Assignee: Jurriaan Mous
> Attachments: HBASE-12740-v1.patch, HBASE-12740-v2.patch,
> HBASE-12740-v3.patch, HBASE-12740.patch
>
>
> TestHBaseFsck performs poor on my machine. It crashes because the threads
> reach the 2000 thread limit on my machine. Looking at the code a lot of
> optimization is possible and some API calls are used wrong. A lot of Admin
> instances are created and never closed, lots of Tables are not closed,
> ThreadPoolExecutors are not shut down and an unlimited thread pool which does
> not recycle threads.
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