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From "Himanshu Vashishtha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9195) TestFSHDFSUtils is too aggressive
Date Thu, 15 Aug 2013 00:26:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13740482#comment-13740482
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Himanshu Vashishtha commented on HBASE-9195:
--------------------------------------------

To add more info:
The interesting bit is it fails on java7 build, and has never failed on java6 (yet). This
failure is hard to reproduce as I couldn't repro it on any other m/c (tried it on local/other
vms on java7). Whenever it fails, it just stops printing after second iteration, and then
test just times out (30 sec). The only thing it does b/w 2nd and 3rd try is to keep invoking
isFileClosed after every 10ms. This made me think that it is hanging on that call. Upping
the pause time is a safety measure just to reduce the number of calls.
                
> TestFSHDFSUtils is too aggressive
> ---------------------------------
>
>                 Key: HBASE-9195
>                 URL: https://issues.apache.org/jira/browse/HBASE-9195
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.95.1
>            Reporter: Himanshu Vashishtha
>            Priority: Minor
>         Attachments: HBase-9195.patch, HBase-9195.patch
>
>
> The recoverLease test in this class sets hbase.lease.recovery.pause to 10ms. It causes
that after every 10 ms, it calls isFileClosed (if it is available). Though the test takes
only 3-4 sec, but it makes about 270 isFileClosed calls. This cause test to become somewhat
flaky in our internal testing.
> The proposed fix is to just to increase the pause interval to 100 ms. This reduces the
number of calls to about 30.

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