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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16743) TestSimpleRpcScheduler#testCoDelScheduling is broke
Date Fri, 28 Oct 2016 23:28:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15616929#comment-15616929

Mikhail Antonov commented on HBASE-16743:

[~stack] with the above changes to handler names in the test it's fast and stable for me (ran
50 times in a loop and all passed). Going to commit in master, branch-1 and branch-1.3. Do
you want to enable it in master now?

> TestSimpleRpcScheduler#testCoDelScheduling is broke
> ---------------------------------------------------
>                 Key: HBASE-16743
>                 URL: https://issues.apache.org/jira/browse/HBASE-16743
>             Project: HBase
>          Issue Type: Bug
>          Components: rpc
>    Affects Versions: 1.3.0
>            Reporter: stack
>            Assignee: Mikhail Antonov
>             Fix For: 1.3.0
> The testCoDelScheduling test is broke. Here are some notes on it. I have disabled it
in the HBASE-15638 shading patch.
> {code}
> I don't get this test. When I time this test, the minDelay is > 2 * codel delay from
the get go. So we are always overloaded. The test below would seem to complete the queuing
of all the CallRunners inside the codel check interval. I don't think we are skipping codel
checking. Second, I think this test has been  broken since HBASE-16089 Add on FastPath for
CoDel went in. The thread name we were looking for was the name BEFORE we updated: i.e. "RpcServer.CodelBQ.default.handler".
But same patch changed the name of the codel  fastpath thread to: new FastPathBalancedQueueRpcExecutor("CodelFPBQ.default",
handlerCount, numCallQueues...
> Codel is hard to test. This test is going to be flakey given it all timer-based. Disabling
for now till chat
> {code}
> FYI [~mantonov]

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