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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-16743) TestSimpleRpcScheduler#testCoDelScheduling is broke
Date Fri, 30 Sep 2016 23:56:20 GMT
stack created HBASE-16743:

             Summary: TestSimpleRpcScheduler#testCoDelScheduling is broke
                 Key: HBASE-16743
                 URL: https://issues.apache.org/jira/browse/HBASE-16743
             Project: HBase
          Issue Type: Bug
          Components: rpc
            Reporter: stack

The testCoDelScheduling test is broke. Here are some notes on it. I have disabled it in the
HBASE-15638 shading patch.

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

FYI [~mantonov]

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