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From "Ivan Veselovsky (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-3312) [Test] HadoopMapReduceEmbeddedSelfTest.testMultiReducerWholeMapReduceExecution flakily fails.
Date Tue, 14 Jun 2016 17:47:27 GMT
Ivan Veselovsky created IGNITE-3312:
---------------------------------------

             Summary: [Test] HadoopMapReduceEmbeddedSelfTest.testMultiReducerWholeMapReduceExecution
flakily fails.
                 Key: IGNITE-3312
                 URL: https://issues.apache.org/jira/browse/IGNITE-3312
             Project: Ignite
          Issue Type: Bug
            Reporter: Ivan Veselovsky
            Assignee: Ivan Veselovsky


HadoopMapReduceEmbeddedSelfTest.testMultiReducerWholeMapReduceExecution fails with ~20% probability
. 
Failure cause is either the 1st or 2nd marked line in the following code (org.apache.ignite.internal.processors.igfs.IgfsMetaManager#create)
:
{code}
                            // Check: can we overwrite it?
                            if (!overwrite)
                                throw new IgfsPathAlreadyExistsException("Failed to create
a file: " + path); // ***** #1

                            // Check if file already opened for write.
                            if (oldInfo.lockId() != null)
                                throw new IgfsException("File is already opened for write:
" + path); // ***** #2
{code}

Diagnostic shows that the same file really attempted to be created several times on one thread.



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