[jira] [Commented] (IGNITE-3021) Test org.apache.ignite.internal.processors.igfs.IgfsStreamsSelfTest#testCreateFileColocated fails sometimes.

["Ivan Veselovsky (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-3021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15356888#comment-15356888 ] 

Ivan Veselovsky commented on IGNITE-3021:
-----------------------------------------

Invocation in the test beginning {code}awaitPartitionMapExchange();{code} or 
{code}        IgniteConfiguration cfg = ....
        cfg.setLateAffinityAssignment(false);
{code}
when making the configuration solves the problem. Reason is that before initial partition map exchange affinity function considers one node to be backup of another, so it may really return 2 nodes.

> Test org.apache.ignite.internal.processors.igfs.IgfsStreamsSelfTest#testCreateFileColocated fails sometimes.
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-3021
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3021
>             Project: Ignite
>          Issue Type: Bug
>          Components: IGFS
>    Affects Versions: ignite-1.4
>            Reporter: Ivan Veselovsky
>            Assignee: Vladimir Ozerov
>             Fix For: 1.7
>
>
> Test org.apache.ignite.internal.processors.igfs.IgfsStreamsSelfTest#testCreateFileColocated fails sometimes on master branch:
> {code}
> ------- Stderr: -------
> [15:16:32,400][ERROR][main][root] Test failed.
> junit.framework.AssertionFailedError: expected:<1> but was:<2>
>     at junit.framework.Assert.fail(Assert.java:57)
>     at junit.framework.Assert.failNotEquals(Assert.java:329)
>     at junit.framework.Assert.assertEquals(Assert.java:78)
>     at junit.framework.Assert.assertEquals(Assert.java:234)
>     at junit.framework.Assert.assertEquals(Assert.java:241)
>     at junit.framework.TestCase.assertEquals(TestCase.java:409)
>     at org.apache.ignite.internal.processors.igfs.IgfsStreamsSelfTest.testCreateFileColocated(IgfsStreamsSelfTest.java:237)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke(Method.java:606)
>     at junit.framework.TestCase.runTest(TestCase.java:176)
>     at org.apache.ignite.testframework.junits.GridAbstractTest.runTestInternal(GridAbstractTest.java:1759)
>     at org.apache.ignite.testframework.junits.GridAbstractTest.access$000(GridAbstractTest.java:118)
>     at org.apache.ignite.testframework.junits.GridAbstractTest$4.run(GridAbstractTest.java:1697)
>     at java.lang.Thread.run(Thread.java:745)
> {code}
> The problem is that data cache rebalancing happens during the test, that causes data blocks affinity calculation to be not reproducible: block that initially maps to 0-th node after some time maps to a different node.
> Suggested fix is to switch off automatic rebelancing, and do the rebalancing manually only once upon the test beginning.



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