[infinispan-issues] [JBoss JIRA] (ISPN-2835) Issues w/ M/R test cases if cache are not explicitly started on all nodes

[Anna Manukyan (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12755448#comment-12755448 ] 

Anna Manukyan commented on ISPN-2835:
-------------------------------------

[~saturnism] if you mean the startCache() method of DefaultCacheManager, then it will work, because if you'll go to the source of that method, then you can see that it calls the same getCache() method which I was talking about. 

But you need to call startCache() on all cacheManagers.
                
> Issues w/ M/R test cases if cache are not explicitly started on all nodes
> -------------------------------------------------------------------------
>
>                 Key: ISPN-2835
>                 URL: https://issues.jboss.org/browse/ISPN-2835
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Core API, Distributed Execution and Map/Reduce
>            Reporter: Ray Tsang
>            Assignee: Galder Zamarreño
>             Fix For: 5.3.0.Alpha1, 5.3.0.Final
>
>         Attachments: mr-test-src.zip
>
>
> I ran into some issues while using M/R.  The gist of the issue I was seeing is that:
> Start a cluster of Embedded Caches, like 4 nodes
> Put in 100 elements
> Run a simple M/R job to count the number of keys
> If I run the M/R job using  the node I'm inserting elements into as coordinator - the result is 100
> But if I run the M/R job using a different node as coordinator, the result is less than 100
> More interestingly, I can pause for 5 seconds and run the M/R jobs again, the results are always less than 100
> This behavior doens't occur if I explicitly run cacheManager.getCache() for each of the nodes...

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