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From "Jared Winick (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4040) listSplits fails on IBM JVM
Date Tue, 27 Oct 2015 17:30:27 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976797#comment-14976797
] 

Jared Winick commented on ACCUMULO-4040:
----------------------------------------

Sorry, I do not. It actually was an accident that they were running on an IBM JVM and not
Oracle, so they corrected that and the issue obviously just went away, so there wasn't much
follow up. 

> listSplits fails on IBM JVM
> ---------------------------
>
>                 Key: ACCUMULO-4040
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4040
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: client
>         Environment: IBM J9 JVM. Accumulo 1.6
>            Reporter: Jared Winick
>             Fix For: 1.8.0
>
>
> I saw a user running on the IBM J9 JVM and the TableOperationsImpl.listSplits  never
returns as it gets stuck in a loop throwing exceptions. It appears like the root cause is
that listSplits calls TableMetadataServicer.getTabletLocations which then calls validateEntries.
In here it attempts to cast a Set to a SortedSet
> {code:java}
> SortedSet<KeyExtent> tabletsKeys = (SortedSet<KeyExtent>) tablets.keySet();
> {code}
> Looks like you can get away with this on a Oracle/OpenJDK JVM as tablets is a TreeMap
and its impl returns a NavigableSet which is a SortedSet.



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