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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10607) [JDK8] NoSuchMethodError involving ConcurrentHashMap.keySet if running on JRE 7
Date Tue, 17 Jan 2017 05:05:28 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15825053#comment-15825053
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stack commented on HBASE-10607:
-------------------------------

Ugh. Ran into this just now in spite if bit added to refguide. Dang.

> [JDK8] NoSuchMethodError involving ConcurrentHashMap.keySet if running on JRE 7
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-10607
>                 URL: https://issues.apache.org/jira/browse/HBASE-10607
>             Project: HBase
>          Issue Type: Task
>            Reporter: Andrew Purtell
>            Priority: Trivial
>         Attachments: 10607.txt
>
>
> If you try running HBase built with Java 8 on a Java 7 JRE, then processes will fail
early with:
> {noformat}
> java.lang.NoSuchMethodError: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
> {noformat}
> I came across this incidentally. I suppose we should consider documenting this in the
manual in the Troubleshooting section. 



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