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https://issues.apache.org/jira/browse/MAPREDUCE-3621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184233#comment-13184233
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Thomas Graves commented on MAPREDUCE-3621:
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So issue is there is still a DB connection thread around and it gets into a
deadlock between the connection thread and the server shutdown in the main
thread. The Server shutdown in the main thread gets a lock and waits
(presumable for the connections to go away), the connection itself is trying to
obtain that same lock to do a print. The connection never goes away so the
server shutdown times out.
> TestDBJob and TestDataDrivenDBInputFormat ant tests fail
> --------------------------------------------------------
>
> Key: MAPREDUCE-3621
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3621
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Reporter: Thomas Graves
> Fix For: 0.23.0
>
>
> The following mapred ant tests fail and have been failing for a very long
> time:
> [junit] Running org.apache.hadoop.mapreduce.lib.db.TestDBJob
> [junit] Running org.apache.hadoop.mapreduce.lib.db.TestDataDrivenDBInputFormat
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