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https://issues.apache.org/jira/browse/HBASE-15152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15112034#comment-15112034
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Hudson commented on HBASE-15152:
--------------------------------
SUCCESS: Integrated in HBase-1.3-IT #452 (See
[https://builds.apache.org/job/HBase-1.3-IT/452/])
HBASE-15152 Automatically include prefix-tree module in MR jobs if (jmhsieh:
rev fd7862889ff838f24291420dcd2f2c565f3bc67b)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableMapReduceUtil.java
> Automatically include prefix-tree module in MR jobs if present
> --------------------------------------------------------------
>
> Key: HBASE-15152
> URL: https://issues.apache.org/jira/browse/HBASE-15152
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 1.0.0
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Fix For: 2.0.0, 1.3.0, 1.2.1, 1.1.3, 1.0.4, 0.98.18
>
> Attachments: hbase-15152.patch
>
>
> I was running some MR jobs tests and ended up with PrefixTreeCodec class not
> found in the YarnChildren processes.
> {code}
> 2016-01-21 06:24:26,844 WARN [main] mapreduce.TableMapReduceUtil(785): The
> hbase-prefix-tree module jar containing PrefixTreeCodec is not present.
> java.lang.ClassNotFoundException:
> org.apache.hadoop.hbase.code.prefixtree.PrefixTreeCodec
> at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> {code}
> This is related to HBASE-7434 and HBASE-7936 which address compile time
> concerns. This fix makes it so that jar inclusion is done at run time, and
> continues if it is not present (for mr unit tests that don't depend on it)
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