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From Jan Warchoł <jan.warc...@codilime.com>
Subject changing split size in Hadoop configuration
Date Mon, 14 Jul 2014 14:03:05 GMT
Hello,

I recently got "Split metadata size exceeded 10000000" error when running
Cascading jobs with very big joins.  I found that I should change
mapreduce.jobtracker.split.metainfo.maxsize property in hadoop
configuration by adding this to the mapred-site.xml file:

  <property>
    <!-- allow more space for split metadata (default is 10000000) -->
    <name>mapreduce.jobtracker.split.metainfo.maxsize</name>
    <value>1000000000</value>
  </property>

but it didn't seem to have any effect - I'm probably doing something wrong.

Where should I add this change so that is has the desired effect?  Do I
understand correctly that jobtracker restart is required after making the
change? The cluster I'm working on has Hadoop 1.0.4.

thanks for any help,
-- 
*Jan Warchoł*
*Software Engineer*

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