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Date: Fri, 3 Feb 2012 21:44:53 +0000 (UTC)
From: "Anupam Seth (Created) (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <31516168.9170.1328305493657.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Created] (HADOOP-8021) Hadoop ignores old-style config
 options for enabling compressed output when passed on from PIG
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Hadoop ignores old-style config options for enabling compressed output when passed on from PIG
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                 Key: HADOOP-8021
                 URL: https://issues.apache.org/jira/browse/HADOOP-8021
             Project: Hadoop Common
          Issue Type: Bug
          Components: conf
    Affects Versions: 0.23.1
            Reporter: Anupam Seth
            Assignee: Anupam Seth
             Fix For: 0.23.1


Hadoop seems to ignore the config options even though they are printed as deprecation warnings in the log: mapred.output.compress and
mapred.output.compression.codec

- settings that work on 0.20 but not on 0.23
mapred.output.compress=true
mapred.output.compression.codec=org.apache.hadoop.io.compress.BZip2Codec

- settings that work on 0.23
mapreduce.output.fileoutputformat.compress=true
mapreduce.output.fileoutputformat.compress.codec=org.apache.hadoop.io.compress.BZip2Codec

This breaks backwards compatibility and causes existing jobs to fail.

This was found to happen due to the JobSubmitter writing out the job.xml file with the old-style configs and can be fixed by handdling deprecation before the file is written out.


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