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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