Arun A K created MAPREDUCE-4974:
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Summary: optimising the LineRecordReader initialize method
Key: MAPREDUCE-4974
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4974
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: mrv1, mrv2, performance
Affects Versions: 0.23.5, 2.0.2-alpha
Environment: Hadoop Linux
Reporter: Arun A K
Assignee: Arun A K
Fix For: 0.20.204.0, 0.24.0
I found there is a a scope of optimizing the code, over initialize() if we have
compressionCodecs & codec instantiated only if its a compressed input.
Mean while Gelesh George Omathil, added if we could avoid the null check of key
& value. This would time save, since for every next key value generation, null
check is done. The intention being to instantiate only once and avoid NPE as
well. Hope both could be met if initialize key & value over initialize()
method. We both have worked on it.
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