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Posted to common-issues@hadoop.apache.org by "Yonger (JIRA)" <ji...@apache.org> on 2017/12/04 03:26:00 UTC
[jira] [Created] (HADOOP-15087) Write directly without creating
temp directory to avoid rename
Yonger created HADOOP-15087:
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Summary: Write directly without creating temp directory to avoid rename
Key: HADOOP-15087
URL: https://issues.apache.org/jira/browse/HADOOP-15087
Project: Hadoop Common
Issue Type: Improvement
Components: fs/s3
Reporter: Yonger
Rename in workloads like Teragen/Terasort who use Hadoop default outputcommitters really hurt performance a lot.
Stocator announce it doesn't create the temporary directories any all, and still preserves Hadoop's fault tolerance. I add a switch when creating file via integrating it's code into s3a, I got 5x performance gain in Teragen and 15% performance improvement in Terasort.
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