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Posted to issues@tez.apache.org by "Rajesh Balamohan (Jira)" <ji...@apache.org> on 2020/08/05 05:24:00 UTC

[jira] [Created] (TEZ-4216) RLE check in MergeManager::finalMerge could be disabled

Rajesh Balamohan created TEZ-4216:
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             Summary: RLE check in MergeManager::finalMerge could be disabled
                 Key: TEZ-4216
                 URL: https://issues.apache.org/jira/browse/TEZ-4216
             Project: Apache Tez
          Issue Type: Improvement
            Reporter: Rajesh Balamohan


[https://github.com/apache/tez/blob/master/tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/shuffle/orderedgrouped/MergeManager.java#L1319]

 

[https://github.com/apache/tez/blob/master/tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/sort/impl/TezMerger.java]

 

MergerManager's finalMerger() need not check for RLE. We could pass on the RLE information from sorter via events. Until then, it would be good to turn off RLE here.

 



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