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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-16669) Fine tune Compaction to take advantage of Acid 2.0
Date Tue, 16 May 2017 00:16:04 GMT
Eugene Koifman created HIVE-16669:
-------------------------------------

             Summary: Fine tune Compaction to take advantage of Acid 2.0
                 Key: HIVE-16669
                 URL: https://issues.apache.org/jira/browse/HIVE-16669
             Project: Hive
          Issue Type: Bug
          Components: Transactions
            Reporter: Eugene Koifman
            Assignee: Eugene Koifman


* There is little point using 2.0 vectorized reader since there is no operator pipeline in
compaction
* If minor compaction just concats delete_delta files together, then the 2 stage compaction
should always ensure that we have a limited number of Orc readers to do the merging and current
OrcRawRecordMerger should be fine
* ...




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