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From "Gopal V" <>
Subject Re: Review Request 17634: ZeroCopy and Direct ByteBuffer decompression for ORC files
Date Thu, 06 Feb 2014 03:19:24 GMT

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(Updated Feb. 6, 2014, 3:19 a.m.)

Review request for hive, Gunther Hagleitner, Owen O'Malley, and Prasanth_J.

Bugs: HIVE-6347

Repository: hive-git


Zero Copy Read path for ORC + Zlib&Snappy decompressors wrapping the DirectDecompressor
interface from HADOOP-10047


  common/src/java/org/apache/hadoop/hive/conf/ 84ee78f 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ PRE-CREATION

  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ 6da3d03 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ a5747a6 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ 2bab0ce 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ 56f25b7 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ 0df82b9 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ e3131a3 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ d904c44 
  ql/src/java/org/apache/hadoop/hive/ql/io/orc/ a75fdea 
  ql/src/test/org/apache/hadoop/hive/ql/io/orc/ 03fc705 



Updated seek tests to test with zero-copy reads on.

TPC-DS queries on scale=2 flat ORC data.


Gopal V

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