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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4123) The RLE encoding for ORC can be improved
Date Mon, 12 Aug 2013 21:46:50 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13737398#comment-13737398
] 

Hudson commented on HIVE-4123:
------------------------------

FAILURE: Integrated in Hive-trunk-hadoop2-ptest #55 (See [https://builds.apache.org/job/Hive-trunk-hadoop2-ptest/55/])
HIVE-4123 Improved ORC integer RLE version 2. (Prasanth Jayachandran via 
omalley) (omalley: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1513155)
* /hive/trunk/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
* /hive/trunk/ql/src/gen/protobuf/gen-java/org/apache/hadoop/hive/ql/io/orc/OrcProto.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/IntegerReader.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/IntegerWriter.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/RecordReaderImpl.java.orig
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/RunLengthIntegerReader.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/RunLengthIntegerReaderV2.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/RunLengthIntegerWriter.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/RunLengthIntegerWriterV2.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/SerializationUtils.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.java
* /hive/trunk/ql/src/protobuf/org/apache/hadoop/hive/ql/io/orc/orc_proto.proto
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestBitPack.java
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestIntegerCompressionReader.java
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestNewIntegerEncoding.java
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestOrcNullOptimization.java
* /hive/trunk/ql/src/test/resources/orc-file-dump-dictionary-threshold.out
* /hive/trunk/ql/src/test/resources/orc-file-dump.out

                
> The RLE encoding for ORC can be improved
> ----------------------------------------
>
>                 Key: HIVE-4123
>                 URL: https://issues.apache.org/jira/browse/HIVE-4123
>             Project: Hive
>          Issue Type: New Feature
>          Components: File Formats
>    Affects Versions: 0.12.0
>            Reporter: Owen O'Malley
>            Assignee: Prasanth J
>              Labels: orcfile
>             Fix For: 0.12.0
>
>         Attachments: HIVE-4123.1.git.patch.txt, HIVE-4123.2.git.patch.txt, HIVE-4123.3.patch.txt,
HIVE-4123.4.patch.txt, HIVE-4123.5.txt, HIVE-4123.6.txt, HIVE-4123.7.txt, HIVE-4123-8.patch,
HIVE-4123.8.txt, HIVE-4123.8.txt, HIVE-4123.patch.txt, ORC-Compression-Ratio-Comparison.xlsx
>
>
> The run length encoding of integers can be improved:
> * tighter bit packing
> * allow delta encoding
> * allow longer runs

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