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From "Phabricator (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-2600) Enable/Add type-specific compression for rcfile
Date Fri, 23 Dec 2011 12:32:32 GMT

     [ https://issues.apache.org/jira/browse/HIVE-2600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phabricator updated HIVE-2600:
------------------------------

    Attachment: HIVE-2600.D1005.1.patch

krishnakumar requested code review of "HIVE-2600 [jira] Enable/Add type-specific compression
for rcfile".
Reviewers: JIRA

  adding schema-aware compression codec interfaces

  Enable schema-aware compression codecs which can perform type-specific compression on a
per-column basis. I see this as in three-parts

  1. Add interfaces for the rcfile to communicate column information to the codec

  2. Add an "uber compressor" which can perform column-specific compression on a per-block
basis. Initially, this can be config driven, but we can go for a dynamic implementation later.

  3. A bunch of type-specific compressors

  This jira is for the first part of the effort.

TEST PLAN
  EMPTY

REVISION DETAIL
  https://reviews.facebook.net/D1005

AFFECTED FILES
  ql/src/java/org/apache/hadoop/hive/ql/io/RCFile.java
  ql/src/java/org/apache/hadoop/hive/ql/io/SchemaAwareCompressionInputStream.java
  ql/src/java/org/apache/hadoop/hive/ql/io/SchemaAwareCompressionOutputStream.java

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> Enable/Add type-specific compression for rcfile
> -----------------------------------------------
>
>                 Key: HIVE-2600
>                 URL: https://issues.apache.org/jira/browse/HIVE-2600
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor, Serializers/Deserializers
>            Reporter: Krishna Kumar
>            Assignee: Krishna Kumar
>            Priority: Minor
>         Attachments: HIVE-2600.D1005.1.patch, HIVE-2600.v0.patch, HIVE-2600.v1.patch
>
>
> Enable schema-aware compression codecs which can perform type-specific compression on
a per-column basis. I see this as in three-parts
> 1. Add interfaces for the rcfile to communicate column information to the codec
> 2. Add an "uber compressor" which can perform column-specific compression on a per-block
basis. Initially, this can be config driven, but we can go for a dynamic implementation later.
> 3. A bunch of type-specific compressors
> This jira is for the first part of the effort.

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