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https://issues.apache.org/jira/browse/HIVE-2600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13164262#comment-13164262
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[email protected] commented on HIVE-2600:
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https://reviews.apache.org/r/3051/
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Review request for hive.
Summary
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Introduces interfaces for schema-aware codecs. Actual implementations not part
of this patch. One specific implementation will be added by HIVE-2604.
This addresses bug HIVE-2600.
https://issues.apache.org/jira/browse/HIVE-2600
Diffs
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ql/src/java/org/apache/hadoop/hive/ql/io/SchemaAwareCompressionInputStream.java
PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/io/SchemaAwareCompressionOutputStream.java
PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/io/RCFile.java b15fdb8
Diff: https://reviews.apache.org/r/3051/diff
Testing
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Thanks,
Krishna
> 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.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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