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https://issues.apache.org/jira/browse/PIG-960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ankit Modi updated PIG-960:
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Patch Info: (was: [Patch Available])
Performance improvement numbers obtained by running PigMix
||Script||svn Trunk||LineRecordReader Patch||
||L1|186|147|
||L2|73|33|
||L3|195|165|
||L4|116|76|
||L5|93|59|
||L6|102|63|
||L7|91|69|
||L8|84|44|
||L9|189|148|
||L10|285|268|
||L11|108|51|
||L12|112|73|
||Sum|1634|1196|
||% Improvement| ||26.81|
> Using Hadoop's optimized LineRecordReader for reading Tuples in PigStorage
> ---------------------------------------------------------------------------
>
> Key: PIG-960
> URL: https://issues.apache.org/jira/browse/PIG-960
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Reporter: Ankit Modi
>
> PigStorage's reading of Tuples ( lines ) can be optimized using Hadoop's
> {{LineRecordReader}}.
> This can help in following areas
> - Improving performance reading of Tuples (lines) in {{PigStorage}}
> - Any future improvements in line reading done in Hadoop's
> {{LineRecordReader}} is automatically carried over to Pig
> Issues that are handled by this patch
> - BZip uses internal buffers and positioning for determining the number of
> bytes read. Hence buffering done by {{LineRecordReader}} has to be turned off
> - Current implementation of {{LocalSeekableInputStream}} does not implement
> {{available}} method. This method has to be implemented.
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