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Posted to dev@pig.apache.org by "Alan Gates (JIRA)" <ji...@apache.org> on 2009/11/12 02:36:39 UTC
[jira] Assigned: (PIG-960) Using Hadoop's optimized
LineRecordReader for reading Tuples in PigStorage
[ https://issues.apache.org/jira/browse/PIG-960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Gates reassigned PIG-960:
------------------------------
Assignee: Ankit Modi
> 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
> Assignee: Ankit Modi
> Fix For: 0.6.0
>
> Attachments: pig_rlr.patch
>
>
> 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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