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https://issues.apache.org/jira/browse/PIG-1458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard Ding updated PIG-1458:
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Attachment: PIG-1458.patch
This patch uses the new multi-file-combiner (PIG-1518) to concatenate many
small files for replicated join. This is based on the assumption that the total
size of the replicated files should be small enough to fit into main memory.
> aggregate files for replicated join
> -----------------------------------
>
> Key: PIG-1458
> URL: https://issues.apache.org/jira/browse/PIG-1458
> Project: Pig
> Issue Type: Improvement
> Reporter: Olga Natkovich
> Assignee: Richard Ding
> Fix For: 0.8.0
>
> Attachments: PIG-1458.patch
>
>
> We have noticed that if the smaller data in replicated join has many files,
> this puts unneeded burden on the name node. pre-aggregating the files can
> improve the situation
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