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https://issues.apache.org/jira/browse/TEZ-3673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harish Jaiprakash updated TEZ-3673:
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Attachment: TEZ-3673.02.patch
* Using configured value for buffer limit instead of 32 mb.
* Using a configuration to fraction of buffers in a spill.
* Changed buffer allocation logic, if the buffer limit is set and available
memory >= buffer limit * 2, it will use buffer limit as size always. Over
allocating or under allocating depending on the left over size.
Counter + warning for too many spills pending, I'll add them once Rajesh's
optimization is in.
> Allocate smaller buffers in UnorderedPartitionedKVWriter
> --------------------------------------------------------
>
> Key: TEZ-3673
> URL: https://issues.apache.org/jira/browse/TEZ-3673
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Harish Jaiprakash
> Assignee: Harish Jaiprakash
> Attachments: TEZ-3673.01.patch, TEZ-3673.02.patch
>
>
> UnorderedPartitionedKVWriter allocates in bigger chunks. It may or may not
> get filled up. In PipelinedSorter, we start off with 32MB chunks. But
> UnorderedPartitionedKVWriter can be worse as it allocates bigger blocks. Need
> to revisit this allocation.
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