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https://issues.apache.org/jira/browse/IMPALA-5165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17432283#comment-17432283
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Xinyi Zou commented on IMPALA-5165:
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Thank you Tim.
Ask another question, I see that the new chunk of MemPool is still directly
malloc memory from the system.
Why not get a buffer through BufferAllocator? This seems to be good for
performance.
Thanks for the answer [~tarmstrong]
> Allocate memory for all data from BufferPool
> --------------------------------------------
>
> Key: IMPALA-5165
> URL: https://issues.apache.org/jira/browse/IMPALA-5165
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Tim Armstrong
> Priority: Major
> Labels: resource-management
>
> Eventually we should back RowBatches and other runtime memory (e.g. MemPools,
> FreePools, compression buffers, etc) with memory from BufferPool.
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