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https://issues.apache.org/jira/browse/HAWQ-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15765741#comment-15765741
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Vineet Goel commented on HAWQ-1197:
-----------------------------------
Currently, queries on PXF external tables use default_hash_table_bucket_number
as the static number of virtual segments to process the query. We don't want to
recommend changing this parameter for tuning purposes, as changing the
parameter would affect HASH distribution on HAWQ internal tables, requiring a
re-distribution of data. The future enhancement goal is to have PXF use
something more dynamic instead.
> Add note about default_hash_table_bucket_number to PXF section
> --------------------------------------------------------------
>
> Key: HAWQ-1197
> URL: https://issues.apache.org/jira/browse/HAWQ-1197
> Project: Apache HAWQ
> Issue Type: Improvement
> Components: Documentation
> Reporter: Jane Beckman
> Assignee: David Yozie
>
> The discussion of default_hash_table_bucket_number controlling numbe rof
> segments in PXF external table queries is in Best Practices, but not the PXF
> sections.
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