[PIG-4249] Size estimation should be done in sampler instead of sample aggregator - ASF JIRA

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Type: Sub-task
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: 0.18.0
Component/s: tez
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Description

https://reviews.apache.org/r/21302/ comments on Revision 8 - size estimation is done in sample aggregator for order by to keep it same as skewed join but this can have performance implication if the tuple sizes are big.

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Assignee:: Unassigned

Reporter:: Rohini Palaniswamy

Votes:: 1 Vote for this issue

Watchers:: 1 Start watching this issue

Dates

Created:: 27/Oct/14 20:19

Updated:: 24/May/17 23:03

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Size estimation should be done in sampler instead of sample aggregator