Rohini Palaniswamy created PIG-4840:
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Summary: Do not turn off UnionOptimizer for unsupported storefuncs
in case of no vertex groups
Key: PIG-4840
URL: https://issues.apache.org/jira/browse/PIG-4840
Project: Pig
Issue Type: Improvement
Reporter: Rohini Palaniswamy
Assignee: Rohini Palaniswamy
Fix For: 0.16.0
We turn of UnionOptimizer for unsupported storefuncs as writing from two
vertices may overwrite data. But in the case where there is only one unique
union member we don't create vertex groups and merge the union operators into
the Split vertex, we can turn it on.
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