[Pig-dev] [jira] Created: (PIG-1554) PERF: create accumulative bag in RelationToExpressionProject

[ https://issues.apache.org/jira/browse/PIG-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thejas M Nair updated PIG-1554:
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Description:
In nested-foreach, RelationToExpressionProject creates a DefaultDataBag out of the results of PODistinct and POSort . If the results of the plan are going to be consumed by a operations that support accumulative interface such as COUNT the results can be linked to a new Accumulative bag .


was:
RelationToExpressionProject creates a DefaultDataBag out of the results of PODistinct and POSort . If the results of the plan are going to be consumed by a operations that support accumulative interface such as COUNT the results can be linked to a new Accumulative bag .

[ https://issues.apache.org/jira/browse/PIG-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alan Gates updated PIG-1554:
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Assignee: Thejas M Nair
Fix Version/s: 0.9.0

[ https://issues.apache.org/jira/browse/PIG-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12925221#action_12925221 ]

Olga Natkovich commented on PIG-1554:
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most of the time for COUNT, the algebraic interface will be used. I am actually not sure how often accumulator interface is used at this point so not sure how many queries would be improved by this change