Bikas Saha created TEZ-1656:
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Summary: Grouping of splits should maintain the original ordering
of splits within a group
Key: TEZ-1656
URL: https://issues.apache.org/jira/browse/TEZ-1656
Project: Apache Tez
Issue Type: Task
Reporter: Bikas Saha
Assignee: Bikas Saha
Sometimes the original splits may have an ordering (eg. splits from a sorted
file). Maintaining the ordering of splits inside a group maintains the sort
order.
The node level grouping maintains ordering. When collecting leftover groups for
rack level grouping, the ordering is lost in current code.
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