Matei Zaharia created SPARK-2657:
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Summary: Use more compact data structures than ArrayBuffer in
groupBy and cogroup
Key: SPARK-2657
URL: https://issues.apache.org/jira/browse/SPARK-2657
Project: Spark
Issue Type: Sub-task
Components: Spark Core
Reporter: Matei Zaharia
Assignee: Matei Zaharia
Fix For: 1.1.0-- This message was sent by Atlassian JIRA (v6.2#6252)
