Reynold Xin created SPARK-8861:
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Summary: Add basic instrumentation to each SparkPlan operator
Key: SPARK-8861
URL: https://issues.apache.org/jira/browse/SPARK-8861
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Reynold Xin
The basic metric can be the number of tuples that is flowing through. We can
add more metrics later.
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