Ala Luszczak created SPARK-22251:
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Summary: Metric "aggregate time" is incorrect when codegen is off
Key: SPARK-22251
URL: https://issues.apache.org/jira/browse/SPARK-22251
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.0
Reporter: Ala Luszczak
Priority: Minor
When whole-stage codegen is off, metric "aggregate time" is not set correctly.
Repro:
# spark.conf.set("spark.sql.codegen.wholeStage", false)
#
spark.range(5).crossJoin(spark.range(5)).toDF("a","b").groupBy("a").agg(sum("b")).show
# In Spark UI > SQL you can see that "aggregate time total" is 0 in
"HashAggregate" boxes
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