Andrew Or created SPARK-13055:
---------------------------------
Summary: SQLHistoryListener throws ClassCastException
Key: SPARK-13055
URL: https://issues.apache.org/jira/browse/SPARK-13055
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.5.0
Reporter: Andrew Or
Assignee: Andrew Or
{code}
16/01/27 18:46:28 ERROR ReplayListenerBus: Listener SQLHistoryListener threw an
exception
java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long
at scala.runtime.BoxesRunTime.unboxToLong(BoxesRunTime.java:110)
at
org.apache.spark.sql.execution.ui.SQLHistoryListener$$anonfun$onTaskEnd$1$$anonfun$5.apply(SQLListener.scala:334)
at
org.apache.spark.sql.execution.ui.SQLHistoryListener$$anonfun$onTaskEnd$1$$anonfun$5.apply(SQLListener.scala:334)
at scala.Option.map(Option.scala:145)
at
org.apache.spark.sql.execution.ui.SQLHistoryListener$$anonfun$onTaskEnd$1.apply(SQLListener.scala:334)
at
org.apache.spark.sql.execution.ui.SQLHistoryListener$$anonfun$onTaskEnd$1.apply(SQLListener.scala:332)
{code}
SQLHistoryListener listens on SparkListenerTaskEnd events, which contain
non-SQL accumulators as well. We try to cast all accumulators we encounter to
Long, resulting in an error like this one.
Note: this was a problem even before internal accumulators were introduced. If
the task used a user accumulator of a type other than Long, we would still see
this.
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