Hi
I'm trying to load the parquet file for querying purpose from my web
application. I could able to load it as JavaSchemaRDD. But at the time of
using map function on the JavaSchemaRDD, I'm getting the following
exception.
The class in which I'm using this code implements Serializable class. Could
anyone let me know the cause.
org.apache.spark.SparkException: Task not serializable
Caused by: org.apache.spark.SparkException: Task not serializable
at
org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:166)
at org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:158)
at org.apache.spark.SparkContext.clean(SparkContext.scala:1242)
at org.apache.spark.rdd.RDD.map(RDD.scala:270)
at org.apache.spark.api.java.JavaRDDLike$class.map(JavaRDDLike.scala:75)
at
org.apache.spark.sql.api.java.JavaSchemaRDD.map(JavaSchemaRDD.scala:42)
... 35 more
Caused by: java.io.NotSerializableException:
org.apache.catalina.session.StandardSessionFacade
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
Thanks in advance.
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