Tomasz Bartczak created SPARK-7483:
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Summary: [MLLib] Using Kryo with FPGrowth fails with an exception
Key: SPARK-7483
URL: https://issues.apache.org/jira/browse/SPARK-7483
Project: Spark
Issue Type: Bug
Affects Versions: 1.3.1
Reporter: Tomasz Bartczak
When using FPGrowth algorithm with KryoSerializer - Spark fails with
{code}
Job aborted due to stage failure: Task 0 in stage 9.0 failed 1 times, most
recent failure: Lost task 0.0 in stage 9.0 (TID 16, localhost):
com.esotericsoftware.kryo.KryoException: java.lang.IllegalArgumentException:
Can not set final scala.collection.mutable.ListBuffer field
org.apache.spark.mllib.fpm.FPTree$Summary.nodes to
scala.collection.mutable.ArrayBuffer
Serialization trace:
nodes (org.apache.spark.mllib.fpm.FPTree$Summary)
org$apache$spark$mllib$fpm$FPTree$$summaries (org.apache.spark.mllib.fpm.FPTree)
{code}
This can be easily reproduced in spark codebase by setting
{code}
conf.set("spark.serializer", "org.apache.spark.serializer.KryoSerializer")
{code} and running FPGrowthSuite.
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