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S commented on SPARK-7483: -------------------------- I encountered the same bug. Adding sparkConf.registerKryoClasses(Array(classOf[ArrayBuffer[String]], classOf[ListBuffer[String]])) seems to fix the problem. > [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 > Components: MLlib > Affects Versions: 1.3.1 > Reporter: Tomasz Bartczak > Priority: Minor > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org