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Posted to dev@tinkerpop.apache.org by "Chen Xin Yu (JIRA)" <ji...@apache.org> on 2016/09/01 15:11:20 UTC
[jira] [Commented] (TINKERPOP-1426) GryoSerializer should implement
Java serialization interface
[ https://issues.apache.org/jira/browse/TINKERPOP-1426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15455720#comment-15455720 ]
Chen Xin Yu commented on TINKERPOP-1426:
----------------------------------------
I have a draft fix for this JIRA, I will try to submit a pull request on github.
> GryoSerializer should implement Java serialization interface
> ------------------------------------------------------------
>
> Key: TINKERPOP-1426
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1426
> Project: TinkerPop
> Issue Type: Bug
> Components: io
> Affects Versions: 3.2.1
> Reporter: Chen Xin Yu
>
> There is description for Serializer in spark:
> * Implementations of this trait should implement:
> *
> * 1. a zero-arg constructor or a constructor that accepts a [[org.apache.spark.SparkConf]]
> * as parameter. If both constructors are defined, the latter takes precedence.
> *
> * 2. Java serialization interface.
> Class GryoSerializer in Tinkerepop extends Serializer, but does not implement java.io.Serializable.
> It works well before Spark 2.0. But with Spark 2.0, it changed by SPARK-13926 for Dependency,scala.
> Gyro and all its fields must implement Java serialisation interface, otherwise hundreds of test cases are failed as:
> Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task not serializable: java.io.NotSerializableException: org.apache.tinkerpop.gremlin.spark.structure.io.gryo.GryoSerializer
> Serialization stack:
> - object not serializable (class: org.apache.tinkerpop.gremlin.spark.structure.io.gryo.GryoSerializer, value: org.apache.tinkerpop.gremlin.spark.structure.io.gryo.GryoSerializer@1b12ec8e)
> - field (class: org.apache.spark.ShuffleDependency, name: serializer, type: class org.apache.spark.serializer.Serializer)
> - object (class org.apache.spark.ShuffleDependency, org.apache.spark.ShuffleDependency@7a4f876a)
> - field (class: scala.Tuple2, name: _2, type: class java.lang.Object)
> - object (class scala.Tuple2, (MapPartitionsRDD[1] at mapToPair at InputFormatRDD.java:46,org.apache.spark.ShuffleDependency@7a4f876a))
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