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https://issues.apache.org/jira/browse/SPARK-1750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13994766#comment-13994766
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Joseph E. Gonzalez commented on SPARK-1750:
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I believe this issue is resolved with PR #724.
> EdgePartition is not serialized properly
> ----------------------------------------
>
> Key: SPARK-1750
> URL: https://issues.apache.org/jira/browse/SPARK-1750
> Project: Spark
> Issue Type: Bug
> Components: GraphX
> Affects Versions: 0.9.0, 1.0.0, 0.9.1
> Reporter: Ankur Dave
>
> The GraphX design attempts to avoid moving edges across the network, instead
> shipping the vertices to the edge partitions. However, Spark sometimes needs
> to move the edges, such as for straggler mitigation.
> All EdgePartition fields are currently declared transient, so the edges will
> not be serialized properly. Even if they are not marked transient, Kryo is
> unable to serialize the EdgePartition, failing with the following error:
> {code}
> java.lang.IllegalArgumentException: Can not set final
> org.apache.spark.graphx.util.collection.PrimitiveKeyOpenHashMap field
> org.apache.spark.graphx.impl.EdgePartition.index to
> scala.collection.immutable.$colon$colon
> {code}
> A workaround is to discourage Spark from moving the edges by setting
> {{spark.locality.wait}} to a high value such as 100000.
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