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https://issues.apache.org/jira/browse/SPARK-24936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Imran Rashid resolved SPARK-24936.
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Resolution: Won't Fix
As we've already shipped 2.4, I think its unlikely we're going to fix this
later. I don't think we need to worry that much about spark 3.0 talking to
shuffle services < 2.2.
If anybody is motivated, feel free to submit a pr here, but I think leaving
this open is probably misleading about the status.
> Better error message when trying a shuffle fetch over 2 GB
> ----------------------------------------------------------
>
> Key: SPARK-24936
> URL: https://issues.apache.org/jira/browse/SPARK-24936
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Affects Versions: 2.4.0
> Reporter: Imran Rashid
> Priority: Major
>
> After SPARK-24297, spark will try to fetch shuffle blocks to disk if their
> over 2GB. However, this will fail with an external shuffle service running <
> spark 2.2, with an unhelpful error message like:
> {noformat}
> 18/07/26 07:15:02 WARN scheduler.TaskSetManager: Lost task 1.0 in stage 1.3
> (TID 15, xyz.com, executor 2): FetchFailed(BlockManagerId(1
> , xyz.com, 7337, None), shuffleId=0, mapId=1, reduceId=1, message=
> org.apache.spark.shuffle.FetchFailedException:
> java.lang.UnsupportedOperationException
> at
> org.apache.spark.network.server.StreamManager.openStream(StreamManager.java:60)
> at
> org.apache.spark.network.server.TransportRequestHandler.processStreamRequest(TransportRequestHandler.java:136)
> ...
> {noformat}
> We can't do anything to make the shuffle succeed, in this situation, but we
> should fail with a better error message.
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