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https://issues.apache.org/jira/browse/SPARK-5421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14734561#comment-14734561
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Romi Kuntsman commented on SPARK-5421:
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does this still happen on the latest version?
I got some OOM with Spark 1.4.0
> SparkSql throw OOM at shuffle
> -----------------------------
>
> Key: SPARK-5421
> URL: https://issues.apache.org/jira/browse/SPARK-5421
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.2.0
> Reporter: Hong Shen
>
> ExternalAppendOnlyMap if only for the spark job that aggregator isDefined,
> but sparkSQL's shuffledRDD haven't define aggregator, so sparkSQL won't spill
> at shuffle, it's very easy to throw OOM at shuffle. I think sparkSQL also
> need spill at shuffle.
> One of the executor's log, here is stderr:
> 15/01/27 07:02:19 INFO spark.MapOutputTrackerWorker: Don't have map outputs
> for shuffle 1, fetching them
> 15/01/27 07:02:19 INFO spark.MapOutputTrackerWorker: Doing the fetch; tracker
> actor =
> Actor[akka.tcp://sparkDriver@10.196.128.140:40952/user/MapOutputTracker#1435377484]
> 15/01/27 07:02:19 INFO spark.MapOutputTrackerWorker: Got the output locations
> 15/01/27 07:02:19 INFO storage.ShuffleBlockFetcherIterator: Getting 143
> non-empty blocks out of 143 blocks
> 15/01/27 07:02:19 INFO storage.ShuffleBlockFetcherIterator: Started 4 remote
> fetches in 72 ms
> 15/01/27 07:47:29 ERROR executor.CoarseGrainedExecutorBackend: RECEIVED
> SIGNAL 15: SIGTERM
> here is stdout:
> 2015-01-27T07:44:43.487+0800: [Full GC 3961343K->3959868K(3961344K),
> 29.8959290 secs]
> 2015-01-27T07:45:13.460+0800: [Full GC 3961343K->3959992K(3961344K),
> 27.9218150 secs]
> 2015-01-27T07:45:41.407+0800: [GC 3960347K(3961344K), 3.0457450 secs]
> 2015-01-27T07:45:52.950+0800: [Full GC 3961343K->3960113K(3961344K),
> 29.3894670 secs]
> 2015-01-27T07:46:22.393+0800: [Full GC 3961118K->3960240K(3961344K),
> 28.9879600 secs]
> 2015-01-27T07:46:51.393+0800: [Full GC 3960240K->3960213K(3961344K),
> 34.1530900 secs]
> #
> # java.lang.OutOfMemoryError: Java heap space
> # -XX:OnOutOfMemoryError="kill %p"
> # Executing /bin/sh -c "kill 9050"...
> 2015-01-27T07:47:25.921+0800: [GC 3960214K(3961344K), 3.3959300 secs]
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