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https://issues.apache.org/jira/browse/SPARK-21794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16134440#comment-16134440
]
Kazuaki Ishizaki commented on SPARK-21794:
------------------------------------------
Thank you for reporting this issue. Could you please attach a program that can
reproduce this problem?
> exception about reading task serial data(broadcast) value when the storage
> memory is not enough to unroll
> ---------------------------------------------------------------------------------------------------------
>
> Key: SPARK-21794
> URL: https://issues.apache.org/jira/browse/SPARK-21794
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.0.1, 2.1.1
> Reporter: roncenzhao
> Attachments: error stack.png
>
>
> ```
> 17/08/09 19:27:43 ERROR Utils: Exception encountered
> java.util.NoSuchElementException
> at
> org.apache.spark.util.collection.PrimitiveVector$$anon$1.next(PrimitiveVector.scala:58)
> at
> org.apache.spark.storage.memory.PartiallyUnrolledIterator.next(MemoryStore.scala:697)
> at
> org.apache.spark.util.CompletionIterator.next(CompletionIterator.scala:30)
> at
> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1$$anonfun$2.apply(TorrentBroadcast.scala:178)
> at
> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1$$anonfun$2.apply(TorrentBroadcast.scala:178)
> at scala.Option.map(Option.scala:146)
> at
> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1.apply(TorrentBroadcast.scala:178)
> at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1276)
> at
> org.apache.spark.broadcast.TorrentBroadcast.readBroadcastBlock(TorrentBroadcast.scala:174)
> at
> org.apache.spark.broadcast.TorrentBroadcast._value$lzycompute(TorrentBroadcast.scala:65)
> at
> org.apache.spark.broadcast.TorrentBroadcast._value(TorrentBroadcast.scala:65)
> at
> org.apache.spark.broadcast.TorrentBroadcast.getValue(TorrentBroadcast.scala:89)
> at org.apache.spark.broadcast.Broadcast.value(Broadcast.scala:70)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:72)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:47)
> at org.apache.spark.scheduler.Task.run(Task.scala:86)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> 17/08/09 19:27:43 INFO UnifiedMemoryManager: Will not store broadcast_5 as
> the required space (1048576 bytes) exceeds our memory limit (878230 bytes)
> 17/08/09 19:27:43 WARN MemoryStore: Failed to reserve initial memory
> threshold of 1024.0 KB for computing block broadcast_5 in memory.
> 17/08/09 19:27:43 WARN MemoryStore: Not enough space to cache broadcast_5 in
> memory! (computed 384.0 B so far)
> 17/08/09 19:27:43 INFO MemoryStore: Memory use = 857.6 KB (blocks) + 0.0 B
> (scratch space shared across 0 tasks(s)) = 857.6 KB. Storage limit = 857.6 KB.
> 17/08/09 19:27:43 ERROR Utils: Exception encountered
> java.util.NoSuchElementException
> at
> org.apache.spark.util.collection.PrimitiveVector$$anon$1.next(PrimitiveVector.scala:58)
> at
> org.apache.spark.storage.memory.PartiallyUnrolledIterator.next(MemoryStore.scala:697)
> at
> org.apache.spark.util.CompletionIterator.next(CompletionIterator.scala:30)
> at
> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1$$anonfun$2.apply(TorrentBroadcast.scala:178)
> at
> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1$$anonfun$2.apply(TorrentBroadcast.scala:178)
> at scala.Option.map(Option.scala:146)
> at
> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1.apply(TorrentBroadcast.scala:178)
> at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1276)
> at
> org.apache.spark.broadcast.TorrentBroadcast.readBroadcastBlock(TorrentBroadcast.scala:174)
> at
> org.apache.spark.broadcast.TorrentBroadcast._value$lzycompute(TorrentBroadcast.scala:65)
> at
> org.apache.spark.broadcast.TorrentBroadcast._value(TorrentBroadcast.scala:65)
> at
> org.apache.spark.broadcast.TorrentBroadcast.getValue(TorrentBroadcast.scala:89)
> at org.apache.spark.broadcast.Broadcast.value(Broadcast.scala:70)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:72)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:47)
> at org.apache.spark.scheduler.Task.run(Task.scala:86)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> ```
> This exception is caused in `MemoryStore.putIteratorAsValues()`. When
> `keepUnrolling` is false in the first time, the `vector: SizeTrackingVector`
> is not null and is empty. So when call the iterator method of `vector`, it
> throws this exception.
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