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Ryan Williams commented on SPARK-16599: --------------------------------------- I've been running into this lately, and I just [made a minimal repro here|https://github.com/ryan-williams/spark-bugs/tree/msc]; [direct link to source file here|https://github.com/ryan-williams/spark-bugs/blob/msc/src/main/scala/com/foo/Main.scala]. - I enable {{spark.driver.allowMultipleContexts}} (I often enable it in tests) - make my app's {{SparkContext}} - cause a second {{SparkContext}} to be created by referencing a singleton which creates a {{SparkContext}} -- aside: this second {{SparkContext}}-creation was accidental in my real code that triggered this bug - make a {{Broadcast}} and {{RDD}} with the first {{SparkContext}} - {{map}} over that {{RDD}} referencing the {{Broadcast}} - when this job is run, I get fatal BlockManager errors: {code} org.apache.spark.SparkException: Failed to get broadcast_0_piece0 of broadcast_0 at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$org$apache$spark$broadcast$TorrentBroadcast$$readBlocks$1.apply$mcVI$sp(TorrentBroadcast.scala:178) at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$org$apache$spark$broadcast$TorrentBroadcast$$readBlocks$1.apply(TorrentBroadcast.scala:150) at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$org$apache$spark$broadcast$TorrentBroadcast$$readBlocks$1.apply(TorrentBroadcast.scala:150) at scala.collection.immutable.List.foreach(List.scala:381) at org.apache.spark.broadcast.TorrentBroadcast.org$apache$spark$broadcast$TorrentBroadcast$$readBlocks(TorrentBroadcast.scala:150) at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1.apply(TorrentBroadcast.scala:218) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1269) {code} {code} 17/07/22 02:08:11 ERROR Executor: Exception in task 1.0 in stage 0.0 (TID 1) java.util.NoSuchElementException: None.get at scala.None$.get(Option.scala:347) at scala.None$.get(Option.scala:345) at org.apache.spark.storage.BlockInfoManager.releaseAllLocksForTask(BlockInfoManager.scala:343) at org.apache.spark.storage.BlockManager.releaseAllLocksForTask(BlockManager.scala:670) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:289) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) {code} I haven't really tried to track down what interaction with multiple {{SparkContext}}'s might be broken, but I suppose something in the block-management plumbing is holding on to a reference to the last-created {{SparkContext}}, or something like that? > java.util.NoSuchElementException: None.get at at > org.apache.spark.storage.BlockInfoManager.releaseAllLocksForTask(BlockInfoManager.scala:343) > ---------------------------------------------------------------------------------------------------------------------------------------------- > > Key: SPARK-16599 > URL: https://issues.apache.org/jira/browse/SPARK-16599 > Project: Spark > Issue Type: Bug > Affects Versions: 2.0.0 > Environment: centos 6.7 spark 2.0 > Reporter: binde > > run a spark job with spark 2.0, error message > Job aborted due to stage failure: Task 0 in stage 821.0 failed 4 times, most > recent failure: Lost task 0.3 in stage 821.0 (TID 1480, e103): > java.util.NoSuchElementException: None.get > at scala.None$.get(Option.scala:347) > at scala.None$.get(Option.scala:345) > at > org.apache.spark.storage.BlockInfoManager.releaseAllLocksForTask(BlockInfoManager.scala:343) > at > org.apache.spark.storage.BlockManager.releaseAllLocksForTask(BlockManager.scala:644) > at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:281) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:745) -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org