[jira] [Created] (SPARK-28009) PipedRDD: Block not locked for reading failure

["Douglas Colkitt (JIRA)" <ji...@apache.org>]

Douglas Colkitt created SPARK-28009:
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             Summary: PipedRDD: Block not locked for reading failure
                 Key: SPARK-28009
                 URL: https://issues.apache.org/jira/browse/SPARK-28009
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.4.0
         Environment: Running in a Docker container with Spark 2.4.0 on Linux kernel 4.9.0
            Reporter: Douglas Colkitt


PipedRDD operation fails with the below stack trace. Failure primarily occurs when the STDOUT from the Unix process is small and the STDIN into the Unix process is comparatively much larger.

 

Given the similarity to SPARK-18406, this seems to be due to a race condition when it comes to accessing the block's reader locker. The PipedRDD class implementation spawns STDIN iterator in a separate thread, so that would corroborate the race condition hypothesis.

 

at scala.Predef$.assert(Predef.scala:170)

at org.apache.spark.storage.BlockInfoManager.unlock(BlockInfoManager.scala:299)

at org.apache.spark.storage.BlockManager.releaseLock(BlockManager.scala:842)

at org.apache.spark.storage.BlockManager.releaseLockAndDispose(BlockManager.scala:1610)

at org.apache.spark.storage.BlockManager$$anonfun$2.apply$mcV$sp(BlockManager.scala:621)

at org.apache.spark.util.CompletionIterator$$anon$1.completion(CompletionIterator.scala:44)

at org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:33)

at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37)

at scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:462)

at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:409)

at scala.collection.Iterator$class.foreach(Iterator.scala:891)

at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)

at org.apache.spark.rdd.PipedRDD$$anon$3.run(PipedRDD.scala:145)

Suppressed: java.lang.AssertionError: assertion failed

at scala.Predef$.assert(Predef.scala:156)

at org.apache.spark.storage.BlockInfo.checkInvariants(BlockInfoManager.scala:84)

at org.apache.spark.storage.BlockInfo.readerCount_$eq(BlockInfoManager.scala:66)

at org.apache.spark.storage.BlockInfoManager$$anonfun$releaseAllLocksForTask$2$$anonfun$apply$2.apply(BlockInfoManager.scala:363)

at org.apache.spark.storage.BlockInfoManager$$anonfun$releaseAllLocksForTask$2$$anonfun$apply$2.apply(BlockInfoManager.scala:362)

at scala.Option.foreach(Option.scala:257)

at org.apache.spark.storage.BlockInfoManager$$anonfun$releaseAllLocksForTask$2.apply(BlockInfoManager.scala:362)

at org.apache.spark.storage.BlockInfoManager$$anonfun$releaseAllLocksForTask$2.apply(BlockInfoManager.scala:358)

at scala.collection.Iterator$class.foreach(Iterator.scala:891)

at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)

at org.apache.spark.storage.BlockInfoManager.releaseAllLocksForTask(BlockInfoManager.scala:358)

at org.apache.spark.storage.BlockManager.releaseAllLocksForTask(BlockManager.scala:858)

at org.apache.spark.executor.Executor$TaskRunner$$anonfun$1.apply$mcV$sp(Executor.scala:409)

at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1369)

at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:408)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)



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