DENG FEI created SPARK-25139:
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Summary: PythonRunner#WriterThread released block after TaskRunner
finally block which invoke BlockManager#releaseAllLocksForTask
Key: SPARK-25139
URL: https://issues.apache.org/jira/browse/SPARK-25139
Project: Spark
Issue Type: Bug
Components: Block Manager
Affects Versions: 2.3.1
Reporter: DENG FEI
We run pyspark streaming on YARN, the executor will die caused by the error.
The executor trace log is below:
{noformat}
18/08/17 13:52:20 Executor task launch worker for task 137 DEBUG BlockManager:
Getting local block input-0-1534485138800 18/08/17 13:52:20 Executor task
launch worker for task 137 TRACE BlockInfoManager: Task 137 trying to acquire
read lock for input-0-1534485138800 18/08/17 13:52:20 Executor task launch
worker for task 137 TRACE BlockInfoManager: Task 137 acquired read lock for
input-0-1534485138800 18/08/17 13:52:20 Executor task launch worker for task
137 DEBUG BlockManager: Level for block input-0-1534485138800 is
StorageLevel(disk, memory, 1 replicas) 18/08/17 13:52:20 Executor task launch
worker for task 137 INFO BlockManager: Found block input-0-1534485138800
locally 18/08/17 13:52:20 Executor task launch worker for task 137 INFO
PythonRunner: Times: total = 8, boot = 3, init = 5, finish = 0 18/08/17
13:52:20 stdout writer for python TRACE BlockInfoManager: Task 137 releasing
lock for input-0-1534485138800 18/08/17 13:52:20 Executor task launch worker
for task 137 INFO Executor: 1 block locks were not released by TID = 137:
[input-0-1534485138800] 18/08/17 13:52:20 stdout writer for python ERROR Utils:
Uncaught exception in thread stdout writer for python java.lang.AssertionError:
assertion failed: Block input-0-1534485138800 is not locked for reading 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:769) at
org.apache.spark.storage.BlockManager$$anonfun$1.apply$mcV$sp(BlockManager.scala:540)
at
org.apache.spark.util.CompletionIterator$$anon$1.completion(CompletionIterator.scala:44)
at
org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:33)
at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408) at
scala.collection.Iterator$class.foreach(Iterator.scala:893) at
scala.collection.AbstractIterator.foreach(Iterator.scala:1336) at
org.apache.spark.api.python.PythonRDD$.writeIteratorToStream(PythonRDD.scala:213)
at
org.apache.spark.api.python.PythonRunner$$anon$2.writeIteratorToStream(PythonRunner.scala:407)
at
org.apache.spark.api.python.BasePythonRunner$WriterThread$$anonfun$run$1.apply(PythonRunner.scala:215)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1991) at
org.apache.spark.api.python.BasePythonRunner$WriterThread.run(PythonRunner.scala:170)
18/08/17 13:52:20 stdout writer for python ERROR
SparkUncaughtExceptionHandler: Uncaught exception in thread Thread[stdout
writer for python,5,main]
{noformat}
I think shoud wait WriterThread after Task#run.
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