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https://issues.apache.org/jira/browse/SPARK-5841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14324691#comment-14324691
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Yin Huai commented on SPARK-5841:
---------------------------------
[~matt.whelan] I noticed that after SQL unit tests, the following will be logged
{code}
10:59:28.721 ERROR org.apache.spark.util.Utils: Uncaught exception in thread
delete Spark local dirs
java.lang.IllegalStateException: Shutdown in progress
at
java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.java:82)
at java.lang.Runtime.removeShutdownHook(Runtime.java:239)
at
org.apache.spark.storage.DiskBlockManager.stop(DiskBlockManager.scala:151)
at
org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply$mcV$sp(DiskBlockManager.scala:141)
at
org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply(DiskBlockManager.scala:139)
at
org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply(DiskBlockManager.scala:139)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1613)
at
org.apache.spark.storage.DiskBlockManager$$anon$1.run(DiskBlockManager.scala:139)
Exception in thread "delete Spark local dirs" java.lang.IllegalStateException:
Shutdown in progress
at
java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.java:82)
at java.lang.Runtime.removeShutdownHook(Runtime.java:239)
at
org.apache.spark.storage.DiskBlockManager.stop(DiskBlockManager.scala:151)
at
org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply$mcV$sp(DiskBlockManager.scala:141)
at
org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply(DiskBlockManager.scala:139)
at
org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply(DiskBlockManager.scala:139)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1613)
at
org.apache.spark.storage.DiskBlockManager$$anon$1.run(DiskBlockManager.scala:139)
{code}
Seems the log is related to this commit. Is it expected? You can try "test-only
org.apache.spark.sql.sources.InsertSuite" to see it.
> Memory leak in DiskBlockManager
> -------------------------------
>
> Key: SPARK-5841
> URL: https://issues.apache.org/jira/browse/SPARK-5841
> Project: Spark
> Issue Type: Bug
> Components: Block Manager
> Affects Versions: 1.2.1
> Reporter: Matt Whelan
> Assignee: Matt Whelan
> Fix For: 1.3.0
>
>
> DiskBlockManager registers a Runtime shutdown hook, which creates a hard
> reference to the entire Driver ActorSystem. If a long-running JVM repeatedly
> creates and destroys SparkContext instances, it leaks memory.
> I suggest we deregister the shutdown hook if DiskBlockManager.stop is called.
> It's redundant at that point.
> PR coming.
> See also
> http://mail-archives.apache.org/mod_mbox/spark-user/201501.mbox/%3CCA+kjH+w_DDTEBE9XB6NrPxLTUXD=nc_d-3ogxtumk_5v-e0...@mail.gmail.com%3E
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