spark-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Patrick Wendell <pwend...@gmail.com>
Subject Re: Reproducible deadlock in 1.0.1, possibly related to Spark-1097
Date Mon, 14 Jul 2014 21:44:04 GMT
Hey Cody,

This Jstack seems truncated, would you mind giving the entire stack
trace? For the second thread, for instance, we can't see where the
lock is being acquired.

- Patrick

On Mon, Jul 14, 2014 at 1:42 PM, Cody Koeninger
<cody.koeninger@mediacrossing.com> wrote:
> Hi all, just wanted to give a heads up that we're seeing a reproducible
> deadlock with spark 1.0.1 with 2.3.0-mr1-cdh5.0.2
>
> If jira is a better place for this, apologies in advance - figured talking
> about it on the mailing list was friendlier than randomly (re)opening jira
> tickets.
>
> I know Gary had mentioned some issues with 1.0.1 on the mailing list, once
> we got a thread dump I wanted to follow up.
>
> The thread dump shows the deadlock occurs in the synchronized block of code
> that was changed in HadoopRDD.scala, for the Spark-1097 issue
>
> Relevant portions of the thread dump are summarized below, we can provide
> the whole dump if it's useful.
>
> Found one Java-level deadlock:
> =============================
> "Executor task launch worker-1":
>   waiting to lock monitor 0x00007f250400c520 (object 0x00000000fae7dc30, a
> org.apache.hadoop.co
> nf.Configuration),
>   which is held by "Executor task launch worker-0"
> "Executor task launch worker-0":
>   waiting to lock monitor 0x00007f2520495620 (object 0x00000000faeb4fc8, a
> java.lang.Class),
>   which is held by "Executor task launch worker-1"
>
>
> "Executor task launch worker-1":
>         at
> org.apache.hadoop.conf.Configuration.reloadConfiguration(Configuration.java:791)
>         - waiting to lock <0x00000000fae7dc30> (a
> org.apache.hadoop.conf.Configuration)
>         at
> org.apache.hadoop.conf.Configuration.addDefaultResource(Configuration.java:690)
>         - locked <0x00000000faca6ff8> (a java.lang.Class for
> org.apache.hadoop.conf.Configurati
> on)
>         at
> org.apache.hadoop.hdfs.HdfsConfiguration.<clinit>(HdfsConfiguration.java:34)
>         at
> org.apache.hadoop.hdfs.DistributedFileSystem.<clinit>(DistributedFileSystem.java:110
> )
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>         at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.
> java:57)
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>         at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.
> java:57)
>         at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAcces
> sorImpl.java:45)
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
>         at java.lang.Class.newInstance0(Class.java:374)
>         at java.lang.Class.newInstance(Class.java:327)
>         at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:373)
>         at java.util.ServiceLoader$1.next(ServiceLoader.java:445)
>         at
> org.apache.hadoop.fs.FileSystem.loadFileSystems(FileSystem.java:2364)
>         - locked <0x00000000faeb4fc8> (a java.lang.Class for
> org.apache.hadoop.fs.FileSystem)
>         at
> org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2375)
>         at
> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2392)
>         at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:89)
>         at
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2431)
>         at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2413)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:368)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:167)
>         at
> org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:587)
>         at
> org.apache.hadoop.mapred.FileInputFormat.setInputPaths(FileInputFormat.java:315)
>         at
> org.apache.hadoop.mapred.FileInputFormat.setInputPaths(FileInputFormat.java:288)
>         at
> org.apache.spark.SparkContext$$anonfun$22.apply(SparkContext.scala:546)
>         at
> org.apache.spark.SparkContext$$anonfun$22.apply(SparkContext.scala:546)
>         at
> org.apache.spark.rdd.HadoopRDD$$anonfun$getJobConf$1.apply(HadoopRDD.scala:145)
>
>
>
> ...elided...
>
>
> "Executor task launch worker-0" daemon prio=10 tid=0x0000000001e71800
> nid=0x2d97 waiting for monitor entry [0x00007f24d2bf1000]
>    java.lang.Thread.State: BLOCKED (on object monitor)
>         at
> org.apache.hadoop.fs.FileSystem.loadFileSystems(FileSystem.java:2362)
>         - waiting to lock <0x00000000faeb4fc8> (a java.lang.Class for
> org.apache.hadoop.fs.FileSystem)
>         at
> org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2375)
>         at
> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2392)
>         at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:89)
>         at
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2431)
>         at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2413)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:368)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:167)
>         at
> org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:587)
>         at
> org.apache.hadoop.mapred.FileInputFormat.setInputPaths(FileInputFormat.java:315)
>         at
> org.apache.hadoop.mapred.FileInputFormat.setInputPaths(FileInputFormat.java:288)
>         at
> org.apache.spark.SparkContext$$anonfun$22.apply(SparkContext.scala:546)
>         at
> org.apache.spark.SparkContext$$anonfun$22.apply(SparkContext.scala:546)
>         at
> org.apache.spark.rdd.HadoopRDD$$anonfun$getJobConf$1.apply(HadoopRDD.scala:145)

Mime
View raw message