[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[ https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16445999#comment-16445999 ] Artem Rudoy edited comment on SPARK-22371 at 4/20/18 4:37 PM: -- Do we really need to throw an exception from AccumulatorContext.get() when an accumulator is garbage collected? There's a period of time when an accumulator has been garbage collected, but hasn't been removed from AccumulatorContext.originals by ContextCleaner. When an update is received for such accumulator it will throw an exception and kill the whole job. This can happen when a stage completed, but there're still running tasks from other attempts, speculation etc. Since AccumulatorContext.get() returns an Option we could just return None in such case. Before SPARK-20940 this method threw IllegalAccessError which is not a NonFatal, was caught at a lower level and didn't cause job failure. was (Author: rudoy): Do we really need to throw an exception from AccumulatorContext.get() when an accumulator is garbage collected? There's a period of time when an accumulator has been garbage collected, but hasn't been removed from AccumulatorContext.originals by ContextCleaner. When an update is received for such accumulator it will throw an exception and kill the whole job. This can happen when a stage completed, but there're still running tasks from other attempts, speculation etc. Since AccumulatorContext.get() returns an Option we could just return None in such case. Before SPARK-20940 this method thrown IllegalAccessError which is not a NonFatal, was caught at a lower level and didn't cause job failure. > dag-scheduler-event-loop thread stopped with error Attempted to access > garbage collected accumulator 5605982 > - > > Key: SPARK-22371 > URL: https://issues.apache.org/jira/browse/SPARK-22371 > Project: Spark > Issue Type: Bug > Components: Spark Core >Affects Versions: 2.1.0 >Reporter: Mayank Agarwal >Priority: Major > Attachments: Helper.scala, ShuffleIssue.java, > driver-thread-dump-spark2.1.txt, sampledata > > > Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler > thread is stopped because of *Attempted to access garbage collected > accumulator 5605982*. > from our investigation it look like accumulator is cleaned by GC first and > same accumulator is used for merging the results from executor on task > completion event. > As the error java.lang.IllegalAccessError is LinkageError which is treated as > FatalError so dag-scheduler loop is finished with below exception. > ---ERROR stack trace -- > Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError: > Attempted to access garbage collected accumulator 5605982 > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253) > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249) > at scala.Option.map(Option.scala:146) > at > org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080) > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) > at > org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080) > at > org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594) > at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) > I am attaching the thread dump of driver as well -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[ https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16402271#comment-16402271 ] Ben Doerr edited comment on SPARK-22371 at 4/17/18 2:04 PM: We've seen this for the first time on 2.3.0. The scenario that [~mayank.agarwal2305] described of jobs running in parallel on datasets and union of all datasets and full gc triggered" sounds exactly like our scenario. We've been unable to upgrade because of this issue. was (Author: craftsman): We've seen this for the first time on 2.3.0. > dag-scheduler-event-loop thread stopped with error Attempted to access > garbage collected accumulator 5605982 > - > > Key: SPARK-22371 > URL: https://issues.apache.org/jira/browse/SPARK-22371 > Project: Spark > Issue Type: Bug > Components: Spark Core >Affects Versions: 2.1.0 >Reporter: Mayank Agarwal >Priority: Major > Attachments: Helper.scala, ShuffleIssue.java, > driver-thread-dump-spark2.1.txt, sampledata > > > Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler > thread is stopped because of *Attempted to access garbage collected > accumulator 5605982*. > from our investigation it look like accumulator is cleaned by GC first and > same accumulator is used for merging the results from executor on task > completion event. > As the error java.lang.IllegalAccessError is LinkageError which is treated as > FatalError so dag-scheduler loop is finished with below exception. > ---ERROR stack trace -- > Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError: > Attempted to access garbage collected accumulator 5605982 > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253) > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249) > at scala.Option.map(Option.scala:146) > at > org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080) > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) > at > org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080) > at > org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594) > at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) > I am attaching the thread dump of driver as well -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[
https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16440683#comment-16440683
]
Andrew Clegg edited comment on SPARK-22371 at 4/17/18 9:53 AM:
---
Another data point -- I've seen this happen (in 2.3.0) during cleanup after a
task failure:
{code:none}
Caused by: org.apache.spark.SparkException: Job aborted due to stage failure:
Exception while getting task result: java.lang.IllegalStateException: Attempted
to access garbage collected accumulator 365
at
org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1599)
at
org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1587)
at
org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1586)
at
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at
org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1586)
at
org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:831)
at
org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:831)
at scala.Option.foreach(Option.scala:257)
at
org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:831)
at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1820)
at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1769)
at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1758)
at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
at
org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:642)
at org.apache.spark.SparkContext.runJob(SparkContext.scala:2027)
at
org.apache.spark.sql.execution.datasources.FileFormatWriter$.write(FileFormatWriter.scala:194)
... 31 more
{code}
was (Author: aclegg):
Another data point -- I've seen this happen (in 2.3.0) during cleanup after a
task failure:
{{Caused by: org.apache.spark.SparkException: Job aborted due to stage failure:
Exception while getting task result: java.lang.IllegalStateException: Attempted
to access garbage collected accumulator 365}}
{{ at
org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1599)}}
{{ at
org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1587)}}
{{ at
org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1586)}}
{{ at
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)}}
{{ at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)}}
{{ at
org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1586)}}
{{ at
org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:831)}}
{{ at
org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:831)}}
{{ at scala.Option.foreach(Option.scala:257)}}
{{ at
org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:831)}}
{{ at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1820)}}
{{ at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1769)}}
{{ at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1758)}}
{{ at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)}}
{{ at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:642)}}
{{ at org.apache.spark.SparkContext.runJob(SparkContext.scala:2027)}}
{{ at
org.apache.spark.sql.execution.datasources.FileFormatWriter$.write(FileFormatWriter.scala:194)}}
{{ ... 31 more}}
> dag-scheduler-event-loop thread stopped with error Attempted to access
> garbage collected accumulator 5605982
> -
>
> Key: SPARK-22371
> URL: https://issues.apache.org/jira/browse/SPARK-22371
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
>Affects Versions: 2.1.0
>Reporter: Mayank Agarwal
>Priority: Major
> Attachments: Helper.scala, ShuffleIssue.java,
> driver-thread-dump-spark2.1.txt, sampledata
>
>
> Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler
> thread is stopped because of *Attempted to access garbage collected
> accumulator 5605982*.
> from our
[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[
https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16292134#comment-16292134
]
Mayank Agarwal edited comment on SPARK-22371 at 12/15/17 9:01 AM:
--
Hi, Sorry for late reply.
>From our analysis this error seems to come when there are jobs running
>parallel on datasets and union of all those datasets and Full GC triggered at
>same time which clears the accumulate of children dataset of union.
I am attaching a small program from which this error comes frequently.
[^ShuffleIssue.java]
[^Helper.scala]
[^sampledata]
Steps for generating sample data
{code:title=Bar.java|borderStyle=solid}
for((i=1472428800;i<=1472947200;i=i+86400));do mkdir -p
output/testdata/eventtime=$i;cp sampledata
output/testdata/eventtime=$i/01_0;cp sampledata
output/testdata/eventtime=$i/01_1;cp sampledata
output/testdata/eventtime=$i/01_2;cp sampledata
output/testdata/eventtime=$i/01_3;done
{code}
was (Author: mayank.agarwal2305):
Hi, Sorry for late reply.
>From our analysis this error seems to come when there are jobs running
>parallel on datasets and union of all those datasets and Full GC triggered at
>same time which clears the accumulate of children dataset of union.
I am attaching a small program from which this error comes frequently.
[^ShuffleIssue.java]
[^Helper.scala]
[^sampledata]
> dag-scheduler-event-loop thread stopped with error Attempted to access
> garbage collected accumulator 5605982
> -
>
> Key: SPARK-22371
> URL: https://issues.apache.org/jira/browse/SPARK-22371
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
>Affects Versions: 2.1.0
>Reporter: Mayank Agarwal
> Attachments: Helper.scala, ShuffleIssue.java,
> driver-thread-dump-spark2.1.txt, sampledata
>
>
> Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler
> thread is stopped because of *Attempted to access garbage collected
> accumulator 5605982*.
> from our investigation it look like accumulator is cleaned by GC first and
> same accumulator is used for merging the results from executor on task
> completion event.
> As the error java.lang.IllegalAccessError is LinkageError which is treated as
> FatalError so dag-scheduler loop is finished with below exception.
> ---ERROR stack trace --
> Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError:
> Attempted to access garbage collected accumulator 5605982
> at
> org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253)
> at
> org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249)
> at scala.Option.map(Option.scala:146)
> at
> org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080)
> at
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
> at
> org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080)
> at
> org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594)
> at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
> I am attaching the thread dump of driver as well
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[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[
https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16292134#comment-16292134
]
Mayank Agarwal edited comment on SPARK-22371 at 12/15/17 9:01 AM:
--
Hi, Sorry for late reply.
>From our analysis this error seems to come when there are jobs running
>parallel on datasets and union of all those datasets and Full GC triggered at
>same time which clears the accumulate of children dataset of union.
I am attaching a small program from which this error comes frequently.
[^ShuffleIssue.java]
[^Helper.scala]
[^sampledata]
Steps for generating sample data
{code:title=UNIX COMMAND |borderStyle=solid}
for((i=1472428800;i<=1472947200;i=i+86400));do mkdir -p
output/testdata/eventtime=$i;cp sampledata
output/testdata/eventtime=$i/01_0;cp sampledata
output/testdata/eventtime=$i/01_1;cp sampledata
output/testdata/eventtime=$i/01_2;cp sampledata
output/testdata/eventtime=$i/01_3;done
{code}
was (Author: mayank.agarwal2305):
Hi, Sorry for late reply.
>From our analysis this error seems to come when there are jobs running
>parallel on datasets and union of all those datasets and Full GC triggered at
>same time which clears the accumulate of children dataset of union.
I am attaching a small program from which this error comes frequently.
[^ShuffleIssue.java]
[^Helper.scala]
[^sampledata]
Steps for generating sample data
{code:title=Bar.java|borderStyle=solid}
for((i=1472428800;i<=1472947200;i=i+86400));do mkdir -p
output/testdata/eventtime=$i;cp sampledata
output/testdata/eventtime=$i/01_0;cp sampledata
output/testdata/eventtime=$i/01_1;cp sampledata
output/testdata/eventtime=$i/01_2;cp sampledata
output/testdata/eventtime=$i/01_3;done
{code}
> dag-scheduler-event-loop thread stopped with error Attempted to access
> garbage collected accumulator 5605982
> -
>
> Key: SPARK-22371
> URL: https://issues.apache.org/jira/browse/SPARK-22371
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
>Affects Versions: 2.1.0
>Reporter: Mayank Agarwal
> Attachments: Helper.scala, ShuffleIssue.java,
> driver-thread-dump-spark2.1.txt, sampledata
>
>
> Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler
> thread is stopped because of *Attempted to access garbage collected
> accumulator 5605982*.
> from our investigation it look like accumulator is cleaned by GC first and
> same accumulator is used for merging the results from executor on task
> completion event.
> As the error java.lang.IllegalAccessError is LinkageError which is treated as
> FatalError so dag-scheduler loop is finished with below exception.
> ---ERROR stack trace --
> Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError:
> Attempted to access garbage collected accumulator 5605982
> at
> org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253)
> at
> org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249)
> at scala.Option.map(Option.scala:146)
> at
> org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083)
> at
> org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080)
> at
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
> at
> org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080)
> at
> org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605)
> at
> org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594)
> at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
> I am attaching the thread dump of driver as well
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[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[ https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16292134#comment-16292134 ] Mayank Agarwal edited comment on SPARK-22371 at 12/15/17 8:56 AM: -- Hi, Sorry for late reply. >From our analysis this error seems to come when there are jobs running >parallel on datasets and union of all those datasets and Full GC triggered at >same time which clears the accumulate of children dataset of union. I am attaching a small program from which this error comes frequently. [^ShuffleIssue.java] [^Helper.scala] [^sampledata] was (Author: mayank.agarwal2305): Hi, Sorry for late reply. >From our analysis this error seems to come when there are jobs running >parallel on datasets and union of all those datasets and Full GC triggered at >same time which clears the accumulate of children dataset of union. I am attaching a small program from which this error comes frequently. [^ShuffleIssue.java] > dag-scheduler-event-loop thread stopped with error Attempted to access > garbage collected accumulator 5605982 > - > > Key: SPARK-22371 > URL: https://issues.apache.org/jira/browse/SPARK-22371 > Project: Spark > Issue Type: Bug > Components: Spark Core >Affects Versions: 2.1.0 >Reporter: Mayank Agarwal > Attachments: Helper.scala, ShuffleIssue.java, > driver-thread-dump-spark2.1.txt, sampledata > > > Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler > thread is stopped because of *Attempted to access garbage collected > accumulator 5605982*. > from our investigation it look like accumulator is cleaned by GC first and > same accumulator is used for merging the results from executor on task > completion event. > As the error java.lang.IllegalAccessError is LinkageError which is treated as > FatalError so dag-scheduler loop is finished with below exception. > ---ERROR stack trace -- > Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError: > Attempted to access garbage collected accumulator 5605982 > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253) > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249) > at scala.Option.map(Option.scala:146) > at > org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080) > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) > at > org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080) > at > org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594) > at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) > I am attaching the thread dump of driver as well -- 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
[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[ https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16292134#comment-16292134 ] Mayank Agarwal edited comment on SPARK-22371 at 12/15/17 7:14 AM: -- Hi, Sorry for late reply. >From our analysis this error seems to come when there are jobs running >parallel on datasets and union of all those datasets and Full GC triggered at >same time which clears the accumulate of children dataset of union. I am attaching a small program from which this error comes frequently. [^ShuffleIssue.java] was (Author: mayank.agarwal2305): [^ShuffleIssue.java] > dag-scheduler-event-loop thread stopped with error Attempted to access > garbage collected accumulator 5605982 > - > > Key: SPARK-22371 > URL: https://issues.apache.org/jira/browse/SPARK-22371 > Project: Spark > Issue Type: Bug > Components: Spark Core >Affects Versions: 2.1.0 >Reporter: Mayank Agarwal > Attachments: ShuffleIssue.java, driver-thread-dump-spark2.1.txt > > > Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler > thread is stopped because of *Attempted to access garbage collected > accumulator 5605982*. > from our investigation it look like accumulator is cleaned by GC first and > same accumulator is used for merging the results from executor on task > completion event. > As the error java.lang.IllegalAccessError is LinkageError which is treated as > FatalError so dag-scheduler loop is finished with below exception. > ---ERROR stack trace -- > Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError: > Attempted to access garbage collected accumulator 5605982 > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253) > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249) > at scala.Option.map(Option.scala:146) > at > org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080) > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) > at > org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080) > at > org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594) > at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) > I am attaching the thread dump of driver as well -- 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
[jira] [Comment Edited] (SPARK-22371) dag-scheduler-event-loop thread stopped with error Attempted to access garbage collected accumulator 5605982
[ https://issues.apache.org/jira/browse/SPARK-22371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16292134#comment-16292134 ] Mayank Agarwal edited comment on SPARK-22371 at 12/15/17 7:13 AM: -- [^ShuffleIssue.java] was (Author: mayank.agarwal2305): Hi, Sorry for late reply. >From our analysis this error seems to come when there are jobs running >parallel on datasets and union of all those datasets and Full GC triggered at >same time which clears the accumulate of children dataset of union. I am attaching a small program from which this error comes frequently. > dag-scheduler-event-loop thread stopped with error Attempted to access > garbage collected accumulator 5605982 > - > > Key: SPARK-22371 > URL: https://issues.apache.org/jira/browse/SPARK-22371 > Project: Spark > Issue Type: Bug > Components: Spark Core >Affects Versions: 2.1.0 >Reporter: Mayank Agarwal > Attachments: ShuffleIssue.java, driver-thread-dump-spark2.1.txt > > > Our Spark Jobs are getting stuck on DagScheduler.runJob as dagscheduler > thread is stopped because of *Attempted to access garbage collected > accumulator 5605982*. > from our investigation it look like accumulator is cleaned by GC first and > same accumulator is used for merging the results from executor on task > completion event. > As the error java.lang.IllegalAccessError is LinkageError which is treated as > FatalError so dag-scheduler loop is finished with below exception. > ---ERROR stack trace -- > Exception in thread "dag-scheduler-event-loop" java.lang.IllegalAccessError: > Attempted to access garbage collected accumulator 5605982 > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:253) > at > org.apache.spark.util.AccumulatorContext$$anonfun$get$1.apply(AccumulatorV2.scala:249) > at scala.Option.map(Option.scala:146) > at > org.apache.spark.util.AccumulatorContext$.get(AccumulatorV2.scala:249) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1083) > at > org.apache.spark.scheduler.DAGScheduler$$anonfun$updateAccumulators$1.apply(DAGScheduler.scala:1080) > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) > at > org.apache.spark.scheduler.DAGScheduler.updateAccumulators(DAGScheduler.scala:1080) > at > org.apache.spark.scheduler.DAGScheduler.handleTaskCompletion(DAGScheduler.scala:1183) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1647) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605) > at > org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594) > at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) > I am attaching the thread dump of driver as well -- 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
