[jira] [Commented] (SPARK-7716) SparkUI stage page hangs with many tasks

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-7716?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14619185#comment-14619185 ] 

Apache Spark commented on SPARK-7716:
-------------------------------------

User 'andrewor14' has created a pull request for this issue:
https://github.com/apache/spark/pull/7296

> SparkUI stage page hangs with many tasks
> ----------------------------------------
>
>                 Key: SPARK-7716
>                 URL: https://issues.apache.org/jira/browse/SPARK-7716
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Web UI
>    Affects Versions: 1.4.0
>            Reporter: Andrew Or
>            Assignee: Andrew Or
>            Priority: Critical
>
> While running the following, I checked the stage page on the SparkUI:
> {code}
> sc.parallelize(1 to 5000, 10000).count()
> {code}
> Then I get
> {code}
> HTTP ERROR 500
> Problem accessing /stages/stage/. Reason:
>     Server Error
> Caused by:
> java.lang.OutOfMemoryError: Java heap space
> 	at java.util.Arrays.copyOf(Arrays.java:2367)
> 	at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
> 	at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
> 	at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:587)
> 	at java.lang.StringBuilder.append(StringBuilder.java:214)
> {code}
> This is because end up concatenating all the scala XML nodes into raw strings and shipping them to the UI through Jetty. The long-term correct fix would be to add pagination, but even adding a compression layer will fix this for most cases.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org