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https://issues.apache.org/jira/browse/SPARK-22365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16224452#comment-16224452
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Jakub Dubovsky commented on SPARK-22365:
----------------------------------------
[~srowen] I will look into log for "caused by" entries. Also I think this
happens all the time in my setup so I am able to reproduce it. If it's one time
error I wouldn't bother creating a ticket.
[~guoxiaolongzte] I am willing to do that but I have no idea what do you mean
by snapshot.
I will be slow on debugging this as it is not my top priority now but want to
get it resolved since it prevents me from checking logs on executors while app
is running.
> Spark UI executors empty list with 500 error
> --------------------------------------------
>
> Key: SPARK-22365
> URL: https://issues.apache.org/jira/browse/SPARK-22365
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 2.2.0
> Reporter: Jakub Dubovsky
>
> No data loaded on "execturos" tab in sparkUI with stack trace below. Apart
> from exception I have nothing more. But if I can test something to make this
> easier to resolve I am happy to help.
> {{java.lang.NullPointerException
> at
> org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
> at
> org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
> at
> org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
> at
> org.spark_project.jetty.servlet.ServletHolder.handle(ServletHolder.java:845)
> at
> org.spark_project.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1689)
> at
> org.apache.hadoop.yarn.server.webproxy.amfilter.AmIpFilter.doFilter(AmIpFilter.java:164)
> at
> org.spark_project.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1676)
> at
> org.spark_project.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
> at
> org.spark_project.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
> at
> org.spark_project.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.spark_project.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:461)
> at
> org.spark_project.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
> at
> org.spark_project.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
> at org.spark_project.jetty.server.Server.handle(Server.java:524)
> at
> org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:319)
> at
> org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:253)
> at
> org.spark_project.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
> at
> org.spark_project.jetty.io.FillInterest.fillable(FillInterest.java:95)
> at
> org.spark_project.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
> at
> org.spark_project.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
> at
> org.spark_project.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
> at
> org.spark_project.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
> at
> org.spark_project.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
> at
> org.spark_project.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
> at java.lang.Thread.run(Thread.java:748)}}
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