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https://issues.apache.org/jira/browse/SPARK-21302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16073532#comment-16073532
]
Jason Pan commented on SPARK-21302:
-----------------------------------
Reproduce steps:
1. run a SparkPI
2. navigate to history server WebUI, works good
3. click "Show incomplete applications", and click the application link
4. navigate to "Executors" or others
5. click Back button of the browser
try this steps several times will occur this issue.
After it happens, history server can not be accessed any more, need restart to
fix.
> history server WebUI show HTTP ERROR 500
> ----------------------------------------
>
> Key: SPARK-21302
> URL: https://issues.apache.org/jira/browse/SPARK-21302
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 2.1.1
> Reporter: Jason Pan
> Attachments: npe.PNG
>
>
> When navigate to history server WebUI, and check incomplete applications,
> show http 500
> Error logs:
> 17/07/05 20:17:44 INFO ApplicationCacheCheckFilter: Application Attempt
> app-20170705201715-0005-0ce78623-38db-4d23-a2b2-8cb45bb3f505/None updated;
> refreshing
> 17/07/05 20:17:44 WARN ServletHandler:
> /history/app-20170705201715-0005-0ce78623-38db-4d23-a2b2-8cb45bb3f505/executors/
> java.lang.NullPointerException
> at
> org.spark_project.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
> at
> org.spark_project.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
> at
> org.spark_project.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
> at
> org.spark_project.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.spark_project.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
> at
> org.spark_project.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.spark_project.jetty.server.Server.handle(Server.java:499)
> at
> org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:311)
> at
> org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> at
> org.spark_project.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
> at
> org.spark_project.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.spark_project.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:785)
> 17/07/05 20:18:00 WARN ServletHandler: /
> java.lang.NullPointerException
> at
> org.spark_project.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
> at
> org.spark_project.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
> at
> org.spark_project.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
> at
> org.spark_project.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.spark_project.jetty.servlets.gzip.GzipHandler.handle(GzipHandler.java:479)
> at
> org.spark_project.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
> at
> org.spark_project.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.spark_project.jetty.server.Server.handle(Server.java:499)
> at
> org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:311)
> at
> org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> at
> org.spark_project.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
> at
> org.spark_project.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.spark_project.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:785)
> 17/07/05 20:18:17 WARN ServletHandler: /
> java.lang.NullPointerException
> at
> org.spark_project.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
> at
> org.spark_project.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
> at
> org.spark_project.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
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