[jira] [Created] (SPARK-30686) Spark 2.4.4 metrics endpoint throwing error

["Behroz Sikander (Jira)" <ji...@apache.org>]

Behroz Sikander created SPARK-30686:
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             Summary: Spark 2.4.4 metrics endpoint throwing error
                 Key: SPARK-30686
                 URL: https://issues.apache.org/jira/browse/SPARK-30686
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.4.4
            Reporter: Behroz Sikander


I am using Spark-standalone in HA mode with zookeeper.

Once the driver is up and running, whenever I try to access the metrics api using the following URL
http://master_address/proxy/app-20200130041234-0123/api/v1/applications
I get the following exception.

It seems that the request never even reaches the spark code. It would be helpful if somebody can help me.

{code:java}
HTTP ERROR 500
Problem accessing /api/v1/applications. Reason:

    Server Error
Caused by:
java.lang.NullPointerException: while trying to invoke the method org.glassfish.jersey.servlet.WebComponent.service(java.net.URI, java.net.URI, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) of a null object loaded from field org.glassfish.jersey.servlet.ServletContainer.webComponent of an object loaded from local variable 'this'
	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:848)
	at org.spark_project.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584)
	at org.spark_project.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
	at org.spark_project.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
	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:493)
	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:539)
	at org.spark_project.jetty.server.HttpChannel.handle(HttpChannel.java:333)
	at org.spark_project.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
	at org.spark_project.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
	at org.spark_project.jetty.io.FillInterest.fillable(FillInterest.java:108)
	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:808)
{code}




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