Aaron Beitch created HBASE-29038:
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Summary: NPE in processRS.jsp due to failure to get value from
MBean
Key: HBASE-29038
URL: https://issues.apache.org/jira/browse/HBASE-29038
Project: HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 2.5.10
Reporter: Aaron Beitch
Fetching processRS.jsp from a RegionServer occasionally causes a
NullPointerException.
First an ERROR is reported that JSONMetricUtil is unable to get a value from
MBean, "pauseWarnThresholdExceeded" and then there is an NPE rendering the page
on the line that tries to cast that MBean value to a long.
{code:java}
ERROR [qtp1510333744-119] util.JSONMetricUtil: Unable to get value from MBean=
Hadoop:service=HBase,name=RegionServer,sub=Serverfor
attribute=pauseWarnThresholdExceeded
Hadoop:service=HBase,name=RegionServer,sub=Server
WARN [qtp1510333744-119] server.HttpChannel: /processRS.jsp
java.lang.NullPointerException
at
org.apache.hadoop.hbase.generated.regionserver.processRS_jsp._jspService(processRS_jsp.java:83)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1450)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1656)
at
org.apache.hadoop.hbase.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:117)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
at
org.apache.hadoop.hbase.http.SecurityHeadersFilter.doFilter(SecurityHeadersFilter.java:65)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
at
org.apache.hadoop.hbase.http.ClickjackingPreventionFilter.doFilter(ClickjackingPreventionFilter.java:49)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
at
org.apache.hadoop.hbase.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1521)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
at
org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:47)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:552)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:772)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.Server.handle(Server.java:516)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
at
org.apache.hbase.thirdparty.org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
at java.base/java.lang.Thread.run(Unknown Source) {code}
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