[jira] [Commented] (HBASE-24324) NPE from /procedures.jsp on backup master

["Mingliang Liu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-24324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17100553#comment-17100553 ] 

Mingliang Liu commented on HBASE-24324:
---------------------------------------

Is this because MasterProcedureExecutor is null on backup master? I guess we can add a null check.

> NPE from /procedures.jsp on backup master
> -----------------------------------------
>
>                 Key: HBASE-24324
>                 URL: https://issues.apache.org/jira/browse/HBASE-24324
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 2.3.0
>            Reporter: Nick Dimiduk
>            Priority: Major
>
> When going to {{/procedures.jsp}} on a backup master (i.e., a user hits refresh on a window they have open, meanwhile, the active master has flipped over), we throw an NPE back to the user. Instead, we should do practically anything else.
> {noformat}
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.generated.master.procedures_jsp._jspService(procedures_jsp.java:63)
> 	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> 	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:840)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1780)
> 	at org.apache.hadoop.hbase.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:112)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1767)
> 	at org.apache.hadoop.hbase.http.SecurityHeadersFilter.doFilter(SecurityHeadersFilter.java:66)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1767)
> 	at org.apache.hadoop.hbase.http.ClickjackingPreventionFilter.doFilter(ClickjackingPreventionFilter.java:52)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1767)
> 	at org.apache.hadoop.hbase.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1491)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1767)
> 	at org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:50)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1767)
> 	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:583)
> 	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> 	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
> 	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
> 	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
> 	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:513)
> 	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
> 	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
> 	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> 	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
> 	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
> 	at org.eclipse.jetty.server.Server.handle(Server.java:539)
> 	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333)
> 	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
> 	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
> 	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)
> 	at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
> 	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
> 	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
> 	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
> 	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
> 	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
> 	at java.base/java.lang.Thread.run(Thread.java:834)
> {noformat}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)