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From "Karan Mehta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-5101) ScanningResultIterator getScanMetrics throws NPE
Date Thu, 25 Apr 2019 04:33:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-5101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16825706#comment-16825706
] 

Karan Mehta commented on PHOENIX-5101:
--------------------------------------

[~willshen] If you encountered the NPE, can you briefly describe the exact environment in
which this can be reproduced (HBase server and client version, phoenix server and client version)
and I can provide some insight after looking into code.

The quick fix is obviously to bring back the null check again for the scanMetricsMap, which
is however not the correct way to do it as far as I understand.

> ScanningResultIterator getScanMetrics throws NPE
> ------------------------------------------------
>
>                 Key: PHOENIX-5101
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5101
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.14.1
>            Reporter: Reid Chan
>            Assignee: Karan Mehta
>            Priority: Major
>             Fix For: 4.15.0, 5.1.0, 4.14.2
>
>         Attachments: PHOENIX-5101.414-HBase-1.4.001.patch
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> {code}
> java.lang.NullPointerException
> 	at org.apache.phoenix.iterate.ScanningResultIterator.getScanMetrics(ScanningResultIterator.java:92)
> 	at org.apache.phoenix.iterate.ScanningResultIterator.close(ScanningResultIterator.java:79)
> 	at org.apache.phoenix.iterate.TableResultIterator.close(TableResultIterator.java:144)
> 	at org.apache.phoenix.iterate.LookAheadResultIterator$1.close(LookAheadResultIterator.java:42)
> 	at org.apache.phoenix.iterate.BaseResultIterators.close(BaseResultIterators.java:1439)
> 	at org.apache.phoenix.iterate.MergeSortResultIterator.close(MergeSortResultIterator.java:44)
> 	at org.apache.phoenix.jdbc.PhoenixResultSet.close(PhoenixResultSet.java:176)
> 	at org.apache.phoenix.jdbc.PhoenixResultSet.next(PhoenixResultSet.java:807)
> 	at org.apache.calcite.avatica.jdbc.JdbcResultSet.frame(JdbcResultSet.java:148)
> 	at org.apache.calcite.avatica.jdbc.JdbcResultSet.create(JdbcResultSet.java:101)
> 	at org.apache.calcite.avatica.jdbc.JdbcResultSet.create(JdbcResultSet.java:81)
> 	at org.apache.calcite.avatica.jdbc.JdbcMeta.prepareAndExecute(JdbcMeta.java:759)
> 	at org.apache.calcite.avatica.remote.LocalService.apply(LocalService.java:206)
> 	at org.apache.calcite.avatica.remote.Service$PrepareAndExecuteRequest.accept(Service.java:927)
> 	at org.apache.calcite.avatica.remote.Service$PrepareAndExecuteRequest.accept(Service.java:879)
> 	at org.apache.calcite.avatica.remote.AbstractHandler.apply(AbstractHandler.java:94)
> 	at org.apache.calcite.avatica.remote.ProtobufHandler.apply(ProtobufHandler.java:46)
> 	at org.apache.calcite.avatica.server.AvaticaProtobufHandler$2.call(AvaticaProtobufHandler.java:123)
> 	at org.apache.calcite.avatica.server.AvaticaProtobufHandler$2.call(AvaticaProtobufHandler.java:121)
> 	at org.apache.phoenix.queryserver.server.QueryServer$PhoenixDoAsCallback$1.run(QueryServer.java:500)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:422)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754)
> 	at org.apache.phoenix.queryserver.server.QueryServer$PhoenixDoAsCallback.doAsRemoteUser(QueryServer.java:497)
> 	at org.apache.calcite.avatica.server.HttpServer$Builder$1.doAsRemoteUser(HttpServer.java:884)
> 	at org.apache.calcite.avatica.server.AvaticaProtobufHandler.handle(AvaticaProtobufHandler.java:120)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:542)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.server.Server.handle(Server.java:499)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> 	at org.apache.phoenix.shaded.org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> 	at java.lang.Thread.run(Thread.java:745)
> {code}



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