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https://issues.apache.org/jira/browse/PHOENIX-5101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16826347#comment-16826347
]
William Shen commented on PHOENIX-5101:
---------------------------------------
[~karanmehta93], thank you for taking a look.
I am running the server on hbase-1.2.12 with apache-phoenix-4.14.2-HBase-1.2,
and I am using apache-phoenix-4.14.2-HBase-1.2 client, which I believe is using
hbase-1.2.5 client underneath. The set up is a Java program, using JDBC
connection, with metrics enabled, selecting from a table size of 1000000 with a
limit of 400000.
I agree that we should not default to the the null check approach... The NPE
seems to occur when the expected query size is above some threshold that the
query behavior changed and triggered something incorrectly around closing and
resetting of the metrics, and it would be good to track that down for a fix.
I am going to set up the debugger too, and see if I can find the difference.
> 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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