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https://issues.apache.org/jira/browse/CASSANDRA-16259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17233382#comment-17233382
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Tibor Repasi commented on CASSANDRA-16259:
------------------------------------------
Not in general. First, the bug is hitting only tables having both old and new
SSTables, so it may happen, that a table having old SSTables only will work
until it eventually get a new SSTable. Thus, finding out which tables are
affected now, doesn't mean that in the future no more tables could suffer from
this bug. Second, be aware of the fact that scrubbing a table using LCS will
reset all SSTables to L0, which may have performance implications. Third, you
would need to scrub all nodes, which could lead to data loss, therefore a full
repair after the scrub is advisable on the node before scrubbing the next node.
> tablehistograms cause ArrayIndexOutOfBoundsException
> ----------------------------------------------------
>
> Key: CASSANDRA-16259
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16259
> Project: Cassandra
> Issue Type: Bug
> Components: Observability/Metrics
> Reporter: Justin Montgomery
> Assignee: Benjamin Lerer
> Priority: Normal
> Fix For: 2.2.x, 3.0.x, 3.11.x, 4.0-beta
>
>
> After upgrading some nodes in our cluster from 3.11.8 to 3.11.9 an error
> appeared on the upgraded nodes when trying to access *tablehistograms*. The
> same command run on our .8 nodes return as expected, only the upgraded .9
> nodes fail. Not all tables fail when queried, but about 90% of them do.
> We use Datastax MCAC which appears to query histograms every 30 seconds, this
> outputs to the system.log:
> {noformat}
> WARN [insights-3-1] 2020-11-09 01:11:22,331 UnixSocketClient.java:830 -
> Error reporting:
> java.lang.ArrayIndexOutOfBoundsException: 115
> at
> org.apache.cassandra.metrics.TableMetrics.combineHistograms(TableMetrics.java:261)
> ~[apache-cassandra-3.11.9.jar:3.11.9]
> at
> org.apache.cassandra.metrics.TableMetrics.access$000(TableMetrics.java:48)
> ~[apache-cassandra-3.11.9.jar:3.11.9]
> at
> org.apache.cassandra.metrics.TableMetrics$11.getValue(TableMetrics.java:376)
> ~[apache-cassandra-3.11.9.jar:3.11.9]
> at
> org.apache.cassandra.metrics.TableMetrics$11.getValue(TableMetrics.java:373)
> ~[apache-cassandra-3.11.9.jar:3.11.9]
> at
> com.datastax.mcac.UnixSocketClient.writeMetric(UnixSocketClient.java:839)
> [datastax-mcac-agent.jar:na]
> at
> com.datastax.mcac.UnixSocketClient.access$700(UnixSocketClient.java:78)
> [datastax-mcac-agent.jar:na]
> at
> com.datastax.mcac.UnixSocketClient$2.lambda$onGaugeAdded$0(UnixSocketClient.java:626)
> ~[datastax-mcac-agent.jar:na]
> at
> com.datastax.mcac.UnixSocketClient.writeGroup(UnixSocketClient.java:819)
> [datastax-mcac-agent.jar:na]
> at
> com.datastax.mcac.UnixSocketClient.lambda$restartMetricReporting$2(UnixSocketClient.java:798)
> [datastax-mcac-agent.jar:na]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_272]
> at
> io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:126)
> ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:399)
> ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:307)
> ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
> at
> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
> ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
> at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_272]{noformat}
> Manually trying a histogram from the CLI:
> {noformat}
> $ nodetool tablehistograms logdata log_height_index
> error: 115
> -- StackTrace --
> java.lang.ArrayIndexOutOfBoundsException: 115
> at
> org.apache.cassandra.metrics.TableMetrics.combineHistograms(TableMetrics.java:261)
> at
> org.apache.cassandra.metrics.TableMetrics.access$000(TableMetrics.java:48)
> at
> org.apache.cassandra.metrics.TableMetrics$11.getValue(TableMetrics.java:376)
> at
> org.apache.cassandra.metrics.TableMetrics$11.getValue(TableMetrics.java:373)
> at
> org.apache.cassandra.metrics.CassandraMetricsRegistry$JmxGauge.getValue(CassandraMetricsRegistry.java:250)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:72)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:276)
> at
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
> at
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
> at
> com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
> at
> com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:83)
> at
> com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:206)
> at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
> at
> com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
> at
> com.sun.jmx.remote.security.MBeanServerAccessController.getAttribute(MBeanServerAccessController.java:320)
> at
> javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1445)
> at
> javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
> at
> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)
> at
> javax.management.remote.rmi.RMIConnectionImpl.getAttribute(RMIConnectionImpl.java:639)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
> at sun.rmi.transport.Transport$1.run(Transport.java:200)
> at sun.rmi.transport.Transport$1.run(Transport.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
> at
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
> at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
> at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
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