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https://issues.apache.org/jira/browse/CASSANDRA-11823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15405187#comment-15405187
 ] 

Stefania commented on CASSANDRA-11823:
--------------------------------------

I think you nailed it [~eribeiro], I agree with your analysis and the patch is 
+1.

I'll run the tests on 3.0 only since the patch up-merged without conflicts, and 
then commit:

||3.0||3.9||trunk||
|[patch|https://github.com/stef1927/cassandra/commits/11823-3.0]|[patch|https://github.com/stef1927/cassandra/commits/11823-3.9]|[patch|https://github.com/stef1927/cassandra/commits/11823]|
|[testall|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-11823-3.0-testall/]|[testall|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-11823-3.9-testall/]|[testall|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-11823-testall/]|
|[dtest|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-11823-3.0-dtest/]|[dtest|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-11823-3.9-dtest/]|[dtest|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-11823-dtest/]|

Thank you for fixing this! :)

> Creating a table leads to a race with GraphiteReporter
> ------------------------------------------------------
>
>                 Key: CASSANDRA-11823
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11823
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Stefano Ortolani
>            Priority: Minor
>              Labels: lhf
>         Attachments: CASSANDRA-11823.patch
>
>
> Happened only on 3/4 nodes out of 13.
> {code:xml}
> INFO  [MigrationStage:1] 2016-05-18 00:34:11,566 ColumnFamilyStore.java:381 - 
> Initializing schema.table
> ERROR [metrics-graphite-reporter-1-thread-1] 2016-05-18 00:34:11,569 
> ScheduledReporter.java:119 - RuntimeException thrown from 
> GraphiteReporter#report. Exception was suppressed.
> java.util.ConcurrentModificationException: null
>       at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) 
> ~[na:1.8.0_91]
>       at java.util.HashMap$KeyIterator.next(HashMap.java:1453) ~[na:1.8.0_91]
>       at 
> org.apache.cassandra.metrics.TableMetrics$33.getValue(TableMetrics.java:690) 
> ~[apache-cassandra-3.0.6.jar:3.0.6]
>       at 
> org.apache.cassandra.metrics.TableMetrics$33.getValue(TableMetrics.java:686) 
> ~[apache-cassandra-3.0.6.jar:3.0.6]
>       at 
> com.codahale.metrics.graphite.GraphiteReporter.reportGauge(GraphiteReporter.java:281)
>  ~[metrics-graphite-3.1.0.jar:3.1.0]
>       at 
> com.codahale.metrics.graphite.GraphiteReporter.report(GraphiteReporter.java:158)
>  ~[metrics-graphite-3.1.0.jar:3.1.0]
>       at 
> com.codahale.metrics.ScheduledReporter.report(ScheduledReporter.java:162) 
> ~[metrics-core-3.1.0.jar:3.1.0]
>       at 
> com.codahale.metrics.ScheduledReporter$1.run(ScheduledReporter.java:117) 
> ~[metrics-core-3.1.0.jar:3.1.0]
>       at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> [na:1.8.0_91]
>       at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) 
> [na:1.8.0_91]
>       at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
>  [na:1.8.0_91]
>       at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
>  [na:1.8.0_91]
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  [na:1.8.0_91]
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  [na:1.8.0_91]
>       at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
> {code}



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