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https://issues.apache.org/jira/browse/CASSANDRA-19571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838722#comment-17838722
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Marcus Eriksson commented on CASSANDRA-19571:
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cc [~mmuzaf]
> Avoid ConcurrentModificationException when removing metrics from
> CassandraMetricsRegistry
> -----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-19571
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19571
> Project: Cassandra
> Issue Type: Bug
> Reporter: Marcus Eriksson
> Priority: Normal
>
> Multiple threads can modify the lists in {{CassandraMetricsRegistry}}
> {{ALIASES}} map values. We have seen this CME when removing metrics, but
> could possibly affect other paths using those lists
> Adding a small delay (10ms) when map:ing to {{getMetricName}} in
> {{CassandraMetricsRegistry.remove(name)}} makes this reproduce when running
> {{TransientRangeMovementTest.testLeave}}
> Caused by CASSANDRA-14572
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