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https://issues.apache.org/jira/browse/RATIS-789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016798#comment-17016798
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Attila Doroszlai commented on RATIS-789:
----------------------------------------
Hi [~elek], can you please review?
> ConcurrentModification in MetricsRegistriesImpl
> -----------------------------------------------
>
> Key: RATIS-789
> URL: https://issues.apache.org/jira/browse/RATIS-789
> Project: Ratis
> Issue Type: Bug
> Components: metrics
> Reporter: Attila Doroszlai
> Assignee: Attila Doroszlai
> Priority: Major
> Attachments: RATIS-789.001.patch
>
>
> {code}
> java.util.ConcurrentModificationException
> at java.util.ArrayList.forEach(ArrayList.java:1260)
> at
> org.apache.ratis.metrics.impl.MetricRegistriesImpl.lambda$create$1(MetricRegistriesImpl.java:66)
> at
> org.apache.ratis.metrics.impl.RefCountingMap.lambda$put$0(RefCountingMap.java:51)
> at
> java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1853)
> at
> org.apache.ratis.metrics.impl.RefCountingMap.put(RefCountingMap.java:46)
> at
> org.apache.ratis.metrics.impl.MetricRegistriesImpl.create(MetricRegistriesImpl.java:59)
> at
> org.apache.ratis.server.metrics.RatisMetrics.create(RatisMetrics.java:45)
> at
> org.apache.ratis.server.metrics.RatisMetrics.getMetricRegistryForLogAppender(RatisMetrics.java:82)
> at
> org.apache.ratis.server.metrics.LogAppenderMetrics.<init>(LogAppenderMetrics.java:32)
> at org.apache.ratis.server.impl.LeaderState.<init>(LeaderState.java:221)
> at
> org.apache.ratis.server.impl.RoleInfo.startLeaderState(RoleInfo.java:94)
> at
> org.apache.ratis.server.impl.RaftServerImpl.changeToLeader(RaftServerImpl.java:348)
> at
> org.apache.ratis.server.impl.LeaderElection.askForVotes(LeaderElection.java:238)
> at
> org.apache.ratis.server.impl.LeaderElection.run(LeaderElection.java:161)
> {code}
> (RATIS-788 has more details, if needed)
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