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https://issues.apache.org/jira/browse/CASSANDRA-10477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15011675#comment-15011675
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Blake Eggleston commented on CASSANDRA-10477:
---------------------------------------------
It seems like adding a paxos commit equivalent of StorageProxy.insertLocal, and
submitting local commits that way would be the safest thing to do here. In
theory, you should be able to add a check against the local address to
StorageProxy.shouldHint and just drop the commit message if the node is
overloaded, it should get back up to speed on the next paxos round. However
there may be subtleties and edge cases that I'm not thinking of, so I don't
want to recommend that without giving this more thought.
> java.lang.AssertionError in StorageProxy.submitHint
> ---------------------------------------------------
>
> Key: CASSANDRA-10477
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10477
> Project: Cassandra
> Issue Type: Bug
> Components: Local Write-Read Paths
> Environment: CentOS 6, Oracle JVM 1.8.45
> Reporter: Severin Leonhardt
> Assignee: Ariel Weisberg
> Fix For: 2.1.x, 2.2.x, 3.0.x, 3.x
>
>
> A few days after updating from 2.0.15 to 2.1.9 we have the following log
> entry on 2 of 5 machines:
> {noformat}
> ERROR [EXPIRING-MAP-REAPER:1] 2015-10-07 17:01:08,041
> CassandraDaemon.java:223 - Exception in thread
> Thread[EXPIRING-MAP-REAPER:1,5,main]
> java.lang.AssertionError: /192.168.11.88
> at
> org.apache.cassandra.service.StorageProxy.submitHint(StorageProxy.java:949)
> ~[apache-cassandra-2.1.9.jar:2.1.9]
> at
> org.apache.cassandra.net.MessagingService$5.apply(MessagingService.java:383)
> ~[apache-cassandra-2.1.9.jar:2.1.9]
> at
> org.apache.cassandra.net.MessagingService$5.apply(MessagingService.java:363)
> ~[apache-cassandra-2.1.9.jar:2.1.9]
> at org.apache.cassandra.utils.ExpiringMap$1.run(ExpiringMap.java:98)
> ~[apache-cassandra-2.1.9.jar:2.1.9]
> at
> org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:118)
> ~[apache-cassandra-2.1.9.jar:2.1.9]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [na:1.8.0_45]
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> [na:1.8.0_45]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> [na:1.8.0_45]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> [na:1.8.0_45]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_45]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_45]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
> {noformat}
> 192.168.11.88 is the broadcast address of the local machine.
> When this is logged the read request latency of the whole cluster becomes
> very bad, from 6 ms/op to more than 100 ms/op according to OpsCenter. Clients
> get a lot of timeouts. We need to restart the affected Cassandra node to get
> back normal read latencies. It seems write latency is not affected.
> Disabling hinted handoff using {{nodetool disablehandoff}} only prevents the
> assert from being logged. At some point the read latency becomes bad again.
> Restarting the node where hinted handoff was disabled results in the read
> latency being better again.
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