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https://issues.apache.org/jira/browse/CASSANDRA-16495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Caleb Rackliffe updated CASSANDRA-16495:
----------------------------------------
Reviewers: Caleb Rackliffe
> Scheduled (Delayed) Schema Pull Tasks May Run After MIGRATION Stage Shutdown
> During Decommission
> ------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-16495
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16495
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Startup and Shutdown
> Reporter: Caleb Rackliffe
> Assignee: Ekaterina Dimitrova
> Priority: Normal
> Fix For: 3.0.x, 3.11.x, 4.0-rc
>
>
> A new test added in CASSANDRA-16181 stumbled across this, although it doesn’t
> happen consistently. When [failure
> occurs|https://app.circleci.com/pipelines/github/maedhroz/cassandra/235/workflows/eb8133ce-9373-4136-b404-ceca167353f6/jobs/1355/tests],
> it appears to be because a delayed schema pull happens after decommission
> shuts down the MIGRATION stage’s thread pool.
> {noformat}
> ERROR [node1_isolatedExecutor:1] node1 2021-02-15 19:35:36,284
> CassandraDaemon.java:579 - Exception in thread
> Thread[node1_NonPeriodicTasks:1,5,node1]
> java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut
> down at
> org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:72)
>
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:825)
>
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1355)
>
> at
> org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.execute(DebuggableThreadPoolExecutor.java:176)
>
> at
> java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118)
> at org.apache.cassandra.concurrent.Stage.submit(Stage.java:129)
> at
> org.apache.cassandra.schema.MigrationCoordinator.lambda$scheduleSchemaPull$2(MigrationCoordinator.java:362)
>
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at
> java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
>
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
>
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
>
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
>
> at java.base/java.lang.Thread.run(Thread.java:834)
> {noformat}
> A fix might be as simple as shutting down ScheduledExecutors.nonPeriodicTasks
> in StorageService#decommission(). See the original discussion
> [here|https://issues.apache.org/jira/browse/CASSANDRA-16181?focusedCommentId=17293329&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-17293329].
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