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Posted to commits@cassandra.apache.org by "Ekaterina Dimitrova (Jira)" <ji...@apache.org> on 2021/04/07 19:02:00 UTC

[jira] [Updated] (CASSANDRA-16495) Scheduled (Delayed) Schema Pull Tasks May Run After MIGRATION Stage Shutdown During Decommission

     [ https://issues.apache.org/jira/browse/CASSANDRA-16495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ekaterina Dimitrova updated CASSANDRA-16495:
--------------------------------------------
    Status: Ready to Commit  (was: Review In Progress)

> 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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