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https://issues.apache.org/jira/browse/ARTEMIS-3272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17346123#comment-17346123
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Clebert Suconic commented on ARTEMIS-3272:
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Apparently if you called datasync=false the callbacks are not coming back when
the file is closed.
however I don't think there would be data loss.
I think if you're running with AIO, you should have journal-datasync=true (it
was engineered to use with data-sync = true anyways...
Someone will need to debug the callbacks with datasync=false and come up with a
fix.
> Remaining AIO issue from ARTEMIS-3084
> -------------------------------------
>
> Key: ARTEMIS-3272
> URL: https://issues.apache.org/jira/browse/ARTEMIS-3272
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Affects Versions: 2.16.0, 2.17.0
> Reporter: Anton Roskvist
> Priority: Major
> Attachments: broker.xml, formatted_stack.txt, stack, stack.txt
>
>
> Hi,
> Starting with artemis-2.16.0 I was getting these WARN messages, followed by a
> broker shutdown:
> {quote}
> WARN [org.apache.activemq.artemis.core.server] AMQ222010: Critical IO Error,
> shutting down the server.
> file=AIOSequentialFile:/path/to/artemis-2.16.0/data/journal/activemq-data-2665706.amq,
> message=Timeout on close: java.io.IOException: Timeout on close
> {quote}
> They were not that frequent, maybe once per week or so. I read that this was
> a known issue that was supposed to be resolved in artemis-2.17.0.
> After upgrading I see this WARN message instead, followed by a thread dump:
> {quote}WARN [org.apache.activemq.artemis.journal] File activemq-data-49.amq
> still has pending IO before closing it
> {quote}
> This does not appear to cause any issues as far as I can tell but it is
> printed several times a day so the log is completely cluttered (from the
> thread dump).
> I am attaching one of the thread dumps from my logs here: [^stack]
> In this setup I am running a static broker cluster of 5 brokers, each
> processing messages at about 40-50 Mbps
> Clients are primarily using OpenWire
> ext4 is used as the filesystem
> Br,
> Anton
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