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https://issues.apache.org/jira/browse/ARTEMIS-2368?focusedWorklogId=297225&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-297225
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ASF GitHub Bot logged work on ARTEMIS-2368:
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Author: ASF GitHub Bot
Created on: 19/Aug/19 15:50
Start Date: 19/Aug/19 15:50
Worklog Time Spent: 10m
Work Description: asfgit commented on pull request #2693: ARTEMIS-2368
Fix races on closing consumer
URL: https://github.com/apache/activemq-artemis/pull/2693
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Issue Time Tracking
-------------------
Worklog Id: (was: 297225)
Time Spent: 20m (was: 10m)
> Fix races on closing consumer
> -----------------------------
>
> Key: ARTEMIS-2368
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2368
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: Broker
> Affects Versions: 2.9.0
> Reporter: yangwei
> Priority: Major
> Time Spent: 20m
> Remaining Estimate: 0h
>
> There are some race conditions between closing consumer and session failover:
> # When sending SessionConsumerCloseMessage timeout, conn::fail() is called
> resulting in current consumer is recreated on server side again but removed
> on client side.
> # Between SessionConsumerCloseMessage sending and session::removeConsume(),
> session failover happens resulting in consumer inconsistency.
> # When an iteration over the consumers entrySet is made to recreate consumer
> during session failover process, consumer::close() is called, maybe leading
> to consumer inconsistency or ConcurrentModificationException thrown.
> We traverse through the cloned consumers entrySet, add synchronized block and
> check if consumer is closed while recreating consumer to fix the issue.
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