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https://issues.apache.org/jira/browse/ARTEMIS-2571?focusedWorklogId=357488&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-357488
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ASF GitHub Bot logged work on ARTEMIS-2571:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 10/Dec/19 22:45
Start Date: 10/Dec/19 22:45
Worklog Time Spent: 10m
Work Description: sebthom commented on pull request #2913: ARTEMIS-2571
Remove synchronization of ActiveMQServerImpl#getSessions()
URL: https://github.com/apache/activemq-artemis/pull/2913#discussion_r356319155
##########
File path:
artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/ActiveMQServerImpl.java
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@@ -294,7 +294,7 @@
private FileStoreMonitor fileStoreMonitor;
- private final Map<String, ServerSession> sessions = new
ConcurrentHashMap<>();
+ private final ConcurrentMap<String, ServerSession> sessions = new
ConcurrentHashMap<>();
Review comment:
@michaelandrepearce I attached a testcase to the JIRA issue where I try to
highlight the impact of this PR. I hope this satisfies your request.
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Issue Time Tracking
-------------------
Worklog Id: (was: 357488)
Time Spent: 1h 40m (was: 1.5h)
> Remove unneccessary synchronization in ActiveMQServerImpl
> ---------------------------------------------------------
>
> Key: ARTEMIS-2571
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2571
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Components: Broker, Web Console
> Affects Versions: 2.10.1
> Reporter: Sebastian T
> Priority: Minor
> Attachments: artemis-test.zip
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> The ActiveMQServerImpl sessions field is a ConcurrentHashMap. Synchronizing
> on the ActiveMQServerImpl object to iterate over the map is not necessary.
> ActiveMQServerImpl#getSession, ActiveMQServerImpl#removeSession and
> ActiveMQServerImpl#createSession also work on the sessions field without
> synchronizing on the ActiveMQServerImpl.
> Removing the synchronized keyword on the ActiveMQServerImpl#getSessions()
> methods e.g. improves loading of Connections view, especially when multiple
> administrators are using the UI.
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