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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (ARTEMIS-1663) Add enhanced message count and size metrics for Queues
Date Tue, 06 Feb 2018 11:50:00 GMT


ASF GitHub Bot commented on ARTEMIS-1663:

Github user cshannon commented on a diff in the pull request:
    --- Diff: artemis-server/src/main/java/org/apache/activemq/artemis/core/paging/cursor/impl/
    @@ -374,8 +403,43 @@ private ItemOper(PageSubscriptionCounterImpl counter, long id, int
add) {
           public void afterCommit(Transaction tx) {
              for (ItemOper oper : operations) {
    -            oper.counter.incrementProcessed(, oper.amount);
    +            oper.counter.incrementProcessed(, oper.amount, oper.size);
    +   private static class PendingCounter {
    +      final long id;
    +      final AtomicInteger count;
    --- End diff --
    What do you mean by atomic updater, do you mean using something like AtomicIntegerFieldUpdater

> Add enhanced message count and size metrics for Queues
> ------------------------------------------------------
>                 Key: ARTEMIS-1663
>                 URL:
>             Project: ActiveMQ Artemis
>          Issue Type: New Feature
>          Components: Broker
>    Affects Versions: 2.4.0
>            Reporter: Christopher L. Shannon
>            Assignee: Christopher L. Shannon
>            Priority: Major
> The purpose of this Jira is to enhance the message count metrics and to add size metrics
for Queues.   By size metrics I mean the encoded size of all the messages (for large messages
this will include body as well).  Right now we track memory usage but it is also very useful
to know exactly how much data is pending on a Queue to be consumed.  
> The scope of this will be support for tracking the count/size of pending messages,
count/size of delivering messages, and count/size of scheduled messages.  For each of these
categories durable size metrics will be tracked as well. The paging store will also support
tracking of size metrics as well.
> These new metrics will be exposed through JMX to allow users to view the statistics. 
Also by tracking these new values it will allow for enhanced features in the future (ie new
flow control options)

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