[APLO-309] Messages can be counted multiple times in topic-metrics

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Do
• Fix Version/s: 1.8
• Environment: apollo-99-trunk-20130221.165856-207
• Assignee: Unassigned
• Reporter: Lionel Cons
• Created: 15/Mar/13 10:46
• Updated: 06/Apr/22 19:16
• Resolved: 06/Apr/22 19:16

Description

When using dsubs with wildcard subscriptions the messages are counted multiple times in the aggregated statistics.

With the following configuration:

<topic id="foo.1"/>
<topic id="foo.2"/>
<dsub id="bar" topic="foo.*"/>

I send one message to /topic/foo.1.

Using the REST API, I can get individual topic metrics:

'id' => 'foo.1',
'dsubs' => [
'bar'
],
'metrics' =>

{ 'dequeue_item_counter' => 0, 'enqueue_item_counter' => 1, 'queue_items' => 1, 'queue_size' => 134, }

,

So far so good if we assume that the queue_* metrics come from the attached dsub.

'id' => 'foo.2',
'dsubs' => [
'bar'
],
'metrics' =>

{ 'dequeue_item_counter' => 0, 'enqueue_item_counter' => 0, 'queue_items' => 1, 'queue_size' => 134, }

,

Even with no messages received, the "queue" is not empty.

Querying the aggregated statistics (topic-metrics), I see:

'queue_items' => 2,
'queue_size' => 268,

So this single message has been double counted.