Tim Bain created AMQ-5362:
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Summary: Consider a consumer slow if messages expire before it
processes them
Key: AMQ-5362
URL: https://issues.apache.org/jira/browse/AMQ-5362
Project: ActiveMQ
Issue Type: Improvement
Components: Broker
Affects Versions: 5.10.0
Reporter: Tim Bain
If a consumer is consistently consuming messages slower than the producer is
producing them and the messages have an expiration date, messages will
eventually expire before the producer can consume them. When this occurs, the
consumer should be considered slow, but neither of the two existing slow
consumer strategies (AbortSlowConsumerStrategy, which requires undispatched
messages on the broker equal to the consumer's prefetch buffer size, and
AbortSlowAckConsumerStrategy, which requires the consumer to take longer than a
certain amount of time to process any given message) will identify this
slowness and react to it. There are scenarios where they will, but it's easy
to create one where they don't.
This feature would be best implemented along with AMQ-5361, which would allow
us to use more than one slow consumer strategy at the same time, since it's
unlikely that we'd want to use this strategy *instead of* one of the other two.
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