Matthieu Baechler created JAMES-2605:
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Summary: Cassandra MailQueue implementation has a 20% fail rate on
load
Key: JAMES-2605
URL: https://issues.apache.org/jira/browse/JAMES-2605
Project: James Server
Issue Type: Bug
Components: cassandra
Reporter: Matthieu Baechler
RabbitMQ + Cassandra implementation of Mailqueue proved to be brittle, we have
around 20% error rate for SMTP mail delivery under heavy load.
It's probably linked to the heavy use of parallelism into Cassandra Mailqueue
code that can submit an unbounded numer of request for a single Mailqueue
operation.
We should try to remove this unbounded parallelism and check the failure rate
under load.
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