Jean Helou created JAMES-3721:
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Summary: Browse on the Pulsar mailqueue fails with
ObjectNotFoundException
Key: JAMES-3721
URL: https://issues.apache.org/jira/browse/JAMES-3721
Project: James Server
Issue Type: Bug
Components: pulsar, Queue
Reporter: Jean Helou
We have identified a couple interrelated issues around the [puslar
mailqueue|https://issues.apache.org/jira/browse/JAMES-3695] :
Upon acknowledging a message, the corresponding mime message was not removed
from the blob store.
Upon fixing that issue (and adding the corresponding verification), we started
getting more failures on the browse (the failures could also be observed on the
remove).
Because of how pulsar works and because we allow parallel processing of
messages, the browse operation can end up reading meta data of messages that
have been removed or acknowledged. The metadata of acknowledged messages is not
immediately purged from pulsar. It is somewhat configurable but for a normally
operating cluster acked messages can [remain readable for
hours|https://pulsar.apache.org/docs/en/cookbooks-retention-expiry/#delete-messages-from-namespaces]
(and forcing that to the order of seconds would badly affect the cluster
operation)
We chose to catch the specific exception and simply ignore the corresponding
mails during the browse operation.
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