[fix][client] Fix race-condition causing doReconsumeLater hang up when create retryLetterProducer is failed #23560
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Motivation
When
retryLetterProducer
creation fails,retryLetterProducer
will be set to null. SoretryLetterProducer==null
may occur when race-condition is present, at this time, the results cannot be completed.Only handle the situation when retryLetterProducer is not equal to null:
pulsar/pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerImpl.java
Line 678 in 3f12269
Modifications
When
retryLetterProducer==null
, mark the result as an completeExceptionally.Documentation
doc
doc-required
doc-not-needed
doc-complete