Fix lazy partitioned producer might send duplicated messages #342
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Fixes #341
Motivation
When a lazy partitioned producer sends two messages, the flow is:
start
is called to grab the connection viagrab()
.msgSequenceGenerator_
is reset from 1 to 0.Then two messages have the same sequence id.
Modifications
For lazy partitioned producers, if the internal producer is not started, sending the message in the callback of its future.
Add
ChunkDedupTest#testLazyPartitionedProducer
to verify it since only thetests/chunkdedup/docker-compose.yml
enables the deduplication.