my flink job pretends to fail at sink operator, which sends data to mqtt.
I have tried .setBufferTimeout(0) at the one before sink operator and increase parallelism, as you can see in the pic. But it doesn't work. Can anyone help? Thanks.
how to handle back pressure at sink operator in flink
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What sink connector do you use?
What's the batch size of your sink operator?
All these factors will have a relationship with the write performance of your sink.