Problems encountered during the use of kafka

1
There is a configuration on the consumer side that does not consume, called fetch.message.max.bytes, the default is 1M, if there is a message larger than 1M at this time, it will stop consumption.
At this point, add props.put("fetch.message.max.bytes", "10485760"); to the configuration, and the
exception
ConsumerRebalanceFailedException ensures that rebalance.max.retries * rebalance.backoff.ms > zookeeper.session.timeout.ms (The default is consistent, if there are more machines, or more topics are consumed, it is recommended to set rebalance.max.retries to be larger)