No error message is logged in catch block

[zyx333]

It's better to print error message here for the convenience of debugging.

rocketmq/store/src/main/java/org/apache/rocketmq/store/CommitLog.java

Lines 533 to 537 in 0d1eec2

	return dispatchRequest;
	} catch (Exception e) {
	}
	return new DispatchRequest(-1, false /* success */);

[zyx333]

#4767 solved in this PR

[RongtongJin]

There is no need to print logs here, because rocketmq master-slave replication is is based on streams rather than messages , so it is common to dispatch half messages. If you print logs here, there will be a lot of dirty logs.

[zyx333]

get it.