xxd763795151 opened a new issue #2538:
URL: https://github.com/apache/rocketmq/issues/2538
An exception occur when sending trace data, the logs as follows:
```
@Override
public void onException(Throwable e) {
log.info("send trace data ,the traceData is " +
data);
}
```
[log.info("send trace data ,the traceData is " + data)]： this can easily be
mistaken for an ordinary log.
I have sent a lot of message, but I can not find their trace data by the
message id. I spent a lot of time looking for the cause.
I can not see the reason through the log. But when I debug the source code,
I found the failed cause of sending trace data: I enable acl but I forgot to
config the authority of RMQ_SYS_TRACE_TOPIC.
If modify the code as follows(prompt has failed to send):
```
@Override
public void onException(Throwable e) {
log.info("send trace data failed, the traceData is "
+ data);
}
```
or print exception info:
```
@Override
public void onException(Throwable e) {
log.warn("send trace data failed, the traceData is "
+ data, e);
}
```
I think this way is more friendly.
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