wangchao316 commented on PR #7263: URL: https://github.com/apache/iotdb/pull/7263#issuecomment-1240599932
> > > Can we see the log like `available replicas: ` before the exception occurs ? > > > > > > there 3 available **datanode: java.lang.IndexOutOfBoundsException: Index: -2, Size: 3** (https://issues.apache.org/jira/browse/IOTDB-4358 exception info), I will find the detail log later. the reason of the issue is that the generated **sessionId is negative** , so [queryContext.getSession().getSessionId() % availableDataNodes.size()] is negative. > > Yes, your analysis is correct. But...it is wired that we got an index `-2` because the sessionId is always positive and the value of mod operation should be in [0, 2]. Why did we got a `-2` here ? Thus I want to know the detailed log here The session ID cannot be automatically incremented. It should be secure random number . In the case of a secure random number, a negative number appears. We're using a secure random number. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
