After running a search on the apache/hive repository, it looks like the exit code 101 comes from the runSequential()
method in TaskRunner
(link). It appears to be a generic exit code that indicates an error was thrown while trying to execute the task.
The version of Hive you are running is probably older than the source code on GitHub, so you could track down the correct source if you wanted to be sure. But I would be surprised if it was anything except a generic error code.