There is a problem we met:
The hive sql on the hue web page may be re-executed with a different job id automatically.
Sometimes, when this situation happens, the web UI which runs the retried sql may report errors like this: Hue server is probably down (However, the status of hue server is normal, and the web pages on other clients work well )，
or sometimes the web page would do not response after clicking the "cancel" button while the sql re-executing.
The retried sql usually would be repeated in a period of nearlly 100 seconds.
Additionally, there are no apparent errors or exceptions found in the hiveserver2 logs and hue server logs.