Description

Add an exclusive lock on the queue when upload process reads and writes the queue.
Besides, when upload the first segments, return and wait for 20 seconds to make sure that can get the query biv.

Related Issues

fix #116

Who Can Review?

@timerring

Checklist

• Code has been reviewed
• Code complies with the project's code standards and best practices
• Code has passed all tests
• Code does not affect the normal use of existing features
• Code has been commented properly
• Documentation has been updated (if applicable)
• Demo/checkpoint has been attached (if applicable)