[HIVE-17929] Use sessionId for HoS Remote Driver Client id

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Spark
• Target Version/s: 3.0.0
• Assignee: Sahil Takiar
• Reporter: Sahil Takiar
• Created: 28/Oct/17 22:49
• Updated: 22/May/18 23:15
• Resolved: 03/Jan/18 19:47

Description

Each SparkClientImpl creates a client connection using a client id. The client id is created via UUID.randomUUID().

Since each HoS session has a single client connection we should just use the sessionId instead (which is also a UUID). This should help simplify the code and some of the client logging.