[HIVE-16082] Allow user to change number of listener thread in LlapTaskCommunicator

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.2.0
• Labels: TODOC2.2
• Assignee: Zhiyuan Yang
• Reporter: Zhiyuan Yang
• Created: 02/Mar/17 01:21
• Updated: 25/Jul/17 20:04
• Resolved: 03/Mar/17 21:58

Description

Now LlapTaskCommunicator always has same number of RPC listener thread with TezTaskCommunicatorImpl. There are scenarios when we want them different: for example, in Llap only mode, we want less TezTaskCommunicatorImpl's listener thread to reduce off-heap memory usage.