[AMBARI-102] Heartbeat installedRoleState is returned to as size of 1 when it should be empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.1.0
• Fix Version/s: 0.1.0
• Component/s: ambari-agent

Environment

Python

• Assignee: Eric Yang
• Reporter: Eric Yang
• Created: 25/Oct/11 23:32
• Updated: 25/Oct/11 23:36
• Resolved: 25/Oct/11 23:36

Description

Instead of sending heartbeat:

{ 
  'responseId' : 123,
  ..
  'installedRoleStates' : []
}

In the java side, installedRoleStates is serialized and have object of size of 1. This is because Jersey already creates empty object to hold the array prior to serialize the empty array. This leads to result of 1 element instead of 0.

The workaround is to not sending empty array as part of heartbeat message, hence the heartbeat looks like:

{
  'responseId' : 123,
  ..
}