tree 1533c92a5a4c97746d3233426a96198dd270b37d
parent 0cc8b23e4f05dffe01dc30ca9aa8125130797ad7
author Yi Tseng <a86487817@gmail.com> 1494883054 -0700
committer Ray Milkey <ray@onlab.us> 1494967340 +0000

[ONOS-6462] Intent stuck in WITHDRAWING state with FlowObjective intent compiler

Reasons makes Intent stuck in WITHDRAWING state:
1. The patch for CORD-1180 caused next objective queued in the objective
system if there is no next group for that next objective.

2. Default single table pipeline removes next group from flow objective
store when removing forwarding objective.

3. The flow objective Intent installer will remove forwarding objective
first, then remove next objective.

4. The flow objective Intent install will wait until all objective context
completed, however, according to reason 1, 2 and 3, the next objective
will be queued forever since there will be no next group in the store. So
the Intent state will stuck in WITHDRAWING until the Intent manager retry.

To fix this issue, we need to modify default single table pipeline, make it
not remove next group when removing forwarding objective.

Change-Id: Ia51a3361f19b60332ca1a276583cdfc036d93343