Github user HeartSaVioR commented on the issue:
https://github.com/apache/storm/pull/2433
@danny0405
Updated/rebased my patch for supporting old version topology. Manually
tested with 1.2.1-rc topology.
(I needed STORM-2965 to run the topology smoothly but the patch can be
applied separately.)
https://github.com/HeartSaVioR/storm/tree/heartbeats-promotion-v2-support-old-workers
https://github.com/HeartSaVioR/storm/commit/f808e53f91835bab081dd0e02e4ed4ae14f164d1---
