Yuzhao Chen created STORM-2043:
----------------------------------
Summary: Nimbus should not make assignments crazy when Pacemaker
down
Key: STORM-2043
URL: https://issues.apache.org/jira/browse/STORM-2043
Project: Apache Storm
Issue Type: Improvement
Components: storm-core
Affects Versions: 1.0.0, 1.0.1, 1.0.2, 1.1.0
Environment: CentOS 6.5
Reporter: Yuzhao Chen
Fix For: 1.0.2
When pacemaker goes down, all the heartbeats of workers are lost. These
heartbeats will need a long time to recover even if pacemaker goes up
immediately if it costs dozens of GB memory. During the time worker heartbeats
are not complete，Nimbus will think the workers are died( heartbeat time out ),
and reassign these workers crazily. But actually the workers are healthy, the
reassignment will move in cycles until pacemaker heartbeats recover. During
this time, all the topologies's throughout will goes down. We should avoid
this, because Pacemaker has no HA.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
