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https://issues.apache.org/jira/browse/STORM-2043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim updated STORM-2043:
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Fix Version/s: (was: 1.0.2)
> 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
> Labels: patch, performance
> Original Estimate: 672h
> Remaining Estimate: 672h
>
> 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.
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