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https://issues.apache.org/jira/browse/STORM-2083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Joseph Evans reassigned STORM-2083:
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Assignee: Howard Lee
> Blacklist Scheduler
> -------------------
>
> Key: STORM-2083
> URL: https://issues.apache.org/jira/browse/STORM-2083
> Project: Apache Storm
> Issue Type: New Feature
> Components: storm-core
> Reporter: Howard Lee
> Assignee: Howard Lee
> Labels: blacklist, pull-request-available, scheduling
> Time Spent: 17h 50m
> Remaining Estimate: 0h
>
> My company has gone through a fault in production, in which a critical switch
> causes unstable network for a set of machines with package loss rate of
> 30%-50%. In such fault, the supervisors and workers on the machines are not
> definitely dead, which is easy to handle. Instead they are still alive but
> very unstable. They lost heartbeat to the nimbus occasionally. The nimbus, in
> such circumstance, will still assign jobs to these machines, but will soon
> find them invalid again, result in a very slow convergence to stable status.
> To deal with such unstable cases, we intend to implement a blacklist
> scheduler, which will add the unstable nodes (supervisors, slots) to the
> blacklist temporarily, and resume them later.
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