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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/02/26 22:22:45 UTC
[GitHub] gianm commented on issue #7148: The term for "maintenance" nodes
gianm commented on issue #7148: The term for "maintenance" nodes
URL: https://github.com/apache/incubator-druid/issues/7148#issuecomment-467638648
It sounds like the feature in #6349 is a way of telling the coordinator to move all data off a particular historical. "Decommission" seems to be the most popular word to use to describe that kind of operation in other systems I checked just now. It also strikes me as pretty intuitive. So I'd suggest that.
- HDFS calls it decommissioning: https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsDataNodeAdminGuide.html
- So does YARN: https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html
- So does Cassandra: http://cassandra.apache.org/doc/4.0/operating/topo_changes.html#removing-nodes
- So does Kafka (if only to mention that it doesn't have a simple tool to do it): https://kafka.apache.org/documentation/#basic_ops_decommissioning_brokers
- Mesos doesn't; it uses terms like "maintenance" and "draining" (possibly the inspiration for the terminology in #6349): http://mesos.apache.org/documentation/latest/maintenance/
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