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Type:
New Feature
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Status: Resolved
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Priority:
Major
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Resolution: Duplicate
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Affects Version/s: None
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Fix Version/s: None
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Component/s: None
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Labels:None
Example :
Like we have bin hadoop mradmin -refreshNodes we should also have bin hadoop mradmin -reconfigure which re-configures mr while the cluster is online. Few parameters like job-expiry-interval etc can be changed in this way without having to restart the whole cluster.
Master, once reconfigured, can ask the slaves to reconfigure (reload its config) from a well defined location on hdfs or via heartbeat.
We can have some whitelisted configs that have reloadable property.
- is duplicated by
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HADOOP-7001 Allow configuration changes without restarting configured nodes
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- Closed
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