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  1. Hadoop Map/Reduce
  2. MAPREDUCE-442

Ability to re-configure hadoop daemons online

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    Details

    • Type: New Feature
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      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.

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          is duplicated by

          Task - A task that needs to be done. HADOOP-7001 Allow configuration changes without restarting configured nodes

          • Major - Major loss of function.
          • Closed

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              • Assignee:
                Unassigned
                Reporter:
                amar_kamat Amar Kamat
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                • Created:
                  Updated:
                  Resolved: