hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-6078) Ability to re-configure hadoop daemons online
Date Thu, 18 Jun 2009 08:20:07 GMT
Ability to re-configure hadoop daemons online

                 Key: HADOOP-6078
                 URL: https://issues.apache.org/jira/browse/HADOOP-6078
             Project: Hadoop Core
          Issue Type: New Feature
          Components: mapred
            Reporter: Amar Kamat

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. 

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message