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Benoy Antony commented on HADOOP-10280: --------------------------------------- [~chrili] Does it makes sense to add ability to plugin a different implementation of _Schedulable_ ? If so , _Call_ implementing _Schedulable_ may not be a good idea. _Call_ could use the configured _Schedulable_ implementation. > Make Schedulables return a configurable identity of user or group > ----------------------------------------------------------------- > > Key: HADOOP-10280 > URL: https://issues.apache.org/jira/browse/HADOOP-10280 > Project: Hadoop Common > Issue Type: Sub-task > Reporter: Chris Li > Assignee: Chris Li > Attachments: HADOOP-10280.patch, HADOOP-10280.patch > > > In order to intelligently schedule incoming calls, we need to know what > identity it falls under. > We do this by defining the Schedulable interface, which has one method, > getIdentity(IdentityType idType) > The scheduler can then query a Schedulable object for its identity, depending > on what idType is. > For example: > Call 1: Made by user=Alice, group=admins > Call 2: Made by user=Bob, group=admins > Call 3: Made by user=Carlos, group=users > Call 4: Made by user=Alice, group=admins > Depending on what the identity is, we would treat these requests differently. > If we query on Username, we can bucket these 4 requests into 3 sets for > Alice, Bob, and Carlos. If we query on Groupname, we can bucket these 4 > requests into 2 sets for admins and users. > In this initial version, idType can be username or primary group. In future > versions, it could be jobID, request class (read or write), or some explicit > QoS field. These are user-defined, and will be reloaded on callqueue refresh. -- This message was sent by Atlassian JIRA (v6.1.5#6160)