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From "Jeff Hammerbacher (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6959) Provisioning of long running Services via HOD
Date Mon, 20 Sep 2010 05:10:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12912352#action_12912352
] 

Jeff Hammerbacher commented on HADOOP-6959:
-------------------------------------------

Why should we reuse HOD for this purpose? Mesos (http://github.com/mesos/mesos) seems like
a more actively developed place to start.

> Provisioning of long running Services via HOD
> ---------------------------------------------
>
>                 Key: HADOOP-6959
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6959
>             Project: Hadoop Common
>          Issue Type: New Feature
>         Environment: Should work on any environment
>            Reporter: Saikat Kanjilal
>            Priority: Minor
>   Original Estimate: 60h
>  Remaining Estimate: 60h
>
> Work on a computation model for services on the grid. The model would include:
> Various tools for defining clients and servers of the service, and at the least a C++
and Java instantiation of the abstractions
> Logical definitions of how to partition work onto a set of servers, i.e. a generalized
shard implementation
> A few useful abstractions like locks (exclusive and RW, fairness), leader election, transactions,
> Various communication models for groups of servers belonging to a service, such as broadcast,
unicast, etc.
> Tools for assuring QoS, reliability, managing pools of servers for a service with spares,
etc.
> Integration with HDFS for persistence, as well as access to local filesystems
> Integration with ZooKeeper so that applications can use the namespace

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