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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-11620) Add Support for Load Balancing across a group of KMS servers for HA
Date Tue, 24 Feb 2015 09:05:04 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-11620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun Suresh updated HADOOP-11620:
---------------------------------
    Attachment: HADOOP-11620.3.patch

Updating patch to remove single port limitation. The scheme is now :
{noformat}
     kms://<PROTO>@<AUTHORITY>/<PATH>
     
     where :
     - PROTO = http or https
     - AUTHORITY = <HOSTS>[:<PORT>]
     - HOSTS = <HOST>[,<HOSTS>]
     - HOST = <HOSTNAME>[;<PORT>] // Host specific port will over-ride any
                                  // port that might be specified with ':'
     - HOSTNAME = string
     - PORT = integer
{noformat}

Also, to ensure requests from short-lived clients (keyShell etc.) do not all end up going
to the same KMS, the load balancer now initializes with a random index

> Add Support for Load Balancing across a group of KMS servers for HA
> -------------------------------------------------------------------
>
>                 Key: HADOOP-11620
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11620
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: kms
>    Affects Versions: 2.6.0
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: HADOOP-11620.1.patch, HADOOP-11620.2.patch, HADOOP-11620.3.patch
>
>
> This patch needs to add support for :
> * specification of multiple hostnames in the kms key provider uri
> * KMS client to load balance requests across the hosts specified in the kms keyprovider
uri.



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