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From "Mahadev konar (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-321) optmize session tracking in zookeeper.
Date Wed, 03 Feb 2010 22:43:27 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829303#action_12829303
] 

Mahadev konar commented on ZOOKEEPER-321:
-----------------------------------------

Ben and myself were discussing about session tracking and here is a dump of that discussion
-

-  we would like to optimize session tracking for the most common zookeeper client.  The most
common zookeeper clients is  - a read client that can set watches
- for a client with watches we would need pings as a part of the client library. This is becasue
we need to keep track of server being live or being up to date. So the client to server traffic
would not change at all!
- the traffic from followers to leader will reduce by some (not drastic) amount since we would
be tracking less sessions.

Given the above findings, the amount of work required to do this doesnt really qualify for
the amount of savings we will be making on the network traffic reduction. I would suggest
to close this jira as WONT FIX unless someone else thinks otherwise or plans to work on it...


> optmize session tracking in zookeeper.
> --------------------------------------
>
>                 Key: ZOOKEEPER-321
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-321
>             Project: Zookeeper
>          Issue Type: New Feature
>          Components: c client, java client, server
>            Reporter: Mahadev konar
>            Assignee: Mahadev konar
>             Fix For: 3.3.0
>
>
> sometimes a lot of zookeeper clients are read only. For such clients we do not need the
session tracking in zookeeper. Getting rid of session tracking for such clients will help
us sclae much better.

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