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From Jordan Zimmerman <jor...@jordanzimmerman.com>
Subject Re: Sync question
Date Tue, 05 Nov 2013 19:36:01 GMT
> So it seems there is no mechanism is zookeeper for guaranteeing a read is truly up to
date with the leader. Is this true?

ZooKeeper is an eventually consistent system, not an ACID system. So, true.

On Nov 5, 2013, at 11:31 AM, Adrian Osullivan <adrian.osullivan@db.com> wrote:

> Hi everyone!  The zk API's sync() method brings the server up to date with the leader.
 So the next client read should give the up to date value.  But in the time between completing
the sync and starting the read, another client may have sent an update and the server one
is connected to may again lag the leader.  So it seems there is no mechanism is zookeeper
for guaranteeing a read is truly up to date with the leader. Is this true?
> 
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