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From Patrick Hunt <ph...@apache.org>
Subject Re: how to set the starting value of the created sequence?
Date Tue, 15 Nov 2011 04:57:59 GMT
How about using something like this instead?
http://svn.apache.org/viewvc/incubator/flume/trunk/flume-core/src/main/java/com/cloudera/flume/master/ZooKeeperCounter.java?view=markup

A second option would be to store the offset as the data for the znode
(or in the parent), etc...

Patrick

On Mon, Nov 14, 2011 at 7:29 PM, Camille Fournier <camille@apache.org> wrote:
> As far as I know this is based on information stored by the server in
> the parent node, and is not settable by the user.
>
> On Mon, Nov 14, 2011 at 10:10 PM, Yuhan Zhang <yzhang@onescreen.com> wrote:
>> Hi all,
>>
>> I'd like to create a distributed unique int key with zookeeper sequential
>> by:
>>     String file = zooKeeper.create( folderPath + "/0", new byte[0],
>> Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL);
>>     String sequence = file.substring(file.lastIndexOf("/")+1);
>> zooKeeper.delete(file, 0);
>>     int id = Integer.parseInt( sequence );
>>
>> It works fine, even though the sequence number may not be adjacent.
>> However, I'd like to have the key to start at a certain value,
>> say 1000, as the ids under 1000 has been in use. Currently I will have to
>> call this function until it generates an id greater than 1000. Is there a
>> way in zooKeeper to set the starting value of the created sequence?
>>
>> Thank you.
>>
>> Yuhan
>>
>

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