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From: Robin Bate Boerop <robin.bateboerop@userevents.com>
To: "user@zookeeper.apache.org" <user@zookeeper.apache.org>
Subject: RE: question about lock recipe and watchers
Thread-Topic: question about lock recipe and watchers
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Date: Mon, 17 Sep 2012 18:35:03 +0000
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Phil, thank you for the experience report!=0A=
=0A=
Maybe the website should be updated with this suggestion...=0A=
________________________________________=0A=
From: Phil Carns [carns@mcs.anl.gov]=0A=
Sent: 17 September 2012 15:15=0A=
To: user@zookeeper.apache.org=0A=
Subject: Re: question about lock recipe and watchers=0A=
=0A=
I tried out Michi's suggestion over the weekend and it seems to be=0A=
working great.  I just used a one-byte get() in place of the exists()=0A=
call recommended in the recipe.  I'm actually using wget(), to be=0A=
precise.  The wget() either returns an error immediately (because the=0A=
node has already been deleted) or else returns successfully and queues a=0A=
watcher that triggers when the node is deleted later.  There is no need=0A=
to set a value in the node.=0A=
=0A=
=0A=