Another option is to use the Stat object so you can do a read-modify-write to guarantee that you're writing over the value you read.
On Wed, Sep 24, 2014 at 5:28 PM, Benjamin Jaton <[email protected]> wrote: > It's more a "compare-and-set type operation" but on the same node. > I think I have to do a lock indeed. > > Thanks! > > On Wed, Sep 24, 2014 at 8:35 AM, Jordan Zimmerman < > [email protected]> wrote: > >> There are no ZooKeeper APIs that will allow you to atomically check the >> value of a node and change another node based on that value. You’d need to >> write a recipe for that. i.e. get a lock (InterProcessMutex), get the >> value, change another value, release the lock. >> >> -JZ >> >> >> On September 23, 2014 at 6:48:19 PM, Benjamin Jaton ( >> [email protected]) wrote: >> >> Hello, >> >> I would like to know if there is a way to get the value of a node, update >> it and save it, all in the same transaction. I have been looking for a way >> to do that but no luck. >> Any idea? >> >> Thanks >> Ben >> >> >
