You can set a max depth for the tree cache. You should just be able to set a max depth of 1?
On Wed, Oct 21, 2015 at 3:46 PM, Luo Fucong <[email protected]> wrote: > My requirement is building a tree with only one level (root plus its first > level children). TreeCache, however, will build the entire tree with > however many levels the root has. > > So basically, I need a “NodePathChildrenCache” that’s NodeCache + > PathChildrenCache :) > > > 在 2015年10月21日，下午12:37，Jordan Zimmerman <[email protected]> 写道： > > > > Well, that’s not what PathChildrenCache is for. You could start a > NodeCache for the parent node I guess. Or use TreeCache. But, I don’t know > what the use case is so I can’t comment in more detail. > > > > -Jordan > > > >> On Oct 20, 2015, at 11:34 PM, Luo Fucong <[email protected]> wrote: > >> > >> Thanks for the reply. > >> > >> Sorry for the ambiguous meaning of “path node”. By saying “path node”, > I mean the common root node of the children. > >> > >> So PathChildrenCach does store the children nodes Stat, but it does not > store the root node's Stat. > >> > >> For instance, I have created a PathChildrenCach cache = new > PathChildrenCache(“/path/to/node”). > >> I can get the Stat of “/path/to/node/child1”, but I cannot get the Stat > of “/path/to/node” directly from the cache. > >> > >>> 在 2015年10月21日，下午12:18，Jordan Zimmerman <[email protected]> > 写道： > >>> > >>> PathChildrenCache stores the node’s Stat object in the ChildData. So, > all the data you want is there. > >>> > >>> -JZ > >>> > >>>> On Oct 20, 2015, at 11:13 PM, 罗傅聪 <[email protected]> wrote: > >>>> > >>>> Hi all: > >>>> > >>>> I recently went through the PathChildrenCache source code (in > curator-recipes-2.9.0) and found that it does not store the path node’s > “cversion”, which indicating the number of changes to the children of this > znode. (Correct me if I’m wrong.) > >>>> > >>>> I think the “cversion” is a very important version number which > enable us to verify that the PathChildrenCache is really catch up to the > remote zookeeper znodes. > >>>> > >>>> So I’m wondering that: > >>>> > >>>> 1. why the PathChildrenCache does not store “cversion”, or > furthermore, why it does not store the path node’s status? > >>>> > >>>> 2. are there other means I can use to verify that the > PathChildrenCache is not falling behind the remote znodes? > >>>> > >>>> Thanks! > >>> > >> > > > >
