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! >>> >> >
