Re: Create node with ancestors?
On 10/05/2010 06:20 PM, David Rosenstrauch wrote: The ZK create method explicitly states in the documentation If the parent node does not exist in the ZooKeeper, a KeeperException with error code KeeperException.NoNode will be thrown. ( (http://hadoop.apache.org/zookeeper/docs/current/api/org/apache/zookeeper/ZooKeeper.html#create%28java.lang.String,%20byte[],%20java.util.List,%20org.apache.zookeeper.CreateMode%29)) As a result, there doesn't appear to be any one single method call that can create a node, along with any missing parent nodes. This would be an incredibly useful API call, though, akin to HDFS' mkdirs method call. (http://hadoop.apache.org/common/docs/r0.20.1/api/org/apache/hadoop/fs/FileSystem.html#mkdirs%28org.apache.hadoop.fs.Path%29) Anybody know if there's a call like this available somewhere in the ZK API? Thanks, DR I guess that's a no. :-( DR
Re: Create node with ancestors?
We just wrote a very simple helper method that splits the path up and creates each parent in the path. Its a total of 5 lines of code. This isn't as efficient as it can be though if you're doing it frequently (which we don't do), but it works for us. ~Jared On Thu, Oct 7, 2010 at 11:35 AM, David Rosenstrauch dar...@darose.net wrote: On 10/05/2010 06:20 PM, David Rosenstrauch wrote: The ZK create method explicitly states in the documentation If the parent node does not exist in the ZooKeeper, a KeeperException with error code KeeperException.NoNode will be thrown. ( (http://hadoop.apache.org/zookeeper/docs/current/api/org/apache/zookeeper/ZooKeeper.html#create%28java.lang.String,%20byte[],%20java.util.List,%20org.apache.zookeeper.CreateMode%29)) As a result, there doesn't appear to be any one single method call that can create a node, along with any missing parent nodes. This would be an incredibly useful API call, though, akin to HDFS' mkdirs method call. (http://hadoop.apache.org/common/docs/r0.20.1/api/org/apache/hadoop/fs/FileSystem.html#mkdirs%28org.apache.hadoop.fs.Path%29) Anybody know if there's a call like this available somewhere in the ZK API? Thanks, DR I guess that's a no. :-( DR
Re: Create node with ancestors?
Yeah, I guess I'll have to whip up something similar. Thanks, DR On 10/07/2010 11:43 AM, Jared Cantwell wrote: We just wrote a very simple helper method that splits the path up and creates each parent in the path. Its a total of 5 lines of code. This isn't as efficient as it can be though if you're doing it frequently (which we don't do), but it works for us. ~Jared On Thu, Oct 7, 2010 at 11:35 AM, David Rosenstrauchdar...@darose.net wrote: On 10/05/2010 06:20 PM, David Rosenstrauch wrote: The ZK create method explicitly states in the documentation If the parent node does not exist in the ZooKeeper, a KeeperException with error code KeeperException.NoNode will be thrown. ( (http://hadoop.apache.org/zookeeper/docs/current/api/org/apache/zookeeper/ZooKeeper.html#create%28java.lang.String,%20byte[],%20java.util.List,%20org.apache.zookeeper.CreateMode%29)) As a result, there doesn't appear to be any one single method call that can create a node, along with any missing parent nodes. This would be an incredibly useful API call, though, akin to HDFS' mkdirs method call. (http://hadoop.apache.org/common/docs/r0.20.1/api/org/apache/hadoop/fs/FileSystem.html#mkdirs%28org.apache.hadoop.fs.Path%29) Anybody know if there's a call like this available somewhere in the ZK API? Thanks, DR I guess that's a no. :-( DR
