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Zookeeper >> mail # dev >> recursive delete in multi


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Ted Yu 2013-03-13, 22:54
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Marshall McMullen 2013-03-14, 03:22
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Ted Yu 2013-03-14, 03:25
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Re: recursive delete in multi
I agree, sounds like a good enhancement. And far safer and less
race-condition prone too. Feel free to open a Jira on this as we don't have
one on it yet.
On Wed, Mar 13, 2013 at 9:25 PM, Ted Yu <[EMAIL PROTECTED]> wrote:

> Here is the background for my request.
> In HBase, we use the following code to do clean up:
>
>     ZKUtil.deleteChildrenRecursively(watcher, acquiredZnode);
>
>     ZKUtil.deleteChildrenRecursively(watcher, reachedZnode);
>
>     ZKUtil.deleteChildrenRecursively(watcher, abortZnode);
> It would be nice if recursive deletion is supported so that we don't need
> to traverse all the children first.
>
> Thanks
>
> On Wed, Mar 13, 2013 at 8:22 PM, Marshall McMullen <
> [EMAIL PROTECTED]> wrote:
>
> > No plans to add that at this point that I know of. Certainly haven't seen
> > any jira for this.
> >
> >
> > On Wed, Mar 13, 2013 at 4:54 PM, Ted Yu <[EMAIL PROTECTED]> wrote:
> >
> > > Hi,
> > > Currently multi() only supports single delete Op:
> > >
> > >     public void testNestedCreate() throws Exception {
> > >
> > >         multi(zk, Arrays.asList(
> > >
> > >                 /* Create */
> > >
> > >                 Op.create("/multi", new byte[0], Ids.OPEN_ACL_UNSAFE,
> > > CreateMode.PERSISTENT),
> > >
> > >                 Op.create("/multi/a", new byte[0], Ids.OPEN_ACL_UNSAFE,
> > > CreateMode.PERSISTENT),
> > >
> > >                 Op.create("/multi/a/1", new byte[0],
> Ids.OPEN_ACL_UNSAFE,
> > > CreateMode.PERSISTENT),
> > >
> > >                 /* Delete */
> > >
> > >                 Op.delete("/multi/a/1", 0),
> > >
> > >                 Op.delete("/multi/a", 0),
> > >
> > >                 Op.delete("/multi", 0)
> > >
> > >                 ));
> > >
> > > To obtain all the paths to be deleted, I need to traverse all the
> > children
> > > of the specified node. Is there plan to support recursive deletion in
> > multi
> > > so that I don't need to perform the traversal first ?
> > >
> > >
> > > Thanks
> > >
> >
>
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Ted Yu 2013-03-14, 04:10