I took a spin of it for the multi functionality on a custom test I built, which resembles the usecase HBase-2611 provides: Atomically "move" some znodes for /A to /B. The crux of the test is:
a) Create N callables which list the znodes under /A and create move operations (Create Op and a Delete Op) for those znodes to move them into their corresponding directories (such as /B1, /B2, ... /Bn, etc). In some of these commands, insert a spurious command (wrong ACLs, etc) so that it fails in between. Manage their execution so that they all start at the same time. b) Submit those callables in a threadpool (and open the latch to begin the race). In the end, only one thread should be able to do the move into its directory. I tested it about 10 times and it works good. Using it in HBase-2611 involves some changes to the uploaded patch (and testing on a real cluster), it may take some time (early next week or so). But since the crux of 2611 is basically the above test, I am +1 (a non-binding vote). Thanks, Himanshu On Mon, Sep 17, 2012 at 11:41 AM, Mahadev Konar <maha...@hortonworks.com>wrote: > Thanks to Rakesh R for quick responses. We have an RC out. Gregory, if > you can give this is a try would be really great! > > http://people.apache.org/~mahadev/zookeeper-3.4.4-candidate-0/ > > thanks > mahadev > > On Sun, Sep 16, 2012 at 11:10 PM, Mahadev Konar <maha...@hortonworks.com> > wrote: > > Hi Gregory/others, > > Unfortunately we have one last patch to go: ZOOKEEPER-1496 which I > > think is a critical fix for 3.4 branch. Once thats in 3.4 > > branch/trunk, Ill send out the RC out for the vote. Most likely this > > should happen in the next day or 2. > > > > Thanks for waiting. > > mahadev > > > > > > On Fri, Sep 14, 2012 at 12:22 AM, Mahadev Konar <maha...@hortonworks.com> > wrote: > >> Hi Gregory, > >> There are 4-5 jiras to review. I should be able to get an RC out this > >> weekend. Feedback on the RC would be great. > >> > >> thanks > >> mahadev > >> > >> On Thu, Sep 13, 2012 at 1:21 PM, Gregory Chanan <gcha...@cloudera.com> > wrote: > >>> Hi Mahadev, > >>> > >>> Any status update/current ETA on the 3.4.4 release? > >>> Several HBase folks are eagerly anticipating a 3.4 "stable" release. > I'm > >>> currently working on improving an HBase compatibility issue that would > be > >>> well served by this release. > >>> > >>> Thanks, > >>> Greg >
