On Thu, Apr 29, 2010 at 8:49 AM, Patrick Hunt <ph...@apache.org> wrote:
> This is not foolproof however. We found that in general this would work, > however there were some infrequent cases where a restarted server would fail > to initialize due to the following issue: > "it is possible for the process to complete before the kernel has released > the associated network resource, and this port cannot be bound to another > process until the kernel has decided that it is done." > > more detail here: > http://hea-www.harvard.edu/~fine/Tech/addrinuse.html > > as a result we ended up changing the test code to start each test with new > quorum/election port numbers. This fixed the problem for us but would not be > a solution in your case. > > Patrick I am not an expert at all on this, but I have used SO_REUSEADDR in other situations to avoid the address in use problem. Would that help here? Chad Harrington chad.harring...@gmail.com > > > On 04/29/2010 07:13 AM, Vishal K wrote: > >> Hi Ted, >> >> We want the application that embeds the ZK server to be running even after >> the ZK server is shutdown. So we don't want to restart the application. >> Also, we prefer not to use zkServer.sh/zkServer.cmd because these are OS >> dependent (our application will run on Win as well as Linux). Instead, we >> thought that calling QuorumPeerMain.initializeAndRun() and >> QuorumPeerMain.shutdown() will suffice to start and shutdown a ZK server >> and >> we won't have to worry about checking the OS. >> >> Is there way to cleanly shutdown the ZK server (by invoking ZK server API) >> when it is embedded in the application without actually restarting the >> application process? >> Thanks. >> On Thu, Apr 29, 2010 at 1:54 AM, Ted Dunning<ted.dunn...@gmail.com> >> wrote: >> >> Hmmm.... it isn't quite clear what you mean by restart without >>> restarting. >>> >>> Why is killing the server and restarting it not an option? >>> >>> It is common to do a rolling restart on a ZK cluster. Just restart one >>> server at a time. This is often used during system upgrades. >>> >>> On Wed, Apr 28, 2010 at 8:22 PM, Vishal K<vishalm...@gmail.com> wrote: >>> >>> >>>> What is a good way to restart a ZK server (standalone and quorum) >>>> without >>>> having to restart it? >>>> >>>> Currently, I have ZK server embedded in another java application. >>>> >>> >>> >>
