did you meet the "too many open files" problem while you pulled out the cabble and the ulimit is 100000?
在2015年12月23 07时55分, "Christopher"<[email protected]>写道: I have mine set to 100000, but I would expect 60000 to be more than plenty. Maybe there is something going on. Perhaps the ZK client is too aggressively trying to re-establish a connection, instead of backing off? On Mon, Dec 21, 2015 at 9:00 PM wsk-528 <[email protected]> wrote: > yes, if the number of sockets not continues to grow unbounded,it's not a > problem. > the env of the client has set to 60000(ulimit -HSn 60000),is this value > enough? > > > > > > > 在2015年12月22 06时34分, "Christopher"<[email protected]>写道: > > I could see a concern if the number of sockets continues to grow unbounded, > but if it levels off at some point, and the surge is only temporary, it > might be better to just make sure you bump up your system's security limits > for the number of open files ("nofile" in /etc/security/limits.{d/|conf}. > > This is something the Accumulo project has been recommending, and I've > heard similar recommendations from Hadoop users, and other cloud and/or > bigdata systems. The defaults in many systems are just too small to handle > routine use cases. > > On Sun, Dec 20, 2015 at 3:58 PM wsk-528 <[email protected]> wrote: > > > hello: > > accidentally,i find a problem than the zookeeper client print "too > > many open files" with server version 3.4.6, and i use the same java > client > > version. > > the env is like this:the server running on server A, and the client > > running on server B(RHEL AS5), when i pull out the cable between them, > the > > client print "too many open files" ,and network unreachable. > > i test if i shutdown the network interface,the same log was printed. > > i use lsof -p <pid>,i can see a lot of socket file handle. > > > > > > > > > > my code is as following: > > public class ZKTest { > > > > > > /** > > * @param args > > * @throws IOException > > * @throws InterruptedException > > * @throws KeeperException > > */ > > public static void main(String[] args) throws IOException, > > InterruptedException, KeeperException { > > ZooKeeper zk = new ZooKeeper(args[0], 30000, new Watcher() { > > > > > > @Override > > public void process(WatchedEvent event) { > > if(event.getState()==KeeperState.SyncConnected) { > > System.out.println("connected..."); > > } else if(event.getState()==KeeperState.Disconnected) { > > System.out.println("disconnected..."); > > } else if(event.getState()==KeeperState.Expired) { > > System.out.println("expired..."); > > } else { > > System.out.println("unknow " + event.getState()); > > } > > } > > }); > > zk.exists("/testpath", false); > > Object o = new Object(); > > synchronized(o) { > > o.wait(); > > } > > } > > > > > > } > > > > > > > > >
