Yes, you can, I'll look at it. On Tue, Aug 2, 2016 at 11:40 AM, Flavio Junqueira <[email protected]> wrote:
> Thanks for putting it together, Ben. Do you mind if I create a jira, > upload this file there, and assign it to you? > > -Flavio > > > On 02 Aug 2016, at 19:32, Benjamin Jaton <[email protected]> > wrote: > > > > What about a simple client like this? (see attached) > > > > On Sat, Jul 30, 2016 at 2:29 AM, Flavio Junqueira <[email protected] > <mailto:[email protected]>> wrote: > > We don't seem to have proper documentation for a case like this with > read-only, perhaps you'd be willing to write something down so that we can > include in our documentation, Benjamin? > > > > We should in any case update the documentation with session states that > aren't reflected there, for example, SaslConnected is also not reflected. > > > > -Flavio > > > > > On 29 Jul 2016, at 22:52, Benjamin Jaton <[email protected] > <mailto:[email protected]>> wrote: > > > > > > I was not using for the watcher to give me a ConnectedReadOnly event to > > > start using the ZooKeeper client, my bad. > > > When I use it it never fails. > > > > > > Thanks you for your time, sorry for my mixup. > > > Ben > > > > > > On Fri, Jul 29, 2016 at 2:29 PM, Camille Fournier <[email protected] > <mailto:[email protected]>> > > > wrote: > > > > > >> Just to clarify one thing though in the server logs from the fresh > install > > >> is the new read only server reporting anything? > > >> > > >> On Jul 29, 2016 5:26 PM, "Camille Fournier" <[email protected] > <mailto:[email protected]>> wrote: > > >> > > >>> Sorry again I'm having reading issues ignore that comment as I see > flavio > > >>> already answered it > > >>> > > >>> On Jul 29, 2016 5:25 PM, "Camille Fournier" <[email protected] > <mailto:[email protected]>> wrote: > > >>> > > >>>> Update, I was confused by races of my own doing. Was this client > > >>>> previously connected when it failed the read only check? The server > log > > >> is > > >>>> rejecting it because the client is ahead in zxid in the first set of > > >> logs. > > >>>> The other two servers are totally down and it's a new client when > you > > >> see > > >>>> this issue? > > >>>> > > >>>> On Jul 29, 2016 3:07 PM, "Camille Fournier" <[email protected] > <mailto:[email protected]>> wrote: > > >>>> > > >>>>> Ok yeah I think this is reproducible and a bug in the client > connection > > >>>>> read-only logic. > > >>>>> > > >>>>> On Fri, Jul 29, 2016 at 2:43 PM, Camille Fournier < > [email protected] <mailto:[email protected]>> > > >>>>> wrote: > > >>>>> > > >>>>>> I'm looking at the readonly mode code right now and it appears > that > > >> the > > >>>>>> only way to set readonly mode is a global system property which > means > > >> that > > >>>>>> the tests for this are only testing across 3 servers, all of which > > >> have > > >>>>>> readonly mode set. So, this MAY be a bug, but what a pain to > figure > > >> out how > > >>>>>> to reproduce. > > >>>>>> > > >>>>>> Global system properties: not even once. > > >>>>>> > > >>>>>> On Fri, Jul 29, 2016 at 12:27 PM, Flavio Junqueira < > [email protected] <mailto:[email protected]>> > > >>>>>> wrote: > > >>>>>> > > >>>>>>> Not that I'm aware of... > > >>>>>>> > > >>>>>>> -Flavio > > >>>>>>> > > >>>>>>>> On 29 Jul 2016, at 17:24, Benjamin Jaton < > [email protected] <mailto:[email protected]> > > >>> > > >>>>>>> wrote: > > >>>>>>>> > > >>>>>>>> Hi Flavio, > > >>>>>>>> > > >>>>>>>> The bug / patch is only for the C client, does this issue affect > > >> the > > >>>>>>> java > > >>>>>>>> client as well? > > >>>>>>>> > > >>>>>>>> On Thu, Jul 28, 2016 at 5:01 PM, Benjamin Jaton < > > >>>>>>> [email protected] <mailto:[email protected]>> > > >>>>>>>> wrote: > > >>>>>>>> > > >>>>>>>>> I will definitely try and I'll post an update, thanks again > > >> Flavio. > > >>>>>>>>> > > >>>>>>>>> On Thu, Jul 28, 2016 at 4:59 PM, Flavio Junqueira < > [email protected] <mailto:[email protected]> > > >>> > > >>>>>>> wrote: > > >>>>>>>>> > > >>>>>>>>>> I think you're hitting this: > > >>>>>>>>>> > > >>>>>>>>>> https://issues.apache.org/jira/browse/ZOOKEEPER-2466 < > https://issues.apache.org/jira/browse/ZOOKEEPER-2466> < > > >>>>>>>>>> https://issues.apache.org/jira/browse/ZOOKEEPER-2466 < > https://issues.apache.org/jira/browse/ZOOKEEPER-2466>> > > >>>>>>>>>> > > >>>>>>>>>> which is resolved for 3.5.3 and trunk. You can try out the > patch. > > >>>>>>>>>> > > >>>>>>>>>> -Flavio > > >>>>>>>>>> > > >>>>>>>>>>> On 29 Jul 2016, at 00:56, Benjamin Jaton < > > >>>>>>> [email protected] <mailto:[email protected]>> > > >>>>>>>>>> wrote: > > >>>>>>>>>>> > > >>>>>>>>>>> OK so I did another fresh install this time using > 3.5.2-alpha, > > >>>>>>> and the > > >>>>>>>>>> read > > >>>>>>>>>>> only client doesn't seem to try all the hosts available. > > >>>>>>>>>>> > > >>>>>>>>>>> I create my client with: > > >>>>>>>>>>> ZooKeeper zk = new ZooKeeper("10.11.9.70:2181 < > http://10.11.9.70:2181/>,10.11.12.4:2181 <http://10.11.12.4:2181/>, > > >>>>>>>>>>> 10.11.12.210:2181 <http://10.11.12.210:2181/>", 45000, > this, true); > > >>>>>>>>>>> > > >>>>>>>>>>> In the following output, it only checks for 10.11.12.4:2181 > <http://10.11.12.4:2181/> and > > >>>>>>>>>>> 10.11.12.210:2181 <http://10.11.12.210:2181/>, but it > doesn't try 10.11.9.70:2181 <http://10.11.9.70:2181/> which is > > >>>>>>> where > > >>>>>>>>>> the > > >>>>>>>>>>> running server is. > > >>>>>>>>>>> > > >>>>>>>>>>> 0 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:zookeeper.version=3.5.2-alpha-1753710, built on > > >>>>>>> 07/21/2016 > > >>>>>>>>>>> 16:24 GMT > > >>>>>>>>>>> 1 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>> environment: > > >>>>>>>>>> host.name <http://host.name/> > > >>>>>>>>>>> =w-rli09-ben > > >>>>>>>>>>> 1 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:java.version=1.8.0_11 > > >>>>>>>>>>> 1 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:java.vendor=Oracle Corporation > > >>>>>>>>>>> 1 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:java.home=/usr/local/apps/jdk1.8.0_11/jre > > >>>>>>>>>>> 1 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > environment:java.class.path=/home/benji/workspace-trunk/testzkclient/bin:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/commons-cli-1.2.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/jackson-core-asl-1.9.11.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/jackson-mapper-asl-1.9.11.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/javacc.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/jetty-6.1.26.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/jetty-util-6.1.26.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/jline-2.11.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/log4j-1.2.17.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/netty-3.10.5.Final.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/servlet-api-2.5-20081211.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/slf4j-api-1.7.5.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/lib/slf4j-log4j12-1.7.5.jar:/home/benji/workspace-trunk/zookeeper-3.5.2/build/zookeeper-3.5.2-alpha.jar > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:java.io.tmpdir=/tmp > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:java.compiler=<NA> > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>> environment: > > >>>>>>>>>> os.name <http://os.name/> > > >>>>>>>>>>> =Linux > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:os.arch=amd64 > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:os.version=3.8.0-44-generic > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>> environment: > > >>>>>>>>>> user.name <http://user.name/> > > >>>>>>>>>>> =benji > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:user.home=/home/benji > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:user.dir=/home/benji/workspace-trunk/testzkclient > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:os.memory.free=376MB > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:os.memory.max=5358MB > > >>>>>>>>>>> 2 [main] INFO org.apache.zookeeper.ZooKeeper - Client > > >>>>>>>>>>> environment:os.memory.total=378MB > > >>>>>>>>>>> *8 [main] INFO org.apache.zookeeper.ZooKeeper - Initiating > > >> client > > >>>>>>>>>>> connection, connectString=10.11.9.70:2181 < > http://10.11.9.70:2181/> > > >>>>>>>>>>> <http://10.11.9.70:2181 <http://10.11.9.70:2181/>>, > 10.11.12.4:2181 <http://10.11.12.4:2181/> > > >>>>>>>>>>> <http://10.11.12.4:2181 <http://10.11.12.4:2181/>>, > 10.11.12.210:2181 <http://10.11.12.210:2181/> < > > >>>>>>> http://10.11.12.210:2181 <http://10.11.12.210:2181/>> > > >>>>>>>>>>> sessionTimeout=45000 > > >>>>>>> watcher=testzkclient.TestZkReadOnlyClient@5010be6* > > >>>>>>>>>>> 21 [main] DEBUG org.apache.zookeeper.ClientCnxnSocket - > > >>>>>>> jute.maxbuffer > > >>>>>>>>>> is > > >>>>>>>>>>> 4194304 > > >>>>>>>>>>> Successfully established the connection with ZooKeeper > > >>>>>>>>>>> *37 [main-SendThread(10.11.12.4:2181 < > http://10.11.12.4:2181/> <http://10.11.12.4:2181 <http://10.11.12.4:2181/ > >>)] > > >>>>>>> INFO > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxn - Opening socket connection > to > > >>>>>>> server > > >>>>>>>>>>> 10.11.12.4/10.11.12.4:2181 < > http://10.11.12.4/10.11.12.4:2181> <http://10.11.12.4/10.11.12.4:2181 < > http://10.11.12.4/10.11.12.4:2181>>. > > >>>>>>> Will > > >>>>>>>>>> not > > >>>>>>>>>>> attempt to authenticate using SASL (unknown error)* > > >>>>>>>>>>> 43 [main-SendThread(10.11.12.4:2181 <http://10.11.12.4:2181/>)] > WARN > > >>>>>>>>>> org.apache.zookeeper.ClientCnxn > > >>>>>>>>>>> - Session 0x0 for server null, unexpected error, closing > socket > > >>>>>>>>>> connection > > >>>>>>>>>>> and attempting reconnect > > >>>>>>>>>>> java.net.ConnectException: Connection refused > > >>>>>>>>>>> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:357) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1214) > > >>>>>>>>>>> 45 [main-SendThread(10.11.12.4:2181 <http://10.11.12.4:2181/>)] > DEBUG > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxnSocketNIO - Ignoring > exception > > >>>>>>> during > > >>>>>>>>>>> shutdown input > > >>>>>>>>>>> java.nio.channels.ClosedChannelException > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:775) > > >>>>>>>>>>> at > > >>>>>>> sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:402) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxnSocketNIO.cleanup(ClientCnxnSocketNIO.java:198) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1325) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1245) > > >>>>>>>>>>> 45 [main-SendThread(10.11.12.4:2181 <http://10.11.12.4:2181/>)] > DEBUG > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxnSocketNIO - Ignoring > exception > > >>>>>>> during > > >>>>>>>>>>> shutdown output > > >>>>>>>>>>> java.nio.channels.ClosedChannelException > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> > sun.nio.ch.SocketChannelImpl.shutdownOutput(SocketChannelImpl.java:792) > > >>>>>>>>>>> at > > >>>>>>> sun.nio.ch.SocketAdaptor.shutdownOutput(SocketAdaptor.java:410) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxnSocketNIO.cleanup(ClientCnxnSocketNIO.java:205) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1325) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1245) > > >>>>>>>>>>> *149 [main-SendThread(10.11.12.210:2181 < > http://10.11.12.210:2181/> < > > >> http://10.11.12.210:2181 <http://10.11.12.210:2181/> > > >>>>>>>> )] > > >>>>>>>>>> INFO > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxn - Opening socket connection > to > > >>>>>>> server > > >>>>>>>>>>> 10.11.12.210/10.11.12.210:2181 < > http://10.11.12.210/10.11.12.210:2181> < > > >>>>>>> http://10.11.12.210/10.11.12.210:2181 < > http://10.11.12.210/10.11.12.210:2181>>. > > >>>>>>>>>>> Will not attempt to authenticate using SASL (unknown error)* > > >>>>>>>>>>> 150 [main-SendThread(10.11.12.210:2181 < > http://10.11.12.210:2181/>)] WARN > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxn - Session 0x0 for server > null, > > >>>>>>>>>> unexpected > > >>>>>>>>>>> error, closing socket connection and attempting reconnect > > >>>>>>>>>>> java.net.ConnectException: Connection refused > > >>>>>>>>>>> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:357) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1214) > > >>>>>>>>>>> 150 [main-SendThread(10.11.12.210:2181 < > http://10.11.12.210:2181/>)] DEBUG > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxnSocketNIO - Ignoring > exception > > >>>>>>> during > > >>>>>>>>>>> shutdown input > > >>>>>>>>>>> java.nio.channels.ClosedChannelException > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:775) > > >>>>>>>>>>> at > > >>>>>>> sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:402) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxnSocketNIO.cleanup(ClientCnxnSocketNIO.java:198) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1325) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1245) > > >>>>>>>>>>> 150 [main-SendThread(10.11.12.210:2181 < > http://10.11.12.210:2181/>)] DEBUG > > >>>>>>>>>>> org.apache.zookeeper.ClientCnxnSocketNIO - Ignoring > exception > > >>>>>>> during > > >>>>>>>>>>> shutdown output > > >>>>>>>>>>> java.nio.channels.ClosedChannelException > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> > sun.nio.ch.SocketChannelImpl.shutdownOutput(SocketChannelImpl.java:792) > > >>>>>>>>>>> at > > >>>>>>> sun.nio.ch.SocketAdaptor.shutdownOutput(SocketAdaptor.java:410) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxnSocketNIO.cleanup(ClientCnxnSocketNIO.java:205) > > >>>>>>>>>>> at > > >>>>>>>>>>> > > >>>>>>> > > >> > org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1325) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1245) > > >>>>>>>>>>> *Exception in thread "main" > > >>>>>>>>>>> org.apache.zookeeper.KeeperException$ConnectionLossException: > > >>>>>>>>>>> KeeperErrorCode = ConnectionLoss for /* > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.KeeperException.create(KeeperException.java:99) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.KeeperException.create(KeeperException.java:51) > > >>>>>>>>>>> at > org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1956) > > >>>>>>>>>>> at > org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1985) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >> testzkclient.TestZkReadOnlyClient.run(TestZkReadOnlyClient.java:26) > > >>>>>>>>>>> at > > >>>>>>>>>> > > >>>>>>> > testzkclient.TestZkReadOnlyClient.main(TestZkReadOnlyClient.java:13) > > >>>>>>>>>>> > > >>>>>>>>>>> > > >>>>>>>>>>> Does anybody else have issues with the readonly mode? > > >>>>>>>>>>> > > >>>>>>>>>>> Thanks > > >>>>>>>>>>> Benjamin > > >>>>>>>>>>> > > >>>>>>>>>>> > > >>>>>>>>>>> On Sat, Jul 16, 2016 at 7:39 PM, Benjamin Jaton < > > >>>>>>>>>> [email protected] <mailto:[email protected]>> > > >>>>>>>>>>> wrote: > > >>>>>>>>>>> > > >>>>>>>>>>>> Very interesting, thank you Flavio. > > >>>>>>>>>>>> > > >>>>>>>>>>>> That should not happen because I have actually never started > > >>>>>>> (even > > >>>>>>>>>> never > > >>>>>>>>>>>> created) the other servers. This server is the first one the > > >>>>>>> client > > >>>>>>>>>> could > > >>>>>>>>>>>> have possibly ever seen. Maybe the server has to have been > in a > > >>>>>>>>>> functioning > > >>>>>>>>>>>> ensemble at least once before being able to be read only > able? > > >>>>>>>>>>>> I will recheck all my setup and do it again. > > >>>>>>>>>>>> Thanks again, > > >>>>>>>>>>>> Ben > > >>>>>>>>>>>> > > >>>>>>>>>>>> On Wed, Jul 13, 2016 at 2:06 PM, Flavio Junqueira < > > >>>>>>> [email protected] <mailto:[email protected]>> > > >>>>>>>>>> wrote: > > >>>>>>>>>>>> > > >>>>>>>>>>>>> From the logs, it looks like the server the client is > trying > > >> to > > >>>>>>>>>> connect > > >>>>>>>>>>>>> to is behind compared to last zxid the client has seen: > > >>>>>>>>>>>>> > > >>>>>>>>>>>>> Refusing session request for client /10.11.12.4:49237 > <http://10.11.12.4:49237/> > > >> as > > >>>>>>> it > > >>>>>>>>>> has > > >>>>>>>>>>>>> seen zxid 0x3 our last zxid is 0x0 client must try another > > >>>>>>> server > > >>>>>>>>>>>>> > > >>>>>>>>>>>>> I believe the behavior we currently have is that a client > can > > >>>>>>> connect > > >>>>>>>>>> to > > >>>>>>>>>>>>> an RO server, but the server must have a view at least as > > >>>>>>> recent as > > >>>>>>>>>> the > > >>>>>>>>>>>>> server. > > >>>>>>>>>>>>> > > >>>>>>>>>>>>> -Flavio > > >>>>>>>>>>>>> > > >>>>>>>>>>>>>> On 12 Jul 2016, at 16:23, Benjamin Jaton < > > >>>>>>> [email protected] <mailto:[email protected]>> > > >>>>>>>>>>>>> wrote: > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> Hello, > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> I'm having problems using ZK in read-only mode. > > >>>>>>>>>>>>>> I am using a fresh install of ZK 3.5.1-alpha where I > > >> configure > > >>>>>>> the > > >>>>>>>>>>>>> installation to be in a 3 nodes ensemble. > > >>>>>>>>>>>>>> I start this node only (QA-E8WIN11) with > > >>>>>>> -Dreadonlymode.enabled=true. > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> I see that the node QA-E8WIN11 starts the RO server > properly: > > >>>>>>>>>>>>>> 2016-07-12 16:10:10,955 [myid:1] - INFO > > >>>>>>>>>>>>> [Thread-4:ReadOnlyZooKeeperServer@73] - Read-only server > > >>>>>>> started > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> Then I make a read-only enabled client: > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> ZooKeeper zk = new > > >>>>>>>>>>>>> > ZooKeeper("QA-E8WIN12:2181,QA-E8WIN13:2181,QA-E8WIN11:2181", > > >>>>>>> 45000, > > >>>>>>>>>> this, > > >>>>>>>>>>>>> true); > > >>>>>>>>>>>>>> System.out.println("Successfully established the > > >>>>>>> connection > > >>>>>>>>>>>>> with ZooKeeper"); > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> zk.getData("/", false, null); > > >>>>>>>>>>>>>> System.out.println("Done."); > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> Note that only QA-E8WIN11 is started, the other 2 are not. > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> When the ZK client picks QA-E8WIN11 first, it works. > > >>>>>>>>>>>>>> But when it picks a different node, it fails with: > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> 16:10:13.338 org.apache.zookeeper.ZooKeeper:716 - > Initiating > > >>>>>>> client > > >>>>>>>>>>>>> connection, > > >>>>>>>>>> connectString=QA-E8WIN12:2181,QA-E8WIN13:2181,QA-E8WIN11:2181 > > >>>>>>>>>>>>> sessionTimeout=45000 watcher=TestZkReadOnly@68de145 > > >>>>>>>>>>>>>> Successfully established the connection with ZooKeeper > > >>>>>>>>>>>>>> 16:10:13.475 org.apache.zookeeper.ClientCnxn:1138 - > Opening > > >>>>>>> socket > > >>>>>>>>>>>>> connection to server QA-E8WIN13/10.11.8.230:2181 < > http://10.11.8.230:2181/> < > > >>>>>>>>>>>>> http://10.11.8.230:2181/ <http://10.11.8.230:2181/>>. > Will not attempt to authenticate > > >>>>>>> using > > >>>>>>>>>> SASL > > >>>>>>>>>>>>> (unknown error) > > >>>>>>>>>>>>>> 16:10:28.469 org.apache.zookeeper.ClientCnxn:1251 - Client > > >>>>>>> session > > >>>>>>>>>>>>> timed out, have not heard from server in 15001ms for > sessionid > > >>>>>>> 0x0, > > >>>>>>>>>> closing > > >>>>>>>>>>>>> socket connection and attempting reconnect > > >>>>>>>>>>>>>> 16:10:28.574 org.apache.zookeeper.ClientCnxn:1138 - > Opening > > >>>>>>> socket > > >>>>>>>>>>>>> connection to server QA-E8WIN12/10.11.8.232:2181 < > http://10.11.8.232:2181/> < > > >>>>>>>>>>>>> http://10.11.8.232:2181/ <http://10.11.8.232:2181/>>. > Will not attempt to authenticate > > >>>>>>> using > > >>>>>>>>>> SASL > > >>>>>>>>>>>>> (unknown error) > > >>>>>>>>>>>>>> Exception in thread "main" > > >>>>>>>>>>>>> > org.apache.zookeeper.KeeperException$ConnectionLossException: > > >>>>>>>>>>>>> KeeperErrorCode = ConnectionLoss for / > > >>>>>>>>>>>>>> at > > >>>>>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.KeeperException.create(KeeperException.java:99) > > >>>>>>>>>>>>>> at > > >>>>>>>>>>>>> > > >>>>>>> > org.apache.zookeeper.KeeperException.create(KeeperException.java:51) > > >>>>>>>>>>>>>> at > > >>>>>>> org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1753) > > >>>>>>>>>>>>>> at > > >>>>>>> org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1782) > > >>>>>>>>>>>>>> at TestZkReadOnly.run(TestZkReadOnly.java:26) > > >>>>>>>>>>>>>> at TestZkReadOnly.main(TestZkReadOnly.java:16) > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> I'm attaching all the logs. The server and the client are > on > > >>>>>>> the same > > >>>>>>>>>>>>> machine QA-E8WIN11. > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> Any help would be greatly appreciated! > > >>>>>>>>>>>>>> > > >>>>>>>>>>>>>> Thanks, > > >>>>>>>>>>>>>> Benjamin Jaton > > >>>>>>>>>>>>>> <zkclient.log><zkserver.log> > > >>>>>>>>>>>>> > > >>>>>>>>>>>>> > > >>>>>>>>>>>> > > >>>>>>>>>> > > >>>>>>>>>> > > >>>>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>> > > >>>>> > > >> > > > > > > <MySimpleZkClient.java> > >
