I’ve noticed that I’m having intermittent issues accessing the zookeeper quorum
during “destroy” attempts:
2015-02-25 09:48:02,345 [main] WARN client.SliderClient
(SliderClient.java:getZkClient(523)) - Unable to connect to zookeeper quorum
c6402.ambari.apache.org:2181,c6404.ambari.apache.org:2181,c6403.ambari.apache.org:2181,c6405.ambari.apache.org:2181
java.net.ConnectException: Unable to connect to ZK quorum
at
org.apache.slider.core.zk.BlockingZKWatcher.waitForZKConnection(BlockingZKWatcher.java:63)
at
org.apache.slider.client.SliderClient.getZkClient(SliderClient.java:518)
at
org.apache.slider.client.SliderClient.deleteZookeeperNode(SliderClient.java:458)
at
org.apache.slider.client.SliderClient.actionDestroy(SliderClient.java:550)
at org.apache.slider.client.SliderClient.exec(SliderClient.java:383)
at
org.apache.slider.client.SliderClient.runService(SliderClient.java:348)
at
org.apache.slider.core.main.ServiceLauncher.launchService(ServiceLauncher.java:188)
at
org.apache.slider.core.main.ServiceLauncher.launchServiceRobustly(ServiceLauncher.java:475)
at
org.apache.slider.core.main.ServiceLauncher.launchServiceAndExit(ServiceLauncher.java:403)
at
org.apache.slider.core.main.ServiceLauncher.serviceMain(ServiceLauncher.java:630)
at org.apache.slider.Slider.main(Slider.java:49)
2015-02-25 09:48:02,656 [main] DEBUG client.SliderClient
(SliderClient.java:deleteZookeeperNode(474)) - Unable to recursively delete zk
node /services/slider/users/jmaron/hbase-test
2015-02-25 09:48:02,656 [main] DEBUG client.SliderClient
(SliderClient.java:deleteZookeeperNode(475)) - Reason:
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss for /services/slider/users/jmaron/hbase-test
at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1073)
at org.apache.slider.core.zk.ZKIntegration.stat(ZKIntegration.java:164)
at
org.apache.slider.core.zk.ZKIntegration.exists(ZKIntegration.java:160)
at
org.apache.slider.client.SliderClient.deleteZookeeperNode(SliderClient.java:460)
at
org.apache.slider.client.SliderClient.actionDestroy(SliderClient.java:550)
at org.apache.slider.client.SliderClient.exec(SliderClient.java:383)
at
org.apache.slider.client.SliderClient.runService(SliderClient.java:348)
at
org.apache.slider.core.main.ServiceLauncher.launchService(ServiceLauncher.java:188)
at
org.apache.slider.core.main.ServiceLauncher.launchServiceRobustly(ServiceLauncher.java:475)
at
org.apache.slider.core.main.ServiceLauncher.launchServiceAndExit(ServiceLauncher.java:403)
at
org.apache.slider.core.main.ServiceLauncher.serviceMain(ServiceLauncher.java:630)
at org.apache.slider.Slider.main(Slider.java:49)
Any ideas on why that may occur? My cluster is running on a set of VMs on my
development box. These failed ZK interactions will subsequently yield issues
in trying to recreate the given application (in this case HBase)
— Jon
