Apache's JIRA Issue Tracker | Jerry He | 3 years ago
  1. 0

    Reg: SASL authentication

    zookeeper-user | 4 years ago |
  2. 0

    We've been seeing NullPointerException while working on HBase: {code} 14/01/30 22:15:25 INFO zookeeper.ZooKeeper: Client environment:user.dir=/home/biadmin/hbase-trunk 14/01/30 22:15:25 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=hdtest009:2181 sessionTimeout=90000 watcher=null 14/01/30 22:15:25 INFO zookeeper.ClientCnxn: Opening socket connection to server hdtest009/ Will not attempt to authenticate using SASL (Unable to locate a login configuration) 14/01/30 22:15:25 INFO zookeeper.ClientCnxn: Socket connection established to hdtest009/, initiating session 14/01/30 22:15:25 INFO zookeeper.ClientCnxn: Session establishment complete on server hdtest009/, sessionid = 0x143986213e67e48, negotiated timeout = 60000 14/01/30 22:15:25 ERROR zookeeper.ClientCnxn: Error while calling watcher java.lang.NullPointerException at org.apache.zookeeper.ClientCnxn$EventThread.processEvent( at org.apache.zookeeper.ClientCnxn$ {code} The reason is the watcher is null in this part of the code: {code} private void processEvent(Object event) { try { if (event instanceof WatcherSetEventPair) { // each watcher will process the event WatcherSetEventPair pair = (WatcherSetEventPair) event; for (Watcher watcher : pair.watchers) { try { watcher.process(pair.event); } catch (Throwable t) { LOG.error("Error while calling watcher ", t); } } {code}

    Apache's JIRA Issue Tracker | 3 years ago | Jerry He
  3. 0

    Reconnect to same Zookeeper server with session id fails

    Stack Overflow | 2 days ago | Karthik
    java.lang.NullPointerException: null
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  5. 0

    Android: Saving Map State in Google map

    Stack Overflow | 10 months ago | Junie Negentien
    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.zookeeper.ClientCnxn$EventThread.processEvent()
    2. Zookeeper
      1. org.apache.zookeeper.ClientCnxn$EventThread.processEvent(
      2. org.apache.zookeeper.ClientCnxn$
      2 frames