[ZOOKEEPER-2539] Throwing nullpointerException when run the command "config -c" when client port is mentioned as separate and not like new style

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.5.1, 3.5.2
• Fix Version/s: 3.5.3, 3.6.0
• Component/s: java client
• Hadoop Flags: Reviewed
• Assignee: Rakesh Kumar Singh
• Reporter: Rakesh Kumar Singh
• Created: 29/Aug/16 14:09
• Updated: 18/May/17 03:43
• Resolved: 08/Sep/16 14:22

Description

Throwing nullpointerException when run the command "config -c" when client port is mentioned as separate and not like new style
1. Configure the zookeeper to start in cluster mode like below-

clientPort=2181

server.1=10.18.101.80:2888:3888
server.2=10.18.219.50:2888:3888
server.3=10.18.221.194:2888:3888

and not like below:-
server.1=10.18.101.80:2888:3888:participant;2181
server.2=10.18.219.50:2888:3888:participant;2181
server.3=10.18.221.194:2888:3888:participant;2181

2. Start the cluster and one client using >zkCli.sh
3. execute command "config -c"
It is throwing nullpointerException:-

root@BLR1000010865:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin# ./zkCli.sh
Connecting to localhost:2181
2016-08-29 21:45:19,558 [myid:] - INFO [main:Environment@109] - Client environment:zookeeper.version=3.5.1-alpha--1, built on 08/18/2016 08:20 GMT
2016-08-29 21:45:19,561 [myid:] - INFO [main:Environment@109] - Client environment:host.name=BLR1000010865
2016-08-29 21:45:19,562 [myid:] - INFO [main:Environment@109] - Client environment:java.version=1.7.0_17
2016-08-29 21:45:19,564 [myid:] - INFO [main:Environment@109] - Client environment:java.vendor=Oracle Corporation
2016-08-29 21:45:19,564 [myid:] - INFO [main:Environment@109] - Client environment:java.home=/usr/lib/jvm/oracle_jdk7/jre
2016-08-29 21:45:19,564 [myid:] - INFO [main:Environment@109] - Client environment:java.class.path=/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../build/classes:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../build/lib/*.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/slf4j-log4j12-1.7.5.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/slf4j-api-1.7.5.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/servlet-api-2.5-20081211.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/netty-3.7.0.Final.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/log4j-1.2.16.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/jline-2.11.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/jetty-util-6.1.26.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/jetty-6.1.26.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/javacc.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/jackson-mapper-asl-1.9.11.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/jackson-core-asl-1.9.11.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/commons-cli-1.2.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../lib/ant-eclipse-1.0-jvm1.2.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../zookeeper-3.5.1-alpha.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../src/java/lib/ant-eclipse-1.0-jvm1.2.jar:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin/../conf:
2016-08-29 21:45:19,564 [myid:] - INFO [main:Environment@109] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2016-08-29 21:45:19,564 [myid:] - INFO [main:Environment@109] - Client environment:java.io.tmpdir=/tmp
2016-08-29 21:45:19,564 [myid:] - INFO [main:Environment@109] - Client environment:java.compiler=<NA>
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:os.name=Linux
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:os.arch=amd64
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:os.version=4.4.0-31-generic
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:user.name=root
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:user.home=/root
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:user.dir=/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin
2016-08-29 21:45:19,565 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.free=114MB
2016-08-29 21:45:19,567 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.max=227MB
2016-08-29 21:45:19,568 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.total=119MB
2016-08-29 21:45:19,570 [myid:] - INFO [main:ZooKeeper@716] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@149ee0f1
Welcome to ZooKeeper!
2016-08-29 21:45:19,596 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1138] - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
2016-08-29 21:45:19,603 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@980] - Socket connection established, initiating session, client: /127.0.0.1:43574, server: localhost/127.0.0.1:2181
JLine support is enabled
2016-08-29 21:45:19,630 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1400] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x20044a0c51d0000, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0]
[zk: localhost:2181(CONNECTED) 0] config -c
Exception in thread "main" java.lang.NullPointerException
at org.apache.zookeeper.server.util.ConfigUtils.getClientConfigStr(ConfigUtils.java:56)
at org.apache.zookeeper.cli.GetConfigCommand.exec(GetConfigCommand.java:64)
at org.apache.zookeeper.ZooKeeperMain.processZKCmd(ZooKeeperMain.java:674)
at org.apache.zookeeper.ZooKeeperMain.processCmd(ZooKeeperMain.java:577)
at org.apache.zookeeper.ZooKeeperMain.executeLine(ZooKeeperMain.java:360)
at org.apache.zookeeper.ZooKeeperMain.run(ZooKeeperMain.java:320)
at org.apache.zookeeper.ZooKeeperMain.main(ZooKeeperMain.java:280)
root@BLR1000010865:/home/Rakesh/Zookeeper/18_Aug/cluster/zookeeper-3.5.1-alpha/bin#