question Re: Wrong Zookeeper Client Information listed in Eclipse Java Program in Support Questions

Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Wed, 01 Jun 2016 23:06:49 GMT

The below environment variables are wrong and seem to be from my local machine. I would expect Zookeeper to list the variables from my Sandbox on VirtualBox

2016-05-31 16:04:05,796 INFO [main] zookeeper.ZooKeeper: Client environment:zookeeper.version=3.4.6-1569965, built on 02/20/2014 09:09 GMT

2016-05-31 16:04:05,796 INFO [main] zookeeper.ZooKeeper: Client environment:host.name=daniel

2016-05-31 16:04:05,796 INFO [main] zookeeper.ZooKeeper: Client environment:java.version=1.7.0_72

2016-05-31 16:04:05,796 INFO [main] zookeeper.ZooKeeper: Client environment:java.vendor=Oracle Corporation

2016-05-31 16:04:05,796 INFO [main] zookeeper.ZooKeeper: Client environment:java.home=C:\Java\jdk1.7.0_72\jre

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

rajkumar_singh — Wed, 01 Jun 2016 23:19:38 GMT

all these value are getting picked up from your env variable http://grepcode.com/file/repo1.maven.org/maven2/org.apache.zookeeper/zookeeper/3.3.1/org/apache/zookeeper/Environment.java#Environment

please check your env variable

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Wed, 01 Jun 2016 23:24:17 GMT

How would I ensure it picks up the values from my VM.

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

rajkumar_singh — Wed, 01 Jun 2016 23:29:35 GMT

is there any zk client is running on your local machine which is trying to connect to zk-server running on vm?

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Wed, 01 Jun 2016 23:37:05 GMT

No. There is not zk client running on my local machine. I think my java program fails to connect to zookeper. I get the below error as well

2016-05-31 16:04:05,827 INFO [main-SendThread(0:0:0:0:0:0:0:1:2181)] zookeeper.ClientCnxn: Opening socket connection to server 0:0:0:0:0:0:0:1/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) 2016-05-31 16:04:06,830 WARN [main-SendThread(0:0:0:0:0:0:0:1:2181)] zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect java.net.ConnectException: Connection refused: no further information at

sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at

sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739) at

org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361) at

org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)

2016-05-31 16:04:06,935 INFO [main-SendThread(127.0.0.1:2181)] zookeeper.ClientCnxn: Opening socket connection to server 127.0.0.1/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)

2016-05-31 16:04:06,945 WARN [main] zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper, quorum=localhost:2181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid

2016-05-31 16:04:07,937 WARN [main-SendThread(127.0.0.1:2181)] zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect java.net.ConnectException: Connection refused: no further information

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

tyu — Wed, 01 Jun 2016 23:38:22 GMT

@Daniel Buraimo

Are you trying to connect to hbase cluster ?

In your pom.xml, you should have dependency similar to the following:

[INFO] | +- org.apache.zookeeper:zookeeper:jar:3.4.6:compile

In your hbase-site.xml, the following two config parameters should have the correct values:

<property> <name>hbase.zookeeper.quorum</name>

</property>

<property> <name>zookeeper.znode.parent</name> <value>/hbase-unsecure</value> </property>

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Thu, 02 Jun 2016 00:12:13 GMT

Yes I'm trying to connect to an hbase cluster to perform CRUD oeprations on tables. My java program currently looks like this

Configuration conf = HBaseConfiguration.create();

try { HBaseAdmin.checkHBaseAvailable(conf);

}

catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

HBase Version	1.1.2.2.4.0.0-169, revision=61dfb2b344f424a11f93b3f086eab815c1eb0b6a
ZooKeeper Client Version	3.4.6-169, revision=-1
Zookeeper Quorum	sandbox.hortonworks.com:2181
Zookeeper Base Path	/hbase-unsecure
Hadoop Version	2.7.1.2.4.0.0-169, revision=26104d8ac833884c8776473823007f176854f2eb

All information gotten from Ambari Dashboard. The hbase-site xml were also downloaded from the Ambari dashboard. I'm currently using hbase-1.1.5 bin version jars in my local java project. I also had to set a local hadoop home directory in vm arguments because I got the below error

2016-06-01 10:12:17,088 ERROR [main] util.Shell: Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

tyu — Thu, 02 Jun 2016 00:37:38 GMT

The hbase-site xml didn't seem to be on your classpath - that was why 0:0:0:0:0:0:0:1:2181 appeared in the log.

Once you put hbase-site.xml on classpath, you should be able to connect.

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Thu, 02 Jun 2016 01:03:54 GMT

I've put the hbase-site.xml in the classpath. I get an updated log which I've atatchederrorlog.txt

Thank you for your help

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Thu, 02 Jun 2016 01:24:16 GMT

I also added the following to my local windows host file

127.0.0.1 localhost

10.0.2.15 sandbox sandbox.hortonworks.com

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

tyu — Thu, 02 Jun 2016 01:55:40 GMT

2016-06-01 10:51:14,799 ERROR [main] util.Shell: Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.

You need to set your HADOOP_HOME in the environment.

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Thu, 02 Jun 2016 03:58:14 GMT

I set the hadoop home directory. I'm still getting the same zookeper connection errors

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

tyu — Thu, 02 Jun 2016 04:16:55 GMT

Can you check the zookeeper server log on 10.0.2.15 ?

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Thu, 02 Jun 2016 04:26:04 GMT

Is that accessible through ambari or do I have to get it from my SSH Horton client

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

tyu — Thu, 02 Jun 2016 05:13:04 GMT

I navigated Ambari UI w.r.t. the zookeeper server(s)

There is no direct UI for log collection.

Please log onto the VM.

Log should be under /var/log/zookeeper/

Thanks

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

tyu — Thu, 02 Jun 2016 23:36:47 GMT

@Daniel Buraimo

Have you got a chance to check zookeeper log ?

Let us know what help we can provide.

Re: Wrong Zookeeper Client Information listed in Eclipse Java Program

DanBur — Fri, 03 Jun 2016 03:14:09 GMT

Thank you. I haven't had a chance to look at the logs. Other tasks came up. I'll update the question once I've done that