> zookeeper conf is not on the class path for the mapreduce job. Add conf
> file to class path for the job.
>
> Thanks,
> Mayank
>
>
> On Wed, Jun 6, 2012 at 7:25 AM, Manu S <manupk...@gmail.com> wrote:
>
>> Hi All,
>>
>> We are running a mapreduce job in a fully distributed cluster.The output
>> of the job is writing to HBase.
>>
>> While running this job we are getting an error:
>>
>> *Caused by: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is
>> able to connect to ZooKeeper but the connection closes immediately. This
>> could be a sign that the server has too many connections (30 is the
>> default). Consider inspecting your ZK server logs for that error and then
>> make sure you are reusing HBaseConfiguration as often as you can. See
>> HTable's javadoc for more information.*
>> at
>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:155)
>> at
>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:1002)
>> at
>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:304)
>> at
>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:295)
>> at
>> org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:157)
>> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:169)
>> at
>> org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:36)
>>
>>
>> I had gone through some threads related to this issue and I modified the
>> *zoo.cfg* accordingly. These configurations are same in all the nodes.
>> Please find the configuration of HBase & ZooKeeper:
>>
>> Hbase-site.xml:
>>
>> <configuration>
>>
>> <property>
>> <name>hbase.cluster.distributed</name>
>> <value>true</value>
>> </property>
>>
>> <property>
>> <name>hbase.rootdir</name>
>> <value>hdfs://namenode/hbase</value>
>> </property>
>>
>> <property>
>> <name>hbase.zookeeper.quorum</name>
>> <value>namenode</value>
>> </property>
>>
>> </configuration>
>>
>>
>> Zoo.cfg:
>>
>> # The number of milliseconds of each tick
>> tickTime=2000
>> # The number of ticks that the initial
>> # synchronization phase can take
>> initLimit=10
>> # The number of ticks that can pass between
>> # sending a request and getting an acknowledgement
>> syncLimit=5
>> # the directory where the snapshot is stored.
>> dataDir=/var/zookeeper
>> # the port at which the clients will connect
>> clientPort=2181
>> #server.0=localhost:2888:3888
>> server.0=namenode:2888:3888
>>
>> ################# Max Client connections ###################
>> *maxClientCnxns=1000
>> minSessionTimeout=4000
>> maxSessionTimeout=40000*
>>
>>
>> It would be really great if anyone can help me to resolve this issue by
>> giving your thoughts/suggestions.
>>
>> Thanks,
>> Manu S
>>
>
>
