John Sichi wrote:
Since the exception below is from JDO, it has to do with the configuration of 
Hive's metastore (not HBase/Zookeeper).

JVS

On Jan 5, 2011, at 2:14 AM, Adarsh Sharma wrote:



Dear all,

I am trying Hive/Hbase Integration from the past 2 days. I am facing the below 
issue while creating external table in Hive.

*Command-Line Error :-

*had...@s2-ratw-1:~/project/hive-0.6.0/build/dist$ bin/hive --auxpath 
/home/hadoop/project/hive-0.6.0/build/dist/lib/hive_hbase-handler.jar,/home/hadoop/project/hive-0.6.0/build/dist/lib/hbase-0.20.3.jar,/home/hadoop/project/hive-0.6.0/build/dist/lib/zookeeper-3.2.2.jar
  -hiveconf 
hbase.zookeeper.quorum=192.168.1.103,192.168.1.114,192.168.1.115,192.168.1.104,192.168.1.107
Hive history file=/tmp/hadoop/hive_job_log_hadoop_201101051527_1728376885.txt
hive> show tables;
FAILED: Error in metadata: javax.jdo.JDOFatalDataStoreException: Communications 
link failure

The last packet sent successfully to the server was 0 milliseconds ago. The 
driver has not received any packets from the server.
NestedThrowables:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link 
failure

The last packet sent successfully to the server was 0 milliseconds ago. The 
driver has not received any packets from the server.
FAILED: Execution Error, return code 1 from 
org.apache.hadoop.hive.ql.exec.DDLTask
hive> exit;
had...@s2-ratw-1:~/project/hive-0.6.0/build/dist$

*My hive.log file says :*

2011-01-05 15:19:36,783 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle 
"org.eclipse.jdt.core" requires "org.eclipse.core.resources" but it cannot be 
resolved.
2011-01-05 15:19:36,783 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle 
"org.eclipse.jdt.core" requires "org.eclipse.core.resources" but it cannot be 
resolved.
2011-01-05 15:19:36,785 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle 
"org.eclipse.jdt.core" requires "org.eclipse.core.runtime" but it cannot be 
resolved.
2011-01-05 15:19:36,785 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle 
"org.eclipse.jdt.core" requires "org.eclipse.core.runtime" but it cannot be 
resolved.
2011-01-05 15:19:36,786 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle 
"org.eclipse.jdt.core" requires "org.eclipse.text" but it cannot be resolved.
2011-01-05 15:19:36,786 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle 
"org.eclipse.jdt.core" requires "org.eclipse.text" but it cannot be resolved.
2011-01-05 15:20:12,185 WARN  zookeeper.ClientCnxn (ClientCnxn.java:run(967)) - 
Exception closing session 0x0 to sun.nio.ch.selectionkeyi...@561279c8
java.net.ConnectException: Connection refused
      at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
      at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
      at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:933)
2011-01-05 15:20:12,188 WARN  zookeeper.ClientCnxn 
(ClientCnxn.java:cleanup(1001)) - Ignoring exception during shutdown input
java.nio.channels.ClosedChannelException
      at sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:638)
      at sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
      at org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:999)
      at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:970)
2011-01-05 15:20:12,188 WARN  zookeeper.ClientCnxn 
(ClientCnxn.java:cleanup(1006)) - Ignoring exception during shutdown output
java.nio.channels.ClosedChannelException
      at sun.nio.ch.SocketChannelImpl.shutdownOutput(SocketChannelImpl.java:649)
      at sun.nio.ch.SocketAdaptor.shutdownOutput(SocketAdaptor.java:368)
      at 
org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1004)
      at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:970)
2011-01-05 15:20:12,621 WARN  zookeeper.ClientCnxn (ClientCnxn.java:run(967)) - 
Exception closing session 0x0 to sun.nio.ch.selectionkeyi...@799dbc3b

I overcomed from the previous issue of MasterNotRunning Exception which occured 
due to incompatibilities in hive_hbase jars.

Now I'm using Hadoop-0.20.2, Hive-0.6.0 ( Bydefault Derby metastore  ) and 
Hbase-0.20.3.

Please tell how this could be resolved.

Also I want to add one more thing that my hadoop Cluster is of 9 nodes and 8 
nodes act as Datanodes,Tasktrackers and Regionservers.

Among these nodes is set zookeeper.quorum.property to have 5 Datanodes. Would 
this is the issue.
I don't know the number of servers needed for Zookeeper in fully distributed 
mode.


Best Regards

Adarsh Sharma



Thank U all, I over comed this issue, but know I got a strange problem while creating external table that is managed by hbase ( Hive/Hbase Integration ).

******************Error while running create table command in Hive to store in Hbase**************

hive> CREATE TABLE hive_hbasetable_k(key int, value string)
   > STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
   > WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf1:val")
   > TBLPROPERTIES ("hbase.table.name" = "hivehbasek");

FAILED: Error in metadata: MetaException(message:org.apache.hadoop.hbase.MasterNotRunningException at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getMaster(HConnectionManager.java:374) at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:72) at org.apache.hadoop.hive.hbase.HBaseStorageHandler.getHBaseAdmin(HBaseStorageHandler.java:64) at org.apache.hadoop.hive.hbase.HBaseStorageHandler.preCreateTable(HBaseStorageHandler.java:159) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:275) at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:394) at org.apache.hadoop.hive.ql.exec.DDLTask.createTable(DDLTask.java:2126)
       at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:166)
       at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:107)
at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:55)
       at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:633)
       at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:506)
       at org.apache.hadoop.hive.ql.Driver.run(Driver.java:384)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:138) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:197)
       at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:302)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
)
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask

First of all, i use Hbase-0.20.6 and Hive-0.6.0 and post this issue in this list and Igot a reply below :

From that wiki page:

"If you are not using hbase-0.20.3, you will need to rebuild the handler with the 
HBase jar matching your version, and change the --auxpath above accordingly. Failure to 
use matching versions will lead to misleading connection failures such as 
MasterNotRunningException since the HBase RPC protocol changes often."

JVS

On Dec 29, 2010, at 5:20 AM, Adarsh Sharma wrote


I think Hive-0.6.0 jars is incompatible with Hadoop jars.

My cluster is running correctly. Hbase is running properly and Hive too and I can create table in them but issue arises when Hive/Hbase Integration comes into play. Now I use Hbase-0.20.3 but the problem remains the same. Please guide how to solve this error.

My hive.log says :

2011-01-06 09:53:15,056 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle "org.eclipse.jdt.core" requires "org.eclipse.core.resources" but it cannot be resolved. 2011-01-06 09:53:15,056 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle "org.eclipse.jdt.core" requires "org.eclipse.core.resources" but it cannot be resolved. 2011-01-06 09:53:15,058 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle "org.eclipse.jdt.core" requires "org.eclipse.core.runtime" but it cannot be resolved. 2011-01-06 09:53:15,058 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle "org.eclipse.jdt.core" requires "org.eclipse.core.runtime" but it cannot be resolved. 2011-01-06 09:53:15,059 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle "org.eclipse.jdt.core" requires "org.eclipse.text" but it cannot be resolved. 2011-01-06 09:53:15,059 ERROR DataNucleus.Plugin (Log4JLogger.java:error(115)) - Bundle "org.eclipse.jdt.core" requires "org.eclipse.text" but it cannot be resolved.
~
and when issue the create table command it says :

2011-01-06 09:55:33,076 WARN zookeeper.ClientCnxn (ClientCnxn.java:run(967)) - Exception closing session 0x0 to sun.nio.ch.selectionkeyi...@2d8b4ccb
java.net.ConnectException: Connection refused
       at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:933) 2011-01-06 09:55:33,078 WARN zookeeper.ClientCnxn (ClientCnxn.java:cleanup(1001)) - Ignoring exception during shutdown input
java.nio.channels.ClosedChannelException
at sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:638)
       at sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
at org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:999) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:970) 2011-01-06 09:55:33,079 WARN zookeeper.ClientCnxn (ClientCnxn.java:cleanup(1006)) - Ignoring exception during shutdown output
java.nio.channels.ClosedChannelException
at sun.nio.ch.SocketChannelImpl.shutdownOutput(SocketChannelImpl.java:649)
       at sun.nio.ch.SocketAdaptor.shutdownOutput(SocketAdaptor.java:368)
at org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1004) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:970) 2011-01-06 09:55:34,050 WARN zookeeper.ClientCnxn (ClientCnxn.java:run(967)) - Exception closing session 0x0 to sun.nio.ch.selectionkeyi...@1bdb52c8
java.net.ConnectException: Connection refused
       at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) "hive.log" 2665L, 207384C
I attached my hbase.site.xml.

Please help me find the root cause.
Thanks and Regards
Adarsh Sharma
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
/**
 * Copyright 2009 The Apache Software Foundation
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-->
<configuration>

<property>
    <name>hbase.rootdir</name>
    <value>hdfs://s2-ratw-1:54310/hbase</value>
    <description>The directory shared by region servers.
    </description>
  </property>
  <property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
    <description>The mode the cluster will be in. Possible values are
      false: standalone and pseudo-distributed setups with managed Zookeeper
      true: fully-distributed with unmanaged Zookeeper Quorum (see hbase-env.sh)
    </description>
  </property>
   <property>
      <name>hbase.zookeeper.property.clientPort</name>
      <value>2222</value>
      <description>Property from ZooKeeper's config zoo.cfg.
      The port at which the clients will connect.
      </description>
    </property>
     <property>
      <name>hbase.zookeeper.quorum</name>
      <value>192.168.1.103,192.168.1.114,192.168.1.115,192.168.1.104,192.168.1.107,192.168.1.101,192.168.1.110</value>
      <description>Comma separated list of servers in the ZooKeeper Quorum.
      For example, "host1.mydomain.com,host2.mydomain.com,host3.mydomain.com".
      By default this is set to localhost for local and pseudo-distributed modes
      of operation. For a fully-distributed setup, this should be set to a full
      list of ZooKeeper quorum servers. If HBASE_MANAGES_ZK is set in hbase-env.sh
      this is the list of servers which we will start/stop ZooKeeper on.
      </description>
    </property>

 <property>
      <name>hbase.zookeeper.property.dataDir</name>
      <value>/hdd1-1/zookeeper_tmp</value>
      <description>Property from ZooKeeper's config zoo.cfg.
      The directory where the snapshot is stored.
      </description>
    </property>

</configuration>

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