Pentaho Kettle 连接 CDH Hive (No suitable driver found for jdbc:hive2 错误解决方法)

关键点: 

清理Kettle缓存:

rm -rf  /home/user/data-integration/./system/karaf/caches
rm -rf  /home/user/data-integration/./system/karaf/data

karaf 是Kettle用于实现插件的一个组件, 比如一些大数据有关的shim都算做kettle的插件

 

配置Kettle big data setting:

在 Kettle安装目录/data-integration/plugins/pentaho-big-data-plugin/plugin.properties 中找到配置项

active.hadoop.configuration=cdh513

这里的"cdh513"就是 Kettle安装目录/data-integration/plugins/pentaho-big-data-plugin/hadoop-configurations 下的子目录名字, 又称shim, 它相当于hadoop不同版本的驱动

默认有4个shim, 分别对应hadoop的4个发行版, 用哪个就在上述的plugin.properties里配置好

配置shim的Hadoop setting文件:

Kettle安装目录/data-integration/plugins/pentaho-big-data-plugin/hadoop-configurations/cdh513/下6个xml文件, 如core-site.xml, hbase-site.xml, hdfs-site.xml, yarn-site.xml, hive-site.xml, mapred-site.xml 

或者直接从集群那里拷贝覆盖.(CDP各组件配置文件路径: Hadoop: /etc/hadoop/conf,  hbase: /etc/hbase/conf, hive: /etc/hive/conf)

 

拷贝jar包:

运行kitchen或pan的时候如果报错: no suitable driver found for jdbc:hive2

可以复制一遍jar包到kettle的lib目录下 以及 active shim的lib目录下

CDH的Hive在  /opt/cloudera/parcels/CDH/lib/hive

可以把/opt/cloudera/parcels/CDH/lib/hive/lib下所有hive开头的jar包复制到 Kettle安装目录/data-integration/lib 和 Kettle安装目录/data-integration/plugins/pentaho-big-data-plugin/hadoop-configurations/cdh513/lib

例如(这里假设kettle安装在/opt下, 且当前生效的shim叫cdh513)

cp /opt/cloudera/parcels/CDH/lib/hive/lib/hive*.jar /opt/data-integration/plugins/pentaho-big-data-plugin/hadoop-configurations/cdh513/lib
cp /opt/cloudera/parcels/CDH/lib/hive/lib/hive*.jar /opt/data-integration/lib

然后再清理一遍kettle的缓存, 否则Kettle可能会不识别刚才拷贝的jar文件:

rm -rf  /home/fr-renjie.wei/data-integration/./system/karaf/caches
rm -rf  /home/fr-renjie.wei/data-integration/./system/karaf/data

 

No suitable driver found for jdbc:hive2

似乎linux上的Kettle本身在调用Hive jar包的过程中有什么bug, 这个问题经常出现, 网上也有很多人问到这个bug.

我遇到情况是, Kitchen调用job会报这个错, pan不会报错.

我的解决办法: 

1. 清理一次缓存(rm -rf /home/user/data-integration/./system/karaf/caches)
2. 运行kitchen

还有一个一劳永逸的办法, 直接改Kitchen.sh, 加上rm这句

#!/bin/sh

# *****************************************************************************
#
# Pentaho Data Integration
#
# Copyright (C) 2005-2018 by Hitachi Vantara : http://www.pentaho.com
#
# *****************************************************************************
#
# Licensed 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.
#
# *****************************************************************************


INITIALDIR="`pwd`"
BASEDIR="`dirname $0`"
cd "$BASEDIR"
DIR="`pwd`"
cd - > /dev/null
rm -rf  $BASEDIR/./system/karaf/caches #add this!

if [ "$1" = "-x" ]; then
  set LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$BASEDIR/lib
  export LD_LIBRARY_PATH
  export OPT="-Xruntracer $OPT"
  shift
fi

export IS_KITCHEN="true"

"$DIR/spoon.sh" -main org.pentaho.di.kitchen.Kitchen -initialDir "$INITIALDIR/" "$@"