Impala ODBC 安装笔记
Impala在线文档介绍了 Impala ODBC接口安装和配置
http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH5/latest/Impala/Installing-and-Using-Impala/ciiu_impala_odbc.html
Impala ODBC 驱动下载地址:
http://www.cloudera.com/content/support/en/downloads/connectors.html
本文具体解说了CentOS-6.5-x86_64环境下 Impala ODBC的安装和使用。
一、检查unixODBC是否安装:
rpm -qa|grep unixODBC
假设没有安装。使用以下的命令安装:
yum install unixODBC
yum install unixODBC-devel
使用odbcinst命令查看unixODBC配置文件路径,不同版本号的unixODBC配置文件路径是不同的,假设是源码方式安装unixODBC,也能够通过编译參数--sysconfdir指定。
[root@h1 ~]# odbcinst -j
unixODBC 2.2.14
DRIVERS............: /etc/odbcinst.ini
SYSTEM DATA SOURCES: /etc/odbc.ini
FILE DATA SOURCES..: /etc/ODBCDataSources
USER DATA SOURCES..: /root/.odbc.ini
SQLULEN Size.......: 8
SQLLEN Size........: 8
SQLSETPOSIROW Size.: 8
二、安装Impala ODBC驱动
下载ClouderaImpalaODBC-2.5.15.1015-1.el6.x86_64.rpm,保存到:/home/soft 文件夹,并进行安装:
[root@h1 soft]# ll
total 16232
-rw-r--r--. 1 root root 16619934 Aug 24 06:37 ClouderaImpalaODBC-2.5.15.1015-1.el6.x86_64.rpm
[root@h1 soft]# rpm -ivh ClouderaImpalaODBC-2.5.15.1015-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:ClouderaImpalaODBC ########################################### [100%]
[root@h1 soft]#
安装完毕后的文件在:/opt/cloudera/impalaodbc 文件夹,这个文件夹包括了安装文档、lib包、配置文件演示样例。
[root@h1 impalaodbc]# pwd
/opt/cloudera/impalaodbc
[root@h1 impalaodbc]# ll
total 1016
-rwxr-xr-x. 1 root root 1007048 Apr 21 12:21 Cloudera ODBC Driver for Impala Install Guide.pdf
-rwxr-xr-x. 1 root root 12003 Apr 21 12:21 Cloudera-EULA.txt
drwxr-xr-x. 3 root root 4096 Aug 24 07:15 ErrorMessages
-rwxr-xr-x. 1 root root 3261 Apr 21 12:21 Readme.txt
-rwxr-xr-x. 1 root root 2350 Apr 21 12:21 Release Notes.txt
drwxr-xr-x. 2 root root 4096 Aug 24 07:15 Setup
drwxr-xr-x. 3 root root 4096 Aug 24 07:15 lib
[root@h1 impalaodbc]#
设置驱动的环境变量:
在 /etc/profile 最后加入:
export LD_LIBRARY_PATH=/usr/local/lib:/opt/cloudera/impalaodbc/lib/64
然后运行:source /etc/profile
使改动的脚本马上生效。
拷贝:cloudera.impalaodbc.ini 到 /etc/文件夹:
[root@h1 Setup]# pwd
/opt/cloudera/impalaodbc/Setup
[root@h1 Setup]# cp cloudera.impalaodbc.ini /etc/
[root@h1 Setup]#
改动:/etc/cloudera.impalaodbc.ini 中的例如以下条目:
# Generic ODBCInstLib
# iODBC
#ODBCInstLib=libiodbcinst.so # SimbaDM / unixODBC
ODBCInstLib=libodbcinst.so
也就是说不使用iODBC , 使用 unixODBC
三、改动/etc/odbc.ini 文件
參照 /opt/cloudera/impalaodbc/Setup/odbc.ini , 在/etc/odbc.ini 加入例如以下的内容:
[impalaodbc] # Description: DSN Description.
# This key is not necessary and is only to give a description of the data source.
Description=Cloudera ODBC Driver for Impala (64-bit) DSN # Driver: The location where the ODBC driver is installed to.
Driver=/opt/cloudera/impalaodbc/lib/64/libclouderaimpalaodbc64.so # The DriverUnicodeEncoding setting is only used for SimbaDM
# When set to 1, SimbaDM runs in UTF-16 mode.
# When set to 2, SimbaDM runs in UTF-8 mode.
#DriverUnicodeEncoding=2 # Values for HOST, PORT, KrbFQDN, and KrbServiceName should be set here.
# They can also be specified on the connection string.
HOST=172.16.230.152
PORT=21050
Database=default # The authentication mechanism.
# 0 - no authentication.
# 1 - Kerberos authentication
# 2 - Username authentication.
# 3 - Username/password authentication.
# 4 - Username/password authentication with SSL.
AuthMech=0 # Kerberos related settings.
KrbFQDN=
KrbRealm=
KrbServiceName= # Username/password authentication with SSL settings.
UID=
PWD=
CAIssuedCertNamesMismatch=1
TrustedCerts=/opt/cloudera/impalaodbc/lib/64/cacerts.pem # Specify the proxy user ID to use.
#DelegationUID= # General settings
TSaslTransportBufSize=1000
RowsFetchedPerBlock=1000
SocketTimeout=0
StringColumnLength=32767
UseNativeQuery=0
四、验证安装是否成功
运行 isql -v impalaodbc
[root@h1 ~]# isql -v impalaodbc
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
SQL> select * from tab1;
[S1000][unixODBC][Cloudera][ImpalaODBC] (110) Error while executing a query in Impala: [HY000] : Error: Error: could not match input
[ISQL]ERROR: Could not SQLPrepare
SQL> select * from tab1
+------------+------+-------------------------+------------------------------+
| id | col_1| col_2 | col_3 |
+------------+------+-------------------------+------------------------------+
| 1 | 1 | 123.123 | 2012-10-24 08:55:00 |
| 2 | 0 | 1243.5 | 2012-10-25 13:40:00 |
| 3 | 0 | 24453.325 | 2008-08-22 09:33:21.123000000|
| 4 | 0 | 243423.325 | 2007-05-12 22:32:21.334540000|
| 5 | 1 | 243.325 | 1953-04-22 09:11:33 |
+------------+------+-------------------------+------------------------------+
SQLRowCount returns -1
5 rows fetched
注意:运行的sql最后不要加封号。
这样配置后。C/C++程序就能够通过unixODBC訪问Impala中的数据了。
五、License问题
默认安装的Impala ODBC是评估版的,须要购买license。參见安装文档 Cloudera ODBC Driver for Impala Install Guide.pdf 中的这样一段话:
If you are installing a driver with an evaluation license and you have purchased a perpetual license, then copy the License.lic file you received via e-mail into the /opt/cloudera/impalaodbc/lib/32 or /opt/cloudera/impalaodbc/lib/64 folder, depending on
the version of the driver you installed.
评估时为多长时间,眼下还没找到答案。或者让你一直评估吧:)
原创作品。转载请注明出处 http://blog.csdn.net/yangzhaohui168/article/details/38800803
最新文章
- thinkphp5.0助手函数占用服务器资源
- JSP连接mysql数据库的重点
- [转]nodejs npm常用命令
- spring security remember me实现自动登录
- java配置自动任务,定期执行代码
- Hadoop集群中添加硬盘
- [转]AndroidTolls国内镜像
- hdoj 5317 RGCDQ
- IE-“无法浏览网页” 教你十招解决疑难杂症
- SQLite数据转换成sql server数据
- 命令行參数选项处理:getopt()及getopt_long()函数使用
- SqlParameter 使用
- hadoop-2.6.0源码编译
- servlet过滤器简化版
- C# WPF动点任意移动气泡画法(解决方案使用到数学勾股定理、正弦定理、向量知识)。
- python 时间模块time,datetime详细介绍
- laravel中ajax,post传值问题
- 03-封装BeanUtil工具类(javabean转map和map转javabean对象)
- Qt 编程指南 3 信号和槽沟通
- 【2017-2-20】C#运算符