[英]ODBC error while accessing drill through python
I get the below error while I try to use drill through python: 当我尝试通过python钻取时出现以下错误:
Traceback (most recent call last): File "/home/ubuntu/ChurnPrediction/OBDCtest.py", line 5, in <module> conn = pyodbc.connect("DSN=drill64", autocommit=True) pyodbc.Error: ('01000', "[01000] [unixODBC][Driver Manager]Can't open lib '/opt/mapr/drillodbc/lib/64/libmaprdrillodbc64.so' : file not found (0) (SQLDriverConnect)") [Finished in 0.3s with exit code 1]
Below is the sample code: 下面是示例代码:
import pyodbc from pandas import * conn = pyodbc.connect("DSN=drill64", autocommit=True) print conn
Below is additional information on running iodbctest: 以下是有关运行iodbctest的其他信息:
root@ubuntu-Vostro-1450:/home/ubuntu# iodbctest iODBC Demonstration program This program shows an interactive SQL processor Driver Manager: 03.52.0709.0909 root @ ubuntu-Vostro-1450:/ home / ubuntu#iodbctest iODBC演示程序此程序显示一个交互式SQL处理器驱动程序管理器:03.52.0709.0909
Enter ODBC connect string (? shows list): ? 输入ODBC连接字符串(?显示列表):?
Sample MapR Drill DSN 32 | MapR Drill DSN 32示例| MapR Drill ODBC Driver 32-bit
MapR Drill ODBC驱动程序32位
Sample MapR Drill DSN 64 | MapR Drill DSN 64示例| MapR Drill ODBC Driver 64-bit
MapR Drill ODBC驱动程序64位
Enter ODBC connect string (? shows list): Sample MapR Drill DSN 64 1: SQLDriverConnect = [iODBC][Driver Manager]libdrillClient.so: cannot open shared object file: No such file or directory (0) SQLSTATE=00000 2: SQLDriverConnect = [iODBC][Driver Manager]Specified driver could not be loaded (0) SQLSTATE=IM003 输入ODBC连接字符串(?显示列表):示例MapR Drill DSN 64 1:SQLDriverConnect = [iODBC] [Driver Manager] libdrillClient.so:无法打开共享对象文件:无此类文件或目录(0)SQLSTATE = 00000 2:SQLDriverConnect = [iODBC] [驱动程序管理器]指定的驱动程序无法加载(0)SQLSTATE = IM003
I think you probably need to set your LD_LIBRARY_PATH, like this: 我认为您可能需要设置LD_LIBRARY_PATH,如下所示:
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/mapr/drillodbc/lib/64
Then you should not see any "not found" errors when running this command: 然后,在运行此命令时,您应该不会看到任何“未找到”错误:
ldd /opt/mapr/drillodbc/lib/64/libmaprdrillodbc64.so
Here are all the steps I used to install Drill on Ubuntu: 这是我在Ubuntu上安装Drill的所有步骤:
First download and install the latest MapR ODBC rpm, like this: 首先下载并安装最新的MapR ODBC rpm,如下所示:
wget http://package.mapr.com/tools/MapR-ODBC/MapR_Drill/MapRDrill_odbc_v1.3.0.1009/maprdrill-1.3.0.1009-1.x86_64.rpm
rpm2cpio maprdrill-1.3.0.1009-1.x86_64.rpm | cpio -idmv
sudo mv opt/mapr/drill /opt/mapr/drillodbc
cd /opt/mapr/drillodbc/Setup
cp mapr.drillodbc.ini ~/.mapr.drillodbc.ini
cp odbc.ini ~/.odbc.ini
cp odbcinst.ini ~/.odbcinst.ini
# Edit the properties in those ini files according to your needs
# Put the following exports also in ~/.bashrc
export ODBCINI=~/.odbc.ini
export MAPRDRILLINI=~/.mapr.drillodbc.ini
export LD_LIBRARY_PATH=/usr/local/lib:/opt/mapr/drillodbc/lib/64:/usr/lib64
Then update those .ini files, accordingly. 然后相应地更新那些.ini文件。 Here is how I setup my ini files to connect to Drill:
这是我设置ini文件以连接到Drill的方法:
odbc.ini: odbc.ini:
[ODBC]
Trace=yes
Tracefile=/tmp/trace.txt
[ODBC Data Sources]
MapR Drill 64-bit=MapR Drill ODBC Driver 64-bit
[drill64]
# This key is not necessary and is only to give a description of the data source.
Description=MapR Drill ODBC Driver (64-bit) DSN
# Driver: The location where the ODBC driver is installed to.
Driver=/opt/mapr/drillodbc/lib/64/libdrillodbc_sb64.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 ConnectionType, AdvancedProperties, Catalog, Schema should be set here.
# If ConnectionType is Direct, include Host and Port. If ConnectionType is ZooKeeper, include ZKQuorum and ZKClusterID
# They can also be specified on the connection string.
# AuthenticationType: No authentication; Basic Authentication
ConnectionType=Direct
HOST=nodea
PORT=31010
ZKQuorum=[Zookeeper Quorum]
ZKClusterID=[Cluster ID]
AuthenticationType=No Authentication
UID=[USERNAME]
PWD=[PASSWORD]
DelegationUID=
AdvancedProperties=CastAnyToVarchar=true;HandshakeTimeout=5;QueryTimeout=180;TimestampTZDisplayTimezone=utc;ExcludedSchemas=sys,INFORMATION_SCHEMA;NumberOfPrefetchBuffers=5;
Catalog=DRILL
Schema=
odbcinst.ini: odbcinst.ini:
[ODBC Drivers]
MapR Drill ODBC Driver 32-bit=Installed
MapR Drill ODBC Driver 64-bit=Installed
[MapR Drill ODBC Driver 32-bit]
Description=MapR Drill ODBC Driver(32-bit)
Driver=/opt/mapr/drillodbc/lib/32/libdrillodbc_sb32.so
[MapR Drill ODBC Driver 64-bit]
Description=MapR Drill ODBC Driver(64-bit)
Driver=/opt/mapr/drillodbc/lib/64/libdrillodbc_sb64.so
mapr.drillodbc.ini mapr.drillodbc.ini
[Driver]
DisableAsync=0
DriverManagerEncoding=UTF-16
ErrorMessagesPath=/opt/mapr/drillodbc/ErrorMessages
LogLevel=0
LogPath=[LogPath]
SwapFilePath=/tmp
ODBCInstLib=/usr/lib/x86_64-linux-gnu/libodbcinst.so.1.0.0
Finally, if you've installed and configured the ODBC driver correctly, then the command python -c 'import pyodbc; print(pyodbc.dataSources()); print(pyodbc.connect("DSN=drill64", autocommit=True))'
最后,如果您已正确安装和配置了ODBC驱动程序,则命令
python -c 'import pyodbc; print(pyodbc.dataSources()); print(pyodbc.connect("DSN=drill64", autocommit=True))'
python -c 'import pyodbc; print(pyodbc.dataSources()); print(pyodbc.connect("DSN=drill64", autocommit=True))'
python -c 'import pyodbc; print(pyodbc.dataSources()); print(pyodbc.connect("DSN=drill64", autocommit=True))'
should output information like this: python -c 'import pyodbc; print(pyodbc.dataSources()); print(pyodbc.connect("DSN=drill64", autocommit=True))'
应该输出如下信息:
{'ODBC': '', 'drill64': '/opt/mapr/drillodbc/lib/64/libdrillodbc_sb64.so'} <pyodbc.Connection object at 0x7f5ec4a20200>
For more information about setting up Apache Drill, check out this blog post: http://www.bigendiandata.com/2017-05-01-Apache_Drill/ . 有关设置Apache Drill的更多信息,请查看此博客文章: http : //www.bigendiandata.com/2017-05-01-Apache_Drill/ 。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.