当我尝试使用python：
时，我得到以下错误 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]
以下是示例代码：
import pyodbc
from pandas import *
conn = pyodbc.connect("DSN=drill64", autocommit=True)
print conn
以下是有关运行iodbctest的其他信息：
root @ ubuntu-Vostro-1450：/ home / ubuntu #iodbctest iODBC示范计划 该程序显示了一个交互式SQL处理器 司机经理：03.52.0709.0909
输入ODBC连接字符串（？显示列表）：？
MapR示例钻取DSN 32 | MapR钻取ODBC驱动程序32位
示例MapR钻DSN 64 | MapR钻取ODBC驱动程序64位
输入ODBC连接字符串（？显示列表）：示例MapR钻取DSN 64 1：SQLDriverConnect = [iODBC] [驱动程序管理器] libdrillClient.so：无法打开共享对象文件：没有这样的文件或目录（0）SQLSTATE = 00000 2：SQLDriverConnect = [iODBC] [Driver Manager]无法加载指定的驱动程序（0）SQLSTATE = IM003
答案 0 :(得分：0)
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
然后，在运行此命令时，您不应该看到任何“未找到”错误：
ldd /opt/mapr/drillodbc/lib/64/libmaprdrillodbc64.so
以下是我用于在Ubuntu上安装Drill的所有步骤：
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
然后相应地更新那些.ini文件。以下是我如何设置我的ini文件以连接到Drill：
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：
[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
[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
最后，如果您已正确安装并配置了ODBC驱动程序，那么命令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>
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/。