How to Access Hive via Python?

Question

https://cwiki.apache.org/confluence/display/Hive/HiveClient#HiveClient-Python appears to be outdated.

When I add this to /etc/profile:

export PYTHONP         


        

Answer 1

I believe the easiest way is to use PyHive.

To install you'll need these libraries:

pip install sasl
pip install thrift
pip install thrift-sasl
pip install PyHive

Please note that although you install the library as PyHive, you import the module as pyhive, all lower-case.

If you're on Linux, you may need to install SASL separately before running the above. Install the package libsasl2-dev using apt-get or yum or whatever package manager for your distribution. For Windows there are some options on GNU.org, you can download a binary installer. On a Mac SASL should be available if you've installed xcode developer tools (xcode-select --install in Terminal)

After installation, you can connect to Hive like this:

from pyhive import hive
conn = hive.Connection(host="YOUR_HIVE_HOST", port=PORT, username="YOU")

Now that you have the hive connection, you have options how to use it. You can just straight-up query:

cursor = conn.cursor()
cursor.execute("SELECT cool_stuff FROM hive_table")
for result in cursor.fetchall():
  use_result(result)

...or to use the connection to make a Pandas dataframe:

import pandas as pd
df = pd.read_sql("SELECT cool_stuff FROM hive_table", conn)

Answer 2

similar to @python-starter solution. But, commands package is not avilable on python3.x. So Alternative solution is to use subprocess in python3.x

import subprocess

cmd = "hive -S -e 'SELECT * FROM db_name.table_name LIMIT 1;' "

status, output = subprocess.getstatusoutput(cmd)

if status == 0:
   print(output)
else:
   print("error")

Answer 3

You could use python JayDeBeApi package to create DB-API connection from Hive or Impala JDBC driver and then pass the connection to pandas.read_sql function to return data in pandas dataframe.

import jaydebeapi
# Apparently need to load the jar files for the first time for impala jdbc driver to work 
conn = jaydebeapi.connect('com.cloudera.hive.jdbc41.HS2Driver',
['jdbc:hive2://host:10000/db;AuthMech=1;KrbHostFQDN=xxx.com;KrbServiceName=hive;KrbRealm=xxx.COM', "",""],
jars=['/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/HiveJDBC41.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/TCLIServiceClient.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/commons-codec-1.3.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/commons-logging-1.1.1.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/hive_metastore.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/hive_service.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/httpclient-4.1.3.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/httpcore-4.1.3.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/libfb303-0.9.0.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/libthrift-0.9.0.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/log4j-1.2.14.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/ql.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/slf4j-api-1.5.11.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/slf4j-log4j12-1.5.11.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/zookeeper-3.4.6.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/ImpalaJDBC41.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/TCLIServiceClient.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/commons-codec-1.3.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/commons-logging-1.1.1.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/hive_metastore.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/hive_service.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/httpclient-4.1.3.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/httpcore-4.1.3.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/libfb303-0.9.0.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/libthrift-0.9.0.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/log4j-1.2.14.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/ql.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/slf4j-api-1.5.11.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/slf4j-log4j12-1.5.11.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/zookeeper-3.4.6.jar'
])

# the previous call have initialized the jar files, technically this call needs not include the required jar files
impala_conn = jaydebeapi.connect('com.cloudera.impala.jdbc41.Driver',
['jdbc:impala://host:21050/db;AuthMech=1;KrbHostFQDN=xxx.com;KrbServiceName=impala;KrbRealm=xxx.COM',"",""],
jars=['/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/HiveJDBC41.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/TCLIServiceClient.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/commons-codec-1.3.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/commons-logging-1.1.1.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/hive_metastore.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/hive_service.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/httpclient-4.1.3.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/httpcore-4.1.3.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/libfb303-0.9.0.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/libthrift-0.9.0.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/log4j-1.2.14.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/ql.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/slf4j-api-1.5.11.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/slf4j-log4j12-1.5.11.jar',
'/hadp/opt/jdbc/hive_jdbc_2.5.18.1050/2.5.18.1050 GA/Cloudera_HiveJDBC41_2.5.18.1050/zookeeper-3.4.6.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/ImpalaJDBC41.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/TCLIServiceClient.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/commons-codec-1.3.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/commons-logging-1.1.1.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/hive_metastore.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/hive_service.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/httpclient-4.1.3.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/httpcore-4.1.3.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/libfb303-0.9.0.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/libthrift-0.9.0.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/log4j-1.2.14.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/ql.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/slf4j-api-1.5.11.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/slf4j-log4j12-1.5.11.jar',
'/hadp/opt/jdbc/impala_jdbc_2.5.35/2.5.35.1055 GA/Cloudera_ImpalaJDBC41_2.5.35/zookeeper-3.4.6.jar'
])

import pandas as pd
df1 = pd.read_sql("SELECT * FROM tablename", conn)
df2 = pd.read_sql("SELECT * FROM tablename", impala_conn)

conn.close()
impala_conn.close()

Answer 4

I have solved the same problem with you，here is my operation environment( System:linux Versions:python 3.6 Package:Pyhive) please refer to my answer as follows:

from pyhive import hive
conn = hive.Connection(host='149.129.***.**', port=10000, username='*', database='*',password="*",auth='LDAP')

The key point is to add the reference password & auth and meanwhile set the auth equal to 'LDAP' . Then it works well, any questions please let me know