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This patch adds documentation and a small utility for users wishing to run the random query generator against Oracle as a reference database. In particular, the patch * points users toward installing Oracle Database. * provides directions on incorporating a Python Oracle client (cx_Oracle) into our impala-python virtual environment. * provides a small utility that will verify installation and connectivity between client and server This documentation isn't meant to be a complete guide. Other patches will add documentation for actually loading random query generator test data into Oracle, for example. Change-Id: Ib3bf84b7afa8851c49a8d0f0a1ceded94f4de158 Reviewed-on: http://gerrit.cloudera.org:8080/4095 Reviewed-by: Thomas Tauber-Marshall <tmarshall@cloudera.com> Reviewed-by: Matthew Jacobs <mj@cloudera.com> Tested-by: Matthew Jacobs <mj@cloudera.com>
64 lines
2.1 KiB
Python
Executable File
64 lines
2.1 KiB
Python
Executable File
#!/usr/bin/env impala-python
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# This is a script that allows a tester to test his Oracle setup and cx_Oracle
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# installation within his impala-python environment. It's meant to be super simple. The
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# emphasis here is on a cx_Oracle connection and cursor with no other distractions, even
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# command line option parsing/handling. Modify the constants below and run:
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#
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# $ ./verify-oracle-connection.py
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#
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# If you get an exception, something is wrong. If cx_Oracle was able to make a
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# connection to Oracle and run a simple query, you'll get a success message.
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#
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# Refer to ORACLE.txt for help.
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# Importing the whole module instead of doing selective import seems to help find linker
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# errors.
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import cx_Oracle
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# Host on which Oracle Database lies.
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HOST = '127.0.0.1'
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# The values below are default for the version of Oracle Database Express Edition
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# tested. You may need to change these as needed:
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PORT = 1521
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SID = 'XE'
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USER = 'system'
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PASSWORD = 'oracle'
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def main():
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TEST_QUERY = 'SELECT 1 FROM DUAL'
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EXPECTED_RESULT = [(1,)]
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dsn = cx_Oracle.makedsn(HOST, PORT, SID)
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with cx_Oracle.connect(user=USER, password=PASSWORD, dsn=dsn) as conn:
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try:
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cursor = conn.cursor()
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query = cursor.execute(TEST_QUERY)
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rows = query.fetchall()
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finally:
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cursor.close()
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assert rows == EXPECTED_RESULT
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print 'success'
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if '__main__' == __name__:
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main()
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