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97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
#!/usr/bin/env python
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# Copyright (c) 2012 Cloudera, Inc. All rights reserved.
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# Impala tests for queries that query metadata and set session settings
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import logging
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import pytest
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from subprocess import call
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from tests.common.test_vector import *
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from tests.common.impala_test_suite import *
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# TODO: For these tests to pass, all table metadata must be created exhaustively.
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# the tests should be modified to remove that requirement.
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class TestMetadataQueryStatements(ImpalaTestSuite):
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@classmethod
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def get_workload(self):
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return 'functional-query'
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@classmethod
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def add_test_dimensions(cls):
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super(TestMetadataQueryStatements, cls).add_test_dimensions()
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# There is no reason to run these tests using all dimensions.
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cls.TestMatrix.add_constraint(lambda v:\
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v.get_value('table_format').file_format == 'text' and\
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v.get_value('table_format').compression_codec == 'none')
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def setup_method(self, method):
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self.cleanup_db('hive_test_db')
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def teardown_method(self, method):
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self.cleanup_db('hive_test_db')
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def test_show_tables(self, vector):
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self.run_test_case('QueryTest/show', vector)
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def test_describe_table(self, vector):
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self.run_test_case('QueryTest/describe', vector)
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def test_use_table(self, vector):
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self.run_test_case('QueryTest/use', vector)
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def cleanup_db(cls, db_name):
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# To drop a db, we need to first drop all the tables in that db
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if db_name in cls.hive_client.get_all_databases():
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for table_name in cls.hive_client.get_all_tables(db_name):
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cls.hive_client.drop_table(db_name, table_name, True)
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cls.hive_client.drop_database(db_name, True, False)
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@pytest.mark.execute_serially
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def test_impala_sees_hive_created_tables_and_databases(self, vector):
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db_name = 'hive_test_db'
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tbl_name = 'testtbl'
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self.client.refresh()
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result = self.execute_query("show databases");
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assert db_name not in result.data
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call(["hive", "-e", "CREATE DATABASE %s" % db_name])
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result = self.execute_query("show databases");
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assert db_name not in result.data
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self.client.refresh()
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result = self.execute_query("show databases");
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assert db_name in result.data
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# Make sure no tables show up in the new database
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result = self.execute_query("show tables in %s" % db_name);
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assert len(result.data) == 0
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self.client.refresh()
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result = self.execute_query("show tables in %s" % db_name);
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assert len(result.data) == 0
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call(["hive", "-e", "CREATE TABLE %s.%s (i int)" % (db_name, tbl_name)])
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result = self.execute_query("show tables in %s" % db_name)
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assert tbl_name not in result.data
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self.client.refresh()
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result = self.execute_query("show tables in %s" % db_name)
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assert tbl_name in result.data
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# Make sure we can actually use the table
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self.execute_query(("insert overwrite table %s.%s "
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"select 1 from functional.alltypes limit 5"
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% (db_name, tbl_name)))
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result = self.execute_scalar("select count(*) from %s.%s" % (db_name, tbl_name))
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assert int(result) == 5
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call(["hive", "-e", "DROP TABLE %s.%s " % (db_name, tbl_name)])
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call(["hive", "-e", "DROP DATABASE %s" % db_name])
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# Requires a refresh to see the dropped database
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result = self.execute_query("show databases");
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assert db_name in result.data
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self.client.refresh()
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result = self.execute_query("show databases");
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assert db_name not in result.data
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