tests/custom_cluster/test_stats_extrapolation.py

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from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
from tests.common.test_dimensions import (
    create_exec_option_dimension,
    create_single_exec_option_dimension,
    create_uncompressed_text_dimension)

class TestStatsExtrapolation(CustomClusterTestSuite):

  @classmethod
  def get_workload(self):
    return 'functional-query'

  @classmethod
  def add_test_dimensions(cls):
    super(TestStatsExtrapolation, cls).add_test_dimensions()
    cls.ImpalaTestMatrix.add_dimension(create_single_exec_option_dimension())
    cls.ImpalaTestMatrix.add_dimension(
        create_uncompressed_text_dimension(cls.get_workload()))

  @CustomClusterTestSuite.with_args(impalad_args=('--enable_stats_extrapolation=true'))
  def test_stats_extrapolation(self, vector, unique_database):
    vector.get_value('exec_option')['num_nodes'] = 1
    vector.get_value('exec_option')['explain_level'] = 2
    self.run_test_case('QueryTest/stats-extrapolation', vector, unique_database)