Files
impala/tests/custom_cluster/test_hedged_reads.py
Joe McDonnell 82bd087fb1 IMPALA-11973: Add absolute_import, division to all eligible Python files
This takes steps to make Python 2 behave like Python 3 as
a way to flush out issues with running on Python 3. Specifically,
it handles two main differences:
 1. Python 3 requires absolute imports within packages. This
    can be emulated via "from __future__ import absolute_import"
 2. Python 3 changed division to "true" division that doesn't
    round to an integer. This can be emulated via
    "from __future__ import division"

This changes all Python files to add imports for absolute_import
and division. For completeness, this also includes print_function in the
import.

I scrutinized each old-division location and converted some locations
to use the integer division '//' operator if it needed an integer
result (e.g. for indices, counts of records, etc). Some code was also using
relative imports and needed to be adjusted to handle absolute_import.
This fixes all Pylint warnings about no-absolute-import and old-division,
and these warnings are now banned.

Testing:
 - Ran core tests

Change-Id: Idb0fcbd11f3e8791f5951c4944be44fb580e576b
Reviewed-on: http://gerrit.cloudera.org:8080/19588
Reviewed-by: Joe McDonnell <joemcdonnell@cloudera.com>
Tested-by: Joe McDonnell <joemcdonnell@cloudera.com>
2023-03-09 17:17:57 +00:00

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1.4 KiB
Python

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from __future__ import absolute_import, division, print_function
import pytest
from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
from tests.common.skip import SkipIf
@SkipIf.not_dfs
class TestHedgedReads(CustomClusterTestSuite):
""" Exercises the hedged reads code path.
NOTE: We unfortunately cannot force hedged reads on a minicluster, but we enable
this test to at least make sure that the code path doesn't break."""
@CustomClusterTestSuite.with_args("--use_hdfs_pread=true")
def test_hedged_reads(self, vector):
QUERY = "select * from tpch_parquet.lineitem limit 100"
self.client.execute(QUERY)