[IMPALA-10062] TestCompressedNonText.test_insensitivity_to_extension can fail due to wrong filename

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 4.0.0
• Fix Version/s: Impala 4.0.0
• Component/s: Frontend
• Labels: broken-build flaky
• Target Version: Impala 4.0.0
• Epic Color: ghx-label-5
• Assignee: Unassigned
• Reporter: Joe McDonnell
• Created: 07/Aug/20 21:28
• Updated: 19/Oct/20 15:58
• Resolved: 19/Oct/20 15:58

Description

The fix for IMPALA-10005 added a new TestCompressedNonText test. It relies on Hive generating specific file names when writing these compressed tables (i.e. it expects a file named 000000_0). It looks like that is not guaranteed by dataload, which can lead to failures like this:

query_test/test_compressed_formats.py:142: in test_insensitivity_to_extension
    unique_database, 'tinytable', db_suffix, '000000_0', src_extension, ext)
query_test/test_compressed_formats.py:86: in _copy_and_query_compressed_file
    self.filesystem_client.copy(src_file, dest_file, overwrite=True)
util/hdfs_util.py:79: in copy
    self.hdfs_filesystem_client.copy(src, dst, overwrite)
util/hdfs_util.py:241: in copy
    '{0} copy failed: '.format(self.filesystem_type) + stderr + "; " + stdout
E   AssertionError: HDFS copy failed: cp: `/test-warehouse/tinytable_avro_snap/000000_0': No such file or directory
E   ;

The file list shows that the filename is actually "/test-warehouse/tinytable_avro_snap/000000_1"

We should update the test to tolerate this. The actual base filename doesn't matter for this test.

I have seen this exactly once so far.