[IMPALA-4434] test_no_conversion failing near DST changeover

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Impala 2.8.0
• Component/s: Backend
• Labels: asf broken-build
• Environment: UTC, ec3.4xlarge, ubuntu 14.04
• Assignee: Taras Bobrovytsky
• Reporter: Jim Apple
• Created: 05/Nov/16 02:41
• Updated: 18/Nov/16 01:09
• Resolved: 18/Nov/16 01:09

Description

To reproduce, run in an ec2 c3.4xlarge, using https://github.com/apache/incubator-impala/blob/master/bin/bootstrap_development.sh from a stock ubuntu 14.04 AMI.

 TestHiveParquetTimestampConversion.test_no_conversion[exec_option: {'disable_codegen': False, 'abort_on_error': 1, 'exec_single_node_rows_threshold': 0, 'batch_size': 0, 'num_nodes': 0} | table_format: parquet/none] 
custom_cluster/test_hive_parquet_timestamp_conversion.py:97: in test_no_conversion
    assert len(data.split('\n')) == expected_row_count
E   assert 1 == 0
E    +  where 1 = len([''])
E    +    where [''] = <built-in method split of str object at 0x7fc866f81508>('\n')
E    +      where <built-in method split of str object at 0x7fc866f81508> = ''.split

I also checked

$ python2.7
Python 2.7.6 (default, Jun 22 2015, 17:58:13) 
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> print time.tzname[time.localtime().tm_isdst]
UTC
>>> print time.localtime().tm_isdst                                                                                                                                                                                                            
0
>>> time.localtime()
time.struct_time(tm_year=2016, tm_mon=11, tm_mday=5, tm_hour=2, tm_min=32, tm_sec=37, tm_wday=5, tm_yday=310, tm_isdst=0)

DST ends in a couple days, and I think it used to end earlier in the year. Also, I think DST ended in the UK already while it is still DST here in California.

Issue Links

• blocks: IMPALA-3229 Allow all contributors (or at least committers?) to run GVM