Joe McDonnell created IMPALA-14172:
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Summary: test_cancellation.py sees "'NoneType' object has no
attribute 'columns'"
Key: IMPALA-14172
URL: https://issues.apache.org/jira/browse/IMPALA-14172
Project: IMPALA
Issue Type: Bug
Components: Backend
Affects Versions: Impala 5.0.0
Reporter: Joe McDonnell
TestCancellationParallel.test_cancel_select hit this error:
{noformat}
query_test/test_cancellation.py:276: in test_cancel_select
self.execute_cancel_test(vector)
query_test/test_cancellation.py:191: in execute_cancel_test
use_kill_query_statement=vector.get_value('use_kill_query_statement'))
util/cancel_util.py:200: in cancel_query_and_validate_state
thread, cancel_delay, join_before_close, use_kill_query_statement)
util/cancel_util.py:267: in __run_cancel_query_and_validate_state
and not join_before_close), str_fetch_error
E AssertionError: Exception in fetch_results: 'NoneType' object has no
attribute 'columns'
E Traceback (most recent call last):
E File "/data0/jenkins/Impala/tests/util/cancel_util.py", line 137, in run
E result = self.client.fetch(self.query, self.handle)
E File "/data0/jenkins/Impala/tests/common/impala_connection.py", line
1099, in fetch
E return self.__get_operation(operation_handle).fetch(max_rows=max_rows)
E File
"/data/jenkins/Impala/infra/python/env-gcc10.4.0/lib/python2.7/site-packages/impala/hiveserver2.py",
line 1509, in fetch
E convert_strings_to_unicode=convert_strings_to_unicode)
E File
"/data/jenkins/Impala/infra/python/env-gcc10.4.0/lib/python2.7/site-packages/impala/hiveserver2.py",
line 1516, in _wrap_results
E convert_strings_to_unicode=convert_strings_to_unicode)
E File
"/data/jenkins/Impala/infra/python/env-gcc10.4.0/lib/python2.7/site-packages/impala/hiveserver2.py",
line 1042, in __init__
E for (i, col) in enumerate(trowset.columns)]
E AttributeError: 'NoneType' object has no attribute 'columns'{noformat}
This is happening when a query is killed via "KILL QUERY":
{noformat}
-- 2025-06-14 20:52:49,244 INFO MainThread: hs2: executing against Impala
at localhost:21050. session: e64409199b769778:6c996b47da987cbe main_cursor:
True user: None
KILL QUERY 'ed49f1eef22bed38:c5eae66b00000000';
-- 2025-06-14 20:52:59,146 INFO FetchingThread: minimal_hs2: Stop fetching
results
-- 2025-06-14 20:52:59,921 INFO MainThread:
c740fffdd7a5009e:1baef1fc00000000: query started
-- 2025-06-14 20:52:59,922 INFO MainThread:
c740fffdd7a5009e:1baef1fc00000000: getting log for operation
-- 2025-06-14 20:52:59,923 INFO MainThread:
c740fffdd7a5009e:1baef1fc00000000: getting runtime profile operation
-- 2025-06-14 20:52:59,923 INFO MainThread:
c740fffdd7a5009e:1baef1fc00000000: closing query for operation
-- 2025-06-14 20:52:59,924 INFO MainThread: hs2: closing 1 sync and 0 async
hs2 connections to: localhost:21050
-- 2025-06-14 20:52:59,925 INFO MainThread: minimal_hs2: closing connection
to: localhost:21050{noformat}
This could happen on other tests in test_cancellation.py.
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