openstack/deb-python-cassandra-driver
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Merge pull request #743 from datastax/python-730

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PYTHON-730 Resulset.get_query_trace returns empty trace sometimes
This commit is contained in:
Alan Boudreault
2017-04-24 12:39:09 -04:00
committed by GitHub
parent 269a1ff490 5b143c9c12
commit f4ebe0143c
1 changed files with 2 additions and 1 deletions
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3
cassandra/query.py
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@@ -925,7 +925,8 @@ class QueryTrace(object):
session_results = self._execute(
SimpleStatement(self._SELECT_SESSIONS_FORMAT, consistency_level=query_cl), (self.trace_id,), time_spent, max_wait)
is_complete = session_results and session_results[0].duration is not None
# PYTHON-730: There is race condition that the duration mutation is written before started_at the for fast queries
is_complete = session_results and session_results[0].duration is not None and session_results[0].started_at is not None
if not session_results or (wait_for_complete and not is_complete):
time.sleep(self._BASE_RETRY_SLEEP * (2 ** attempt))
attempt += 1