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Posted to commits@airflow.apache.org by "Jarek Potiuk (Jira)" <ji...@apache.org> on 2019/10/28 16:19:00 UTC
[jira] [Commented] (AIRFLOW-4333) DAGs wont run due to mysql lock?
UPDATE dag SET last_scheduler_run=%s WHERE dag.dag_id = %s
[ https://issues.apache.org/jira/browse/AIRFLOW-4333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16961217#comment-16961217 ]
Jarek Potiuk commented on AIRFLOW-4333:
---------------------------------------
Same here [~toopt4] ? Would that be possible that you reproduce it, connect to your database and execute this:
{code:java}
SHOW ENGINE INNODB STATUS
{code}
It would show details about the latest deadlock and give us more information on what is causing the problem.
> DAGs wont run due to mysql lock? UPDATE dag SET last_scheduler_run=%s WHERE dag.dag_id = %s
> -------------------------------------------------------------------------------------------
>
> Key: AIRFLOW-4333
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4333
> Project: Apache Airflow
> Issue Type: Bug
> Components: database
> Affects Versions: 1.10.3
> Reporter: t oo
> Priority: Major
>
> Process DagFileProcessor2805-Process:
> Traceback (most recent call last):
> File "/usr/lib64/python2.7/multiprocessing/process.py", line 267, in _bootstrap
> self.run()
> File "/usr/lib64/python2.7/multiprocessing/process.py", line 114, in run
> self._target(*self._args, **self._kwargs)
> File "/home/ec2-user/venv/local/lib/python2.7/site-packages/airflow/jobs.py", line 402, in helper
> pickle_dags)
> File "/home/ec2-user/venv/local/lib/python2.7/site-packages/airflow/utils/db.py", line 73, in wrapper
> return func(*args, **kwargs)
> File "/home/ec2-user/venv/local/lib/python2.7/site-packages/airflow/jobs.py", line 1731, in process_file
> dag.sync_to_db()
> File "/home/ec2-user/venv/local/lib/python2.7/site-packages/airflow/utils/db.py", line 73, in wrapper
> return func(*args, **kwargs)
> File "/home/ec2-user/venv/local/lib/python2.7/site-packages/airflow/models/__init__.py", line 4123, in sync_to_db
> session.commit()
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 1023, in commit
> self.transaction.commit()
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 487, in commit
> self._prepare_impl()
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 466, in _prepare_impl
> self.session.flush()
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2446, in flush
> self._flush(objects)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2584, in _flush
> transaction.rollback(_capture_exception=True)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 67, in __exit__
> compat.reraise(exc_type, exc_value, exc_tb)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2544, in _flush
> flush_context.execute()
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line 416, in execute
> rec.execute(self)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line 583, in execute
> uow,
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line 236, in save_obj
> update,
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line 976, in _emit_update_statements
> statement, multiparams
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 980, in execute
> return meth(self, multiparams, params)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/sql/elements.py", line 273, in _execute_on_connection
> return connection._execute_clauseelement(self, multiparams, params)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1099, in _execute_clauseelement
> distilled_params,
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1240, in _execute_context
> e, statement, parameters, cursor, context
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1458, in _handle_dbapi_exception
> util.raise_from_cause(sqlalchemy_exception, exc_info)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/util/compat.py", line 296, in raise_from_cause
> reraise(type(exception), exception, tb=exc_tb, cause=cause)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1236, in _execute_context
> cursor, statement, parameters, context
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/sqlalchemy/engine/default.py", line 536, in do_execute
> cursor.execute(statement, parameters)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/MySQLdb/cursors.py", line 206, in execute
> res = self._query(query)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/MySQLdb/cursors.py", line 312, in _query
> db.query(q)
> File "/home/ec2-user/venv/local/lib64/python2.7/site-packages/MySQLdb/connections.py", line 224, in query
> _mysql.connection.query(self, query)
> OperationalError: (MySQLdb._exceptions.OperationalError) (1205, 'Lock wait timeout exceeded; try restarting transaction') [SQL: u'UPDATE dag SET last_scheduler_run=%s WHERE dag.dag_id = %s'] [parameters: (datetime.datetime(2019, 4, 16, 16, 10, 56, 190949, tzinfo=<Timezone [UTC]>), 'netpos')] (Background on this error at: http://sqlalche.me/e/e3q8)
> [2019-04-16 16:11:52,712] \{sqlalchemy.py:81} WARNING - DB connection invalidated. Reconnecting...
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