[History] Same task not being appended

[tashrifbillah]

Description

Same task is being overwritten in the task history as opposed to being appended.

Way to reproduce

luigi.cfg

[core]
default-scheduler-url = http://localhost:8082

[scheduler]
record_task_history = True
state_path = /tmp/luigi-state.pickle

[task_history]
db_connection = sqlite:////tmp/luigi-task-hist.db

[worker]
check_complete_on_run = True

From the same directory of luigi.cfg, run this gist.

• run once

python sample_luigi_task.py

• clean up target files

rm /tmp/?.txt

• run again

python sample_luigi_task.py

Actual behavior

Run this gist to view contents of .db file, history can be also viewed in /history tab of the web visualizer

python sqlite_db_browser /tmp/luigi-task-hist.db

(1, 'TaskD__99914b932b', 'TaskD', 'pnl_servers')
(2, 'TaskB__99914b932b', 'TaskB', 'pnl_servers')
(3, 'TaskA__99914b932b', 'TaskA', 'pnl_servers')
(4, 'TaskC__99914b932b', 'TaskC', 'pnl_servers')

Expected behavior

The above block should appear twice:

(1, 'TaskD__99914b932b', 'TaskD', 'pnl_servers')
(2, 'TaskB__99914b932b', 'TaskB', 'pnl_servers')
(3, 'TaskA__99914b932b', 'TaskA', 'pnl_servers')
(4, 'TaskC__99914b932b', 'TaskC', 'pnl_servers')
(5, 'TaskD__99914b932b', 'TaskD', 'pnl_servers')
(6, 'TaskB__99914b932b', 'TaskB', 'pnl_servers')
(7, 'TaskA__99914b932b', 'TaskA', 'pnl_servers')
(8, 'TaskC__99914b932b', 'TaskC', 'pnl_servers')

Environment

CentOS 7 Linux 3.10.0-1127.13.1.el7.x86_64
Python 3.7.6
sqlalchemy.__version__
'1.3.13'

sqlite3.version
'2.6.0'

luigi.__version__
'3.0.1'

Did anyone else experience this issue? It could be a bug.

[tashrifbillah]

Same task is being overwritten

Okay, this is what I observed: until a certain time, it is being overwritten and then appended. Can anyone tell which configuration parameter is controlling that?

I observed the certain time to be >3 hours.

[stale[bot]]

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