[AIRFLOW-6954] Use DagRunType instead of ID_PREFIX in run_id

[turbaszek]

Now we have the DagRunType there's no more need to keep ID_PREFIX and ID_FORMAT_PREFIX used for run_id.

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Issue link: AIRFLOW-6954

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[mik-laj]

Why do we need this method?

[turbaszek]

Hm, it seems to be used only in tests. Should I remove it?

[mik-laj]

Yes. Yes. Fstrings are a better idea. It's clearer

[mik-laj]

[mik-laj]

Can this method create this template by itself? It seems to me that this template does not change and it will always be {DagRunType}__{execution_date}

[turbaszek]

Nearly always, backfill has only one underscore

[mik-laj]

We need to standardize it if we want to introduce a new column in the table later. I would be happy if this PR cleaned up all the weirdnesses about DagRunType. In the next PR, we will update the database model and queries.

Cleaning up this mess is crucial for performance.

select * from test_runs where run_type=‘{}’
(0.0284, 0.037, 0.025)
select * from test_runs where run_id  like ‘{}%’
(0.0426, 0.0531, 0.0377)
type / like [-33.35%, -28.89%, -32.99%]
(avg, min, max)

[turbaszek]

@mik-laj I agree so I used the double underscore

[codecov-io]

Codecov Report

Merging #7583 into master will decrease coverage by 0.51%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7583      +/-   ##
==========================================
- Coverage   86.98%   86.47%   -0.52%     
==========================================
  Files         904      904              
  Lines       43728    43722       -6     
==========================================
- Hits        38037    37808     -229     
- Misses       5691     5914     +223     

Impacted Files	Coverage Δ
airflow/jobs/base_job.py	91.54% <ø> (ø)
airflow/jobs/scheduler_job.py	90.68% <ø> (ø)
airflow/api/common/experimental/mark_tasks.py	95.51% <100.00%> (+0.02%)	⬆️
airflow/api/common/experimental/trigger_dag.py	98.07% <100.00%> (ø)
airflow/jobs/backfill_job.py	92.11% <100.00%> (-0.05%)	⬇️
airflow/models/dagrun.py	95.68% <100.00%> (-0.10%)	⬇️
airflow/ti_deps/deps/dagrun_id_dep.py	100.00% <100.00%> (ø)
airflow/utils/types.py	100.00% <100.00%> (ø)
airflow/www/views.py	76.13% <100.00%> (ø)
...flow/providers/apache/cassandra/hooks/cassandra.py	21.51% <0.00%> (-72.16%)	⬇️
... and 14 more

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