PApostol commented on code in PR #30429:
URL: https://github.com/apache/airflow/pull/30429#discussion_r1198022876


##########
airflow/www/templates/airflow/dags.html:
##########
@@ -132,22 +132,38 @@ <h2>{{ page_title }}</h2>
   <div id="main_content">
     <div class="row dags-table-header">
       <div class="col-sm-4 col-md-4 no-x-padding">
-        <div class="form-group btn-group">
-          <a
-            href="{{ url_for('Airflow.index', status='all', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
-            class="btn {{ 'btn-primary' if status_filter == 'all' else 
'btn-default' }}"
-            title="Show active and paused DAGs">All <span class="badge">{{ 
"{:,}".format(status_count_all) }}</span></a>
-          <a
-            href="{{ url_for('Airflow.index', status='active', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
-            class="btn {{ 'btn-primary' if status_filter == 'active' else 
'btn-default' }}"
-            title="Show only active DAGs">Active <span class="badge">{{ 
"{:,}".format(status_count_active) }}</span></a>
-          <a
-            href="{{ url_for('Airflow.index', status='paused', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
-            class="btn {{ 'btn-primary' if status_filter == 'paused' else 
'btn-default' }}"
-            title="Show only paused DAGs">Paused <span class="badge">{{ 
"{:,}".format(status_count_paused) }}</span></a>
+        <div class="row">
+          <div class="col-sm-6 col-md-6">
+            <div class="form-group btn-group">
+              <a
+                href="{{ url_for('Airflow.index', status='all', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
+                class="btn {{ 'btn-primary' if status_filter == 'all' else 
'btn-default' }}"
+                title="Show active and paused DAGs">All <span class="badge">{{ 
"{:,}".format(status_count_all) }}</span></a>
+              <a
+                href="{{ url_for('Airflow.index', status='active', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
+                class="btn {{ 'btn-primary' if status_filter == 'active' else 
'btn-default' }}"
+                title="Show only active DAGs">Active <span class="badge">{{ 
"{:,}".format(status_count_active) }}</span></a>
+              <a
+                href="{{ url_for('Airflow.index', status='paused', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
+                class="btn {{ 'btn-primary' if status_filter == 'paused' else 
'btn-default' }}"
+                title="Show only paused DAGs">Paused <span class="badge">{{ 
"{:,}".format(status_count_paused) }}</span></a>
+            </div>
+          </div>
+          <div class="col-sm-3 col-md-3 text-center">
+            <div class="form-group btn-group">
+              <a
+                href="{{ url_for('Airflow.index', status='running', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
+                class="btn {{ 'btn-primary' if status_filter == 'running' else 
'btn-default' }}"
+                title="Show currently running DAG runs">Running <span 
class="badge">{{ "{:,}".format(status_count_running) }}</span></a>
+              <a
+                href="{{ url_for('Airflow.index', status='failed', 
search=request.args.get('search', None), tags=request.args.getlist('tags', 
None)) }}"
+                class="btn {{ 'btn-primary' if status_filter == 'failed' else 
'btn-default' }}"
+                title="Show DAGs with failed latest DAG run">Failed <span 
class="badge">{{ "{:,}".format(status_count_failed) }}</span></a>

Review Comment:
   The join `subq_join` added in `views.py` actually ensures that only DAGs 
whose latest run is `FAILED` will appear in the Failed tab. This is so DAGs 
won't be stuck in the Failed tab if they have an old failed run. Instead, users 
would be shown only the DAGs that are currently failing and require 
action/mitigation. If a failed DAG is re-run and succeeds, it doesn't show in 
the Failed tab anymore. I feel if we show DAGs with any failed past runs, then 
there is not much useful information for users.



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