Kunal Khatua created DRILL-6879:
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Summary: Indicate a warning in the WebUI when a query makes no
progress for a long time
Key: DRILL-6879
URL: https://issues.apache.org/jira/browse/DRILL-6879
Project: Apache Drill
Issue Type: Improvement
Components: Execution - Monitoring, Web Server
Affects Versions: 1.14.0
Reporter: Kunal Khatua
Assignee: Kunal Khatua
Fix For: 1.16.0
Attachments: image-2018-12-04-11-54-54-247.png
When running a very large query on a cluster with limited resource, we noticed
that one of the node's VM thread freezes the fragment threads as it tries to do
some work (GC perhaps?). This is a clear indication that the query is stuck in
a weird state where it might not recover from.
Under such circumstances, it makes sense to cancel or atleast warn the user on
that page of the query exceeding a certain threshold.
For detecting this, the user will find that the {{Last Progress}} column in the
Fragments Overview section will show large times.
!image-2018-12-04-11-54-54-247.png|thumbnail!
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