AQL Query results with 0 elements crashes UI

[nirav696]

My Environment

• ArangoDB Version: 3.12.2 Enterprise
• Deployment Mode: Single Server
• Deployment Strategy: sytemd
• Infrastructure: own
• Operating System: Ubuntu 22.04
• Total RAM in your machine: 64GB
• Disks in use: SSD
• Used Package: Ubuntu .deb

Component, Query & Data

Affected feature: AQL query using web interface

AQL query (if applicable):

filter false
return "abc"

AQL explain and/or profile (if applicable):

When running any AQL query that returns 0 elements, the UI crashes. The above query is just for reproducing the error. Any query that gets filtered down to 0 elements, crashes the UI.

Dataset:

30 collections, having from 10 documents to 200M documents.

Size of your Dataset on disk:

300GB

Replication Factor & Number of Shards (Cluster only):

Steps to reproduce

1. Run any Query on Arango UI with version 3.12.2 that returns 0 elements
2. UI Crashes and no results are shown
3. The same query when tested on 3.12.1 works fine

Problem: Crashing of Arango UI on AQL query execution where there are no results

Expected result: On AQL query execution on UI it should show 0 elements if there are no results

[Simran-B]

I can reproduce the problem with the arangodb/enterprise:3.12.2 image but not arangodb/enterprise-preview:devel-nightly. Therefore, it seems to be fixed for the upcoming 3.12.3.

[dothebart]

confirmed as being solved by https://github.com/arangodb/arangodb/commit/b44407d996e16ec444b34118aaf3765e44612c45#diff-ecec88c33adb7591ee6aa88e29b62ad52ef443611cba5e0f0ecac9b5725afdbaR4