Issue searches containing "issueLinkType" may not work depending on the amount of existing links

Issue Summary

JQL searches that include the issueLinkType field may not work depending on the amount of issues and links that exist.

Environment

Cloud

• This behavior does not change between the new and old issue view

Steps to Reproduce

Although this problem does not occur always, it may happen in instances with a considerably high amount of issues (i.e. 300k+ issues).

1. To replicate, run a simple search containing the issueLinkType field
   • Example: issueLinkType is not EMPTY

Expected Results

Search returns issues that match search criteria

Actual Results

An error saying "An unknown error occurred while trying to perform a search."

A failed request with a response code of "JQL too complex" may be returned in the Browser's console

Workaround

Limiting the search criteria may be a valid workaround.

• Example: project = <Project A> and issueLinkType is not EMPTY

In case that search does not work, it is possible to try a different approach:

• Create a filter filter like: issueLinkType is EMPTY;
• Perform the search like the following: project = <project> AND filter != "filter"