Working around com.atlassian.jira.issue.search.ClauseTooComplexSearchException

Are you getting the following exception when you are running a JQL Tricks function?
​
2016-11-29 02:16:42,245 http-nio-80-exec-116 ERROR ra185165 136x31430237x9 6e0p70 153.53.2.125,192.127.253.68 /rest/issueNav/1/issueTable [c.a.j.p.i.service.issuetable.DefaultIssueTableService]com.atlassian.jira.issue.search.ClauseTooComplexSearchException: A the following query was too complex to generate a query from: {issue in functionName()}

Then you are hitting https://jira.atlassian.com/browse/JRA-19350. 

As you can see in the comment posted by Jozsef, you are hitting as limit set by Apache Lucene. This limit is not extendible by the JQL Tricks plugin, as it is handled in the JIRA core code. 

Having said that, there is an easy workaround. JIRA has an advanced property, named jira.search.maxclauses, which determines the maximum number of clauses possible in a JQL query. And its default value is 65000. If you have a query that potentially returns more than 65K results, you can override the property to have a bigger value, depending on the size of the resultset you have. 

Overriding the property can be done by adding the aforementioned property in jira-config.properties file, as mentioned at https://confluence.atlassian.com/jirakb/how-to-edit-the-jira-config-properties-file-317194938.html. 

In short, following are the steps:

1. Create jira-config.properties file under <jira-home> directory, if it doesn't already exist.
2. Add the jira.search.maxclauses property with the new value:
   
   jira.search.maxclauses = 100000
   
   Replace 100000 with a reasonable value for your environment.
3. Restart JIRA

After the above steps, the function will start working again.

If you need any assistance with these stops, or if the issue is not solved even after following these steps, please raise a support ticket in our JIRA.

PS: Don't forget to watch JRA-19350 for any fiutuire updates on that ticket from Atlassian.