Regex error when extracting fields as delimiter.

[jbender72]

Hello,

Trying to renames fields for CIM compliance, and I see this pop up when trying to rename via deliminer.  Any field I try I get this warning.  Although it lets me save?

Thanks

[bowesmana]

That's one humungous regex! Your regex is doing a lot of lookahead/backtracking, so it's hitting the limits, see

https://docs.splunk.com/Documentation/Splunk/8.1.1/Admin/Limitsconf

options are to split up your rex or to find an more efficient way to CIM map/extract the fields 😞

[jbender72]

That's what I mean, this just popped up out of "nowhere", looking for a solution.  I will look into limits.conf  thank you.

[scelikok · Accepted solution]

Hi @jbender72,

I think it is complaining because of too many fields for delimiters. You can try EVAL or FIELDALIAS to create CIM compaint field on your sourcetype like below;

EVAL-src=srcip
or
FIELDALIAS-src=srcip AS src

If this reply helps you an upvote is appreciated.