topic Re: How to list unsuccessfully extracted fields event? in Splunk Search

How to list unsuccessfully extracted fields event?

hjwang — Tue, 07 Jun 2011 02:35:52 GMT

dear all

as title mentioned , i found some fields extraction can not reach 100 percent on total event, how can i list or query this unsuccessfully extracted fields to see unexpected log format?

thanks in advance.

Re: How to list unsuccessfully extracted fields event?

sideview — Tue, 07 Jun 2011 04:30:41 GMT

If you're trying to extract a field called 'fieldName', and you have a search that you think should extract the value from all events, run this:

<your search> | where isnull(fieldName)

You can take those events and look at them in a tool like RegexBuddy to see where the extraction is breaking down. You can also play around with other search language tricks that can show you representative events across the whole set, like:

<your search> | where isnull(fieldname) | dedup punct

Re: How to list unsuccessfully extracted fields event?

hjwang — Tue, 07 Jun 2011 06:31:08 GMT

Thanks a lot,nick. It's really helpful for me :).

Re: How to list unsuccessfully extracted fields event?

eashwar — Sat, 16 Mar 2013 18:33:13 GMT

you can also use this

YourSearch NOT fieldName="*"

happy splunking.