Every time I view one of my Streams, I getting this error message in red at the bottom of the page:
Loading field graph for ‘message’ failed with status 500.
The elasticsearch log show the following error at the same time:
Fielddata is disabled on text fields by default. Set fielddata=true on [message] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead.
How do I enable fielddata on text fields or how do I use a keyword field?