Github user iraghumitra commented on the issue:
https://github.com/apache/metron/pull/620
@merrimanr I missed escaping values for the search request. I fixed it now,
the 'referer' search should work now. Supporting 'OR' and 'NOT' operators in
search request needs some work is it fine if I raise a JIRA and take some time
to work on it. I updated the PR summary to point out that OR and NOT or not
supported as of now.
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