Tal Levy f56097b57a Fixes GrokProcessor's ignorance of named-captures with same name. (#22131)
Grok was originally ignoring potential matches to named-capture groups
larger than one. For example, If you had two patterns containing the
same named field, but only the second pattern matched, it would fail to
pick this up.

This PR fixes this by exploring all potential places where a
named-capture was used and chooses the first one that matched.

Fixes #22117.
2016-12-13 13:19:55 -08:00
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