Cherry-pick #23944 to 7.x: [Filebeat] Convert logstash logEvent.action objects to strings #24063
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Cherry-pick of PR #23944 to 7.x branch. Original message:
What does this PR do?
To prevent index failures resulting from indexing a mix of strings and nested objects as
logstash.log.log_event.action, this converts any objects to a stringified version of the object
using painless toString().
Fixes #20709
Why is it important?
See #20709 for details on the failure. This fixes index failures when ingesting Logstash logs.
Checklist
CHANGELOG.next.asciidoc
orCHANGELOG-developer.next.asciidoc
.Related issues