Cherry-pick #10001 to 6.x: Emit error if fileset with multiple pipelines is being used with ES < 6.5 #10038
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Cherry-pick of PR #10001 to 6.x branch. Original message:
Follow up to #8914.
In #8914, we introduced the ability for Filebeat filesets to have multiple Ingest pipelines, the first one being the entry point. This feature relies on the Elasticsearch Ingest node having a
pipeline
processor andif
conditions for processors, both of which were introduced in Elasticsearch 6.5.0.This PR implements a check for whether a fileset has multiple Ingest pipelines AND is talking to an Elasticsearch cluster < 6.5.0. If that's the case, we emit an error.