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[DOCS] Adds note box about mappings to Transforms Painless examples (#64285) (#64363)

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István Zoltán Szabó 2020-10-29 17:35:38 +01:00 committed by GitHub
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docs/reference/transform/painless-examples.asciidoc
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@ -18,9 +18,17 @@ more about the Painless scripting language in the
* <<painless-compare>> * <<painless-compare>>
* <<painless-web-session>> * <<painless-web-session>>
NOTE: While the context of the following examples is the {transform} use case, [NOTE]
--
* While the context of the following examples is the {transform} use case,
the Painless scripts in the snippets below can be used in other {es} search the Painless scripts in the snippets below can be used in other {es} search
aggregations, too. aggregations, too.
* All the following examples use scripts, {transforms} cannot deduce mappings of
output fields when the fields are created by a script. {transforms-cap} don't
create any mappings in the the destination index for these fields, which means
they get dynamically mapped. Create the destination index prior to starting the
{transform} in case you want explicit mappings.
--
[[painless-top-hits]] [[painless-top-hits]]
== Getting top hits by using scripted metric aggregation == Getting top hits by using scripted metric aggregation