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Merge pull request #20784 from eskibars/master 

Add a note that reindex does not set up mappings, etc
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Shane Connelly 2016-10-07 09:39:10 -07:00 committed by GitHub
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docs/reference/docs/reindex.asciidoc
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@ -3,6 +3,11 @@
experimental[The reindex API is new and should still be considered experimental. The API may change in ways that are not backwards compatible]
IMPORTANT: Reindex does not attempt to set up the destination index. It does
not copy the settings of the source index. You should set up the destination
index prior to running a `_reindex` action, including setting up mappings, shard
counts, replicas, etc.
The most basic form of `_reindex` just copies documents from one index to another.
This will copy documents from the `twitter` index into the `new_twitter` index: