Add migration note on the number of shards

This commit adds a migration note regarding the default number of shards changing from five to one. Relates #30539
elastic · Dec 7, 2018 · e8fe624 · kcm · Dec 7, 2018 · bigmisspanda
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commit e8fe624
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/docs/reference/migration/migrate_7_0/indices.asciidoc b/docs/reference/migration/migrate_7_0/indices.asciidoc
@@ -2,6 +2,11 @@
 [[breaking_70_indices_changes]]
 === Indices changes
 
+[float]
+==== Index creation no longer defaults to five shards
+Previous versions of Elasticsearch defaulted to creating five shards per index.
+Starting with 7.0.0, the default is now one index per shard.
+
 [float]
 ==== `:` is no longer allowed in index name