[5/6] incubator-predictionio git commit: Update upgrade.html.md for breaking changes

[ch...@apache.org]

Update upgrade.html.md for breaking changes


Project: http://git-wip-us.apache.org/repos/asf/incubator-predictionio/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-predictionio/commit/018ea8e3
Tree: http://git-wip-us.apache.org/repos/asf/incubator-predictionio/tree/018ea8e3
Diff: http://git-wip-us.apache.org/repos/asf/incubator-predictionio/diff/018ea8e3

Branch: refs/heads/develop
Commit: 018ea8e34261f0929ad6d4c669fe80d7520bae16
Parents: 9340561
Author: Chan Lee <ch...@gmail.com>
Authored: Sun Sep 17 10:03:07 2017 -0700
Committer: Chan Lee <ch...@gmail.com>
Committed: Sun Sep 17 10:03:40 2017 -0700

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 docs/manual/source/resources/upgrade.html.md | 7 +++++++
 1 file changed, 7 insertions(+)
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http://git-wip-us.apache.org/repos/asf/incubator-predictionio/blob/018ea8e3/docs/manual/source/resources/upgrade.html.md
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diff --git a/docs/manual/source/resources/upgrade.html.md b/docs/manual/source/resources/upgrade.html.md
index f708fb8..2533c6d 100644
--- a/docs/manual/source/resources/upgrade.html.md
+++ b/docs/manual/source/resources/upgrade.html.md
@@ -36,6 +36,13 @@ To upgrade and use new version of PredictionIO, do the following:
 
 In addition, please take notes of the following for specific version upgrade.
 
+## Upgrade to 0.12.0
+
+In 0.12.0, Elasticsearch 5.x client has been reimplemented as a singleton.
+Engine templates directly using Elasticsearch 5.x StorageClient require
+update for compatibility. See [pull request]
+(https://github.com/apache/incubator-predictionio/pull/421) for details.
+
 ## Upgrade to 0.11.0
 
 Starting from 0.11.0, PredictionIO no longer bundles any JDBC drivers in the