HyukjinKwon commented on a change in pull request #25757:
[SPARK-29052][DOCS][ML][PYTHON][CORE][R][SQL][SS] Create a Migration Guide tap
in Spark documentation
URL: https://github.com/apache/spark/pull/25757#discussion_r323169816
##########
File path: docs/ml-migration-guide.md
##########
@@ -20,15 +19,80 @@ license: |
limitations under the License.
---
-The migration guide for the current Spark version is kept on the [MLlib Guide
main page](ml-guide.html#migration-guide).
+* Table of contents
+{:toc}
-## From 2.1 to 2.2
+Note that this migration guide describes the items specific to MLlib.
+Many items of SQL migration can be applied when migrating MLlib to higher
versions for DataFrame-based APIs.
+Please refer [Migration Guide: SQL, Datasets and
DataFrame](sql-migration-guide.html).
+
+## Upgrading from MLlib 2.4 to 3.0
+
+### Breaking changes
+{:.no_toc}
Review comment:
`{:.no_toc}` is needed to exclude in the "Table of Contents". For example:
Without no_toc
With no_toc
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