spark-instrumented-optimizer/python/docs/source/migration_guide/index.rst
HyukjinKwon aa388cf3d0 [SPARK-34041][PYTHON][DOCS] Miscellaneous cleanup for new PySpark documentation
### What changes were proposed in this pull request?

This PR proposes to:
- Add a link of quick start in PySpark docs into "Programming Guides" in Spark main docs
- `ML` / `MLlib` -> `MLlib (DataFrame-based)` / `MLlib (RDD-based)` in API reference page
- Mention other user guides as well because the guide such as [ML](http://spark.apache.org/docs/latest/ml-guide.html) and [SQL](http://spark.apache.org/docs/latest/sql-programming-guide.html).
- Mention other migration guides as well because PySpark can get affected by it.

### Why are the changes needed?

For better documentation.

### Does this PR introduce _any_ user-facing change?

It fixes user-facing docs. However, it's not released out yet.

### How was this patch tested?

Manually tested by running:

```bash
cd docs
SKIP_SCALADOC=1 SKIP_RDOC=1 SKIP_SQLDOC=1 jekyll serve --watch
```

Closes #31082 from HyukjinKwon/SPARK-34041.

Authored-by: HyukjinKwon <gurwls223@apache.org>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
2021-01-08 09:28:31 +09:00

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===============
Migration Guide
===============
This page describes the migration guide specific to PySpark.
.. toctree::
:maxdepth: 2
pyspark_2.4_to_3.0
pyspark_2.3_to_2.4
pyspark_2.3.0_to_2.3.1_above
pyspark_2.2_to_2.3
pyspark_1.4_to_1.5
pyspark_1.0_1.2_to_1.3
Many items of other migration guides can also be applied when migrating PySpark to higher versions because PySpark internally shares other components.
Please also refer other migration guides:
- `Migration Guide: Spark Core <http://spark.apache.org/docs/latest/core-migration-guide.html>`_
- `Migration Guide: SQL, Datasets and DataFrame <http://spark.apache.org/docs/latest/sql-migration-guide.html>`_
- `Migration Guide: Structured Streaming <http://spark.apache.org/docs/latest/ss-migration-guide.html>`_
- `Migration Guide: MLlib (Machine Learning) <http://spark.apache.org/docs/latest/ml-migration-guide.html>`_