Prep 0.9.0 release (#403)

Author: elvaliuliuliu

README.md

@@ -39,7 +39,7 @@
     <tbody align="center">
         <tr>
             <td >2.3.*</td>
-            <td rowspan=6><a href="https://github.com/dotnet/spark/releases/tag/v0.8.0">v0.8.0</a></td>
+            <td rowspan=6><a href="https://github.com/dotnet/spark/releases/tag/v0.9.0">v0.9.0</a></td>
         </tr>
         <tr>
             <td>2.4.0</td>

benchmark/scala/pom.xml

@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.microsoft.spark</groupId>
   <artifactId>microsoft-spark-benchmark</artifactId>
-  <version>0.8.0</version>
+  <version>0.9.0</version>
   <inceptionYear>2019</inceptionYear>
   <properties>
     <encoding>UTF-8</encoding>

docs/release-notes/0.9/release-0.9.md

@@ -0,0 +1,51 @@
+# .NET for Apache Spark 0.9 Release Notes
+
+### New Features and Improvements
+
+* Expose `DataStreamWriter.Foreach` API ([#387](https://github.com/dotnet/spark/pull/387))
+* Support UDF that returns `Row` object ([#376](https://github.com/dotnet/spark/pull/376), [#406](https://github.com/dotnet/spark/pull/406), [#411](https://github.com/dotnet/spark/pull/411))
+* Support for Bucketizer ([#378](https://github.com/dotnet/spark/pull/378))
+* Support `DateType` ([#420](https://github.com/dotnet/spark/pull/420))
+
+### Breaking Changes
+
+* The prior versions (<0.9) of `Microsoft.Spark.Worker` **are not compatible** with this release due to the internal changes related to UDFs.
+
+### Supported Spark Versions
+
+The following table outlines the supported Spark versions along with the microsoft-spark JAR to use with:
+
+<table>
+    <thead>
+        <tr>
+            <th>Spark Version</th>
+            <th>microsoft-spark JAR</th>
+        </tr>
+    </thead>
+    <tbody align="center">
+        <tr>
+            <td>2.3.*</td>
+            <td>microsoft-spark-2.3.x-0.9.0.jar</td>
+        </tr>
+        <tr>
+            <td>2.4.0</td>
+            <td rowspan=5>microsoft-spark-2.4.x-0.9.0.jar</td>
+        </tr>
+        <tr>
+            <td>2.4.1</td>
+        </tr>
+        <tr>
+            <td>2.4.3</td>
+        </tr>
+        <tr>
+            <td>2.4.4</td>
+        </tr>
+        <tr>
+            <td>2.4.5</td>
+        </tr>
+        <tr>
+            <td>2.4.2</td>
+            <td><a href="https://github.com/dotnet/spark/issues/60">Not supported</a></td>
+        </tr>
+    </tbody>
+</table>

eng/Versions.props

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <VersionPrefix>0.8.0</VersionPrefix>
+    <VersionPrefix>0.9.0</VersionPrefix>
     <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
     <RestoreSources>
       $(RestoreSources);

src/scala/pom.xml

@@ -7,7 +7,7 @@
   <version>${microsoft-spark.version}</version>
   <properties>
     <encoding>UTF-8</encoding>
-    <microsoft-spark.version>0.8.0</microsoft-spark.version>
+    <microsoft-spark.version>0.9.0</microsoft-spark.version>
   </properties>
 
   <modules>