Set version to 5.0.0-alpha3 (#18550)

* Set version to 5.0.0-alpha3

* Updated version in qa/backwards tests too

buildSrc/version.properties

@@ -1,4 +1,4 @@
-elasticsearch     = 5.0.0
+elasticsearch     = 5.0.0-alpha3
 lucene            = 6.0.0
 
 # optional dependencies

core/src/main/java/org/elasticsearch/Version.java

@@ -75,9 +75,9 @@ public class Version {
     public static final Version V_5_0_0_alpha1 = new Version(V_5_0_0_alpha1_ID, org.apache.lucene.util.Version.LUCENE_6_0_0);
     public static final int V_5_0_0_alpha2_ID = 5000002;
     public static final Version V_5_0_0_alpha2 = new Version(V_5_0_0_alpha2_ID, org.apache.lucene.util.Version.LUCENE_6_0_0);
-    public static final int V_5_0_0_ID = 5000099;
-    public static final Version V_5_0_0 = new Version(V_5_0_0_ID, org.apache.lucene.util.Version.LUCENE_6_0_0);
-    public static final Version CURRENT = V_5_0_0;
+    public static final int V_5_0_0_alpha3_ID = 5000003;
+    public static final Version V_5_0_0_alpha3 = new Version(V_5_0_0_alpha3_ID, org.apache.lucene.util.Version.LUCENE_6_0_0);
+    public static final Version CURRENT = V_5_0_0_alpha3;
 
     static {
         assert CURRENT.luceneVersion.equals(org.apache.lucene.util.Version.LATEST) : "Version must be upgraded to ["
@@ -90,8 +90,8 @@ public class Version {
 
     public static Version fromId(int id) {
         switch (id) {
-            case V_5_0_0_ID:
-                return V_5_0_0;
+            case V_5_0_0_alpha3_ID:
+                return V_5_0_0_alpha3;
             case V_5_0_0_alpha2_ID:
                 return V_5_0_0_alpha2;
             case V_5_0_0_alpha1_ID:

core/src/main/java/org/elasticsearch/index/mapper/internal/IndexFieldMapper.java

@@ -85,7 +85,7 @@ public class IndexFieldMapper extends MetadataFieldMapper {
     public static class TypeParser implements MetadataFieldMapper.TypeParser {
         @Override
         public MetadataFieldMapper.Builder<?,?> parse(String name, Map<String, Object> node, ParserContext parserContext) throws MapperParsingException {
-            if (parserContext.indexVersionCreated().onOrAfter(Version.V_5_0_0)) {
+            if (parserContext.indexVersionCreated().onOrAfter(Version.V_5_0_0_alpha3)) {
                 throw new MapperParsingException(NAME + " is not configurable");
             }
             return new Builder(parserContext.mapperService().fullName(NAME));

qa/backwards-5.0/build.gradle

@@ -18,6 +18,6 @@ integTest {
   cluster {
     numNodes = 2
     numBwcNodes = 1
-    bwcVersion = "5.0.0-SNAPSHOT" // this is the same as the current version until we released the first RC
+    bwcVersion = "5.0.0-alpha3-SNAPSHOT" // this is the same as the current version until we released the first RC
   }
 }