DATAES-826 - Repositories should not try to create an index when it already exists.

original PR: spring-projects#456

Author: sothawo

src/main/java/org/springframework/data/elasticsearch/repository/support/AbstractElasticsearchRepository.java

@@ -88,7 +88,7 @@ public AbstractElasticsearchRepository(ElasticsearchEntityInformation<T, ID> met
 		this.entityClass = this.entityInformation.getJavaType();
 		this.indexOperations = operations.indexOps(this.entityClass);
 		try {
-			if (createIndexAndMapping()) {
+			if (createIndexAndMapping() && !indexOperations.exists()) {
 				createIndex();
 				putMapping();
 			}