Add environment variable to skip repository initialization.

Original Pull Request #2878
Closes #2876

Author: sothawo

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

@@ -82,10 +82,12 @@ public SimpleElasticsearchRepository(ElasticsearchEntityInformation<T, ID> metad
 		this.entityClass = this.entityInformation.getJavaType();
 		this.indexOperations = operations.indexOps(this.entityClass);
 
-		if (shouldCreateIndexAndMapping() && !indexOperations.exists()) {
-			indexOperations.createWithMapping();
-		} else if (shouldAlwaysWriteMapping()) {
-			indexOperations.putMapping();
+		if (!"true".equals(System.getenv("SPRING_DATA_ELASTICSEARCH_SKIP_REPOSITORY_INIT"))) {
+			if (shouldCreateIndexAndMapping() && !indexOperations.exists()) {
+				indexOperations.createWithMapping();
+			} else if (shouldAlwaysWriteMapping()) {
+				indexOperations.putMapping();
+			}
 		}
 	}
 

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

@@ -61,7 +61,9 @@ public SimpleReactiveElasticsearchRepository(ElasticsearchEntityInformation<T, I
 		this.operations = operations;
 		this.indexOperations = operations.indexOps(entityInformation.getJavaType());
 
-		createIndexAndMappingIfNeeded();
+		if (!"true".equals(System.getenv("SPRING_DATA_ELASTICSEARCH_SKIP_REPOSITORY_INIT"))) {
+			createIndexAndMappingIfNeeded();
+		}
 	}
 
 	private void createIndexAndMappingIfNeeded() {