[Transform] add alias for backwards compatibility with 7.4 (#48049)

add alias for backwards compatibility with 7.4 relates #47943
elastic · Oct 15, 2019 · 4aa7c7b · 4aa7c7b
1 parent 620bd9d
commit 4aa7c7b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/...m/src/main/java/org/elasticsearch/xpack/transform/persistence/TransformInternalIndex.java b/...m/src/main/java/org/elasticsearch/xpack/transform/persistence/TransformInternalIndex.java
@@ -8,6 +8,7 @@
 
 import org.elasticsearch.Version;
 import org.elasticsearch.action.ActionListener;
+import org.elasticsearch.action.admin.indices.alias.Alias;
 import org.elasticsearch.action.admin.indices.template.put.PutIndexTemplateRequest;
 import org.elasticsearch.action.support.master.AcknowledgedResponse;
 import org.elasticsearch.client.Client;
@@ -343,6 +344,8 @@ public static void installLatestVersionedIndexTemplateIfRequired(ClusterService
                 .patterns(indexTemplateMetaData.patterns())
                 .version(indexTemplateMetaData.version())
                 .settings(indexTemplateMetaData.settings())
+                // BWC: for mixed clusters with nodes < 7.5, we need the alias to make new docs visible for them
+                .alias(new Alias(".data-frame-internal-3"))
                 .mapping(SINGLE_MAPPING_NAME, XContentHelper.convertToMap(jsonMappings, true, XContentType.JSON).v2());
             ActionListener<AcknowledgedResponse> innerListener = ActionListener.wrap(r -> listener.onResponse(null), listener::onFailure);
             executeAsyncWithOrigin(client.threadPool().getThreadContext(), TRANSFORM_ORIGIN, request,