From 5eb841421528323cfd7153a85234ee6ebe5d574e Mon Sep 17 00:00:00 2001
From: Martijn van Groningen <martijn.v.groningen@gmail.com>
Date: Mon, 13 Feb 2017 18:15:48 +0100
Subject: [PATCH] [ml] Specify the minimum supported version, so that we don't
 send ml metadata to older nodes.

Original commit: elastic/x-pack-elasticsearch@f196b5c461caf05d8e797629406d169c1699bff0
---
 .../org/elasticsearch/xpack/ml/job/metadata/MlMetadata.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/plugin/src/main/java/org/elasticsearch/xpack/ml/job/metadata/MlMetadata.java b/plugin/src/main/java/org/elasticsearch/xpack/ml/job/metadata/MlMetadata.java
index 06c95c99f85..e876f8d5d08 100644
--- a/plugin/src/main/java/org/elasticsearch/xpack/ml/job/metadata/MlMetadata.java
+++ b/plugin/src/main/java/org/elasticsearch/xpack/ml/job/metadata/MlMetadata.java
@@ -7,6 +7,7 @@ package org.elasticsearch.xpack.ml.job.metadata;
 
 import org.elasticsearch.ResourceAlreadyExistsException;
 import org.elasticsearch.ResourceNotFoundException;
+import org.elasticsearch.Version;
 import org.elasticsearch.cluster.AbstractDiffable;
 import org.elasticsearch.cluster.Diff;
 import org.elasticsearch.cluster.DiffableUtils;
@@ -80,6 +81,11 @@ public class MlMetadata implements MetaData.Custom {
         return datafeeds.get(datafeedId);
     }
 
+    @Override
+    public Version getMinimalSupportedVersion() {
+        return Version.V_5_4_0_UNRELEASED;
+    }
+
     @Override
     public String getWriteableName() {
         return TYPE;