From a6fa96d51397edf0ce7f1f5c8b853452c641dc22 Mon Sep 17 00:00:00 2001
From: Simon Willnauer <simonw@apache.org>
Date: Thu, 6 Oct 2016 20:41:19 +0200
Subject: [PATCH] Remove confusing capturing groups in _rollover index name
 pattern

---
 .../admin/indices/rollover/TransportRolloverAction.java       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/src/main/java/org/elasticsearch/action/admin/indices/rollover/TransportRolloverAction.java b/core/src/main/java/org/elasticsearch/action/admin/indices/rollover/TransportRolloverAction.java
index aeb2fe78dfe..de88801825a 100644
--- a/core/src/main/java/org/elasticsearch/action/admin/indices/rollover/TransportRolloverAction.java
+++ b/core/src/main/java/org/elasticsearch/action/admin/indices/rollover/TransportRolloverAction.java
@@ -61,7 +61,7 @@ import static java.util.Collections.unmodifiableList;
  */
 public class TransportRolloverAction extends TransportMasterNodeAction<RolloverRequest, RolloverResponse> {
 
-    private static final Pattern INDEX_NAME_PATTERN = Pattern.compile("^.*-(\\d)+$");
+    private static final Pattern INDEX_NAME_PATTERN = Pattern.compile("^.*-\\d+$");
     private final MetaDataCreateIndexService createIndexService;
     private final MetaDataIndexAliasesService indexAliasesService;
     private final ActiveShardsObserver activeShardsObserver;
@@ -186,7 +186,7 @@ public class TransportRolloverAction extends TransportMasterNodeAction<RolloverR
                 + (isDateMath ? ">" : "");
             return newName;
         } else {
-            throw new IllegalArgumentException("index name [" + sourceIndexName + "] does not match pattern '^.*-(\\d)+$'");
+            throw new IllegalArgumentException("index name [" + sourceIndexName + "] does not match pattern '^.*-\\d+$'");
         }
     }