From 30637f2e5f47416805649027efbe6ada5a83a1b8 Mon Sep 17 00:00:00 2001
From: niuyulin <nyl353@163.com>
Date: Wed, 11 Mar 2020 02:14:43 +0800
Subject: [PATCH] HBASE-23954 SplitParent region should not be balanced (#1264)

Co-authored-by: niuyulin <niuyulin@xiaomi.com>

Signed-off-by: Viraj Jasani <vjasani@apache.org>
Signed-off-by: Guanghao Zhang <zghao@apache.org>
Signed-off-by: stack <stack@apache.org>
---
 .../hadoop/hbase/master/assignment/RegionStates.java   | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStates.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStates.java
index 8c393650cfca..ac41bb929f9f 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStates.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStates.java
@@ -550,6 +550,9 @@ public Map<TableName, Map<ServerName, List<RegionInfo>>> getAssignmentsForBalanc
         if (isTableDisabled(tableStateManager, node.getTable())) {
           continue;
         }
+        if (node.getRegionInfo().isSplitParent()) {
+          continue;
+        }
         Map<ServerName, List<RegionInfo>> tableResult =
             result.computeIfAbsent(node.getTable(), t -> new HashMap<>());
         final ServerName serverName = node.getRegionLocation();
@@ -572,9 +575,10 @@ public Map<TableName, Map<ServerName, List<RegionInfo>>> getAssignmentsForBalanc
       for (ServerName serverName : onlineServers) {
         ServerStateNode serverNode = serverMap.get(serverName);
         if (serverNode != null) {
-          ensemble.put(serverNode.getServerName(), serverNode.getRegionInfoList().stream()
-            .filter(region -> !isTableDisabled(tableStateManager, region.getTable()))
-            .collect(Collectors.toList()));
+          ensemble.put(serverNode.getServerName(),
+            serverNode.getRegionInfoList().stream()
+                .filter(region -> !isTableDisabled(tableStateManager, region.getTable()))
+                .filter(region -> !region.isSplitParent()).collect(Collectors.toList()));
         } else {
           ensemble.put(serverName, new ArrayList<>());
         }