hbase-9096: Disable split during log replay

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1510105 13f79535-47bb-0310-9956-ffa450edef68

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java

@@ -5194,6 +5194,12 @@ public class HRegion implements HeapSize { // , Writable{
       return null;
     }
 
+    // Can't split region which is in recovering state
+    if (this.isRecovering()) {
+      LOG.info("Cannot split region " + this.getRegionInfo().getEncodedName() + " in recovery.");
+      return null;
+    }
+
     if (!splitPolicy.shouldSplit()) {
       return null;
     }