private void verifyReplication(TableName tableName, int regionReplication, final int startRow,
    final int endRow) throws Exception {
    verifyReplication(tableName, regionReplication, startRow, endRow, true);
  }
Tests region replication by setting up region replicas and verifying async wal replication
replays the edits to the secondary region in various scenarios.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRegionReplicaReplication.java