private TableDescriptor createBasic3FamilyHTD(final TableName tableName) {
    TableDescriptorBuilder builder = TableDescriptorBuilder.newBuilder(tableName);
    builder.setColumnFamily(ColumnFamilyDescriptorBuilder.of(Bytes.toBytes("a")));
    builder.setColumnFamily(ColumnFamilyDescriptorBuilder.of(Bytes.toBytes("b")));
    builder.setColumnFamily(ColumnFamilyDescriptorBuilder.of(Bytes.toBytes("c")));
    return builder.build();
  }
Run the split. Verify only single split file made.
@return The single split file made
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/AbstractTestWALReplay.java