public String __getCompression() {
    Object o = attrs.get(COMPRESSION);
    return o != null ? o.toString() : ColumnFamilyDescriptorBuilder.DEFAULT_COMPRESSION.name();
  }
Returns the value of the COMPRESSION attribute or its default if unset
hbase-rest/src/main/java/org/apache/hadoop/hbase/rest/model/ColumnSchemaModel.java