@Override
    public boolean accept(Path path) {
      return ORIGINAL_PATTERN.matcher(path.getName()).matches() ||
        ORIGINAL_PATTERN_COPY.matcher(path.getName()).matches();
    }
A write into a non-aicd table produces files like 0000_0 or 0000_0_copy_1
(Unless via Load Data statement)
ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java