private String replaceAll(String input, final String pattern, final String replace) {
    while (true) {
      String replaced = input.replaceAll(pattern, replace);
      if (replaced.equals(input)) {
        return replaced;
      }
      input = replaced;
    }
  }
Convert a pattern containing JDBC catalog search wildcards into
Java regex patterns.

@param pattern input which may contain '%' or '_' wildcard characters, or
these characters escaped using {@link #getSearchStringEscape()}.
@return replace %/_ with regex search characters, also handle escaped
characters.

The datanucleus module expects the wildchar as '*'. The columns search on the
other hand is done locally inside the hive code and that requires the regex wildchar
format '.*'  This is driven by the datanucleusFormat flag.
service/src/java/org/apache/hive/service/cli/operation/MetadataOperation.java