private Path createRecoveredEditsPathForRegion() throws IOException {
    byte[] encoded = RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedNameAsBytes();
    Path p = WALSplitUtil.getRegionSplitEditsPath(TableName.META_TABLE_NAME, encoded, 1,
      FILENAME_BEING_SPLIT, TMPDIRNAME, conf);
    return p;
  }
Test old recovered edits file doesn't break WALSplitter. This is useful in upgrading old
instances.
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALSplit.java