private void internify(WAL.Entry entry) {
      WALKeyImpl k = entry.getKey();
      k.internTableName(this.tableName);
      k.internEncodedRegionName(this.encodedRegionName);
    }
A buffer of some number of edits for a given region. This accumulates edits and also provides a
memory optimization in order to share a single byte array instance for the table and region
name. Also tracks memory usage of the accumulated edits.
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/EntryBuffers.java