code: public void commit(DBTransaction dbTran) {
          // For extreme logging
          if (m_logger.isTraceEnabled()) {
              dbTran.traceMutations(m_logger);
          }
          try {
              long timestamp = Utils.getTimeMicros();
              commitMutations(dbTran, timestamp);
              commitDeletes(dbTran, timestamp);
          } finally {
              dbTran.clear();
          }
      }
docs: Commit the updates in the given {@link DBTransaction}. The updates are cleared even
  if all commit retries fail.
  
  @param dbTran {@link DBTransaction} with transactions ready to commit.