private void silentCommitTxn(CommitTxnRequest commitTxnRequest) {
    try {
      txnHandler.commitTxn(commitTxnRequest);
    } catch (Exception ex) {
      throw new RuntimeException(ex);
    }
  }
Tests to check the ACID properties and isolation level requirements.
ql/src/test/org/apache/hadoop/hive/ql/lockmgr/TestDbTxnManagerIsolationProperties.java