HadoopSecureHiveWrapper - CliSessionState - connection should be closed

[kardoo]

Hive session is not being closed. This is not a problem when using mapreduce.
When using tez, AM sessions keep running until tez timeout expires.

I suggest to change HadoopSecureHiveWrapper.java :

	int returnCode = 0;
	try {
		returnCode = cli.processFile(hiveScript);
	} catch (Exception ex) {
		logger.error("Error processing file: ", ex);
	} finally {
		logger.info("Closing session state.");
		if (ss != null) ss.close();
	}
	if (returnCode != 0) {
		logger.warn("Got exception " + returnCode + " from line: " + hiveScript);
		throw new HiveQueryExecutionException(returnCode, hiveScript);
	}

[kardoo]

I opened a Pull Request:

• Tez session not being closed Tez session not being closed #256