reduce insertion warnings

[afeld]

0: jdbc:hive2://> INSERT INTO people (name) VALUES ('Aidan');
19/02/18 09:45:04 [HiveServer2-Background-Pool: Thread-50]: WARN ql.Driver: Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
...
In order to change the average load for a reducer (in bytes):
  set hive.exec.reducers.bytes.per.reducer=<number>
In order to limit the maximum number of reducers:
  set hive.exec.reducers.max=<number>
In order to set a constant number of reducers:
  set mapreduce.job.reduces=<number>
19/02/18 09:45:05 [HiveServer2-Background-Pool: Thread-50]: WARN impl.MetricsSystemImpl: JobTracker metrics system already initialized!
19/02/18 09:45:05 [HiveServer2-Background-Pool: Thread-50]: WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
Job running in-process (local Hadoop)
WARN  : Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
19/02/18 09:45:05 [LocalJobRunner Map Task Executor #0]: WARN objectinspector.StandardStructObjectInspector: Trying to access 6 fields inside a list of 7 elements: [String, 5, 5, 1, 0, 48 4c 4c a0 01 01 c3 dd b1 35, null]
19/02/18 09:45:05 [LocalJobRunner Map Task Executor #0]: WARN objectinspector.StandardStructObjectInspector: ignoring similar errors.
19/02/18 09:45:06 [pool-12-thread-1]: WARN impl.MetricsSystemImpl: JobTracker metrics system already initialized!
...
OK
No rows affected (5.168 seconds)