Some multiple inserts do not work on MR engine

commit 3f7dde31aed44b5440563d3f9d8a8887beccf0be
Author: Daniel Dai <daijy@hortonworks.com>
Date:   Wed Mar 28 16:46:29 2018 -0700

    Preparing for 2.3.3 release

hive> set hive.execution.engine;
hive.execution.engine=mr

DROP TABLE IF EXISTS customer_target;
DROP TABLE IF EXISTS customer_source;

CREATE TABLE customer_target (id STRING, first_name STRING, last_name STRING, age INT); 

insert into customer_target values ('001', 'John', 'Smith', 45), ('002', 'Michael', 'Watson', 27), ('003', 'Den', 'Brown', 33);
SELECT id, first_name, last_name, age  FROM customer_target;

+------+-------------+------------+------+
|  id  | first_name  | last_name  | age  |
+------+-------------+------------+------+
| 002  | Michael     | Watson     | 27   |
| 001  | John        | Smith      | 45   |
| 003  | Den         | Brown      | 33   |
+------+-------------+------------+------+

CREATE TABLE customer_source (id STRING, first_name STRING, last_name STRING, age INT);

insert into customer_source values ('001', 'Dorothi', 'Hogward', 77), ('007', 'Alex', 'Bowee', 1), ('088', 'Robert', 'Dowson', 25);
SELECT id, first_name, last_name, age  FROM customer_source;

+------+-------------+------------+------+
|  id  | first_name  | last_name  | age  |
+------+-------------+------------+------+
| 088  | Robert      | Dowson     | 25   |
| 001  | Dorothi     | Hogward    | 77   |
| 007  | Alex        | Bowee      | 1    |
+------+-------------+------------+------+

FROM
  `default`.`customer_target` `trg`
  RIGHT OUTER JOIN
  `default`.`customer_source` `src`
  ON `src`.`id` = `trg`.`id`
INSERT INTO `default`.`customer_target`    -- update clause
 select  `trg`.`id`, `src`.`first_name`, `src`.`last_name`, `trg`.`age`
   WHERE `src`.`id` = `trg`.`id`
 sort by `trg`.id 
INSERT INTO `default`.`customer_target`    -- insert clause
  select `src`.`id`, `src`.`first_name`, `src`.`last_name`, `src`.`age`
   WHERE `trg`.`id` IS NULL   

2018-04-25T05:31:50,407 ERROR [e502bb46-e832-4156-860f-aba875bbb10b main] ql.Driver: FAILED: SemanticException [Error 10087]: The same output cannot be present multiple times:  customer_target
org.apache.hadoop.hive.ql.parse.SemanticException: The same output cannot be present multiple times:  customer_target
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genFileSinkPlan(SemanticAnalyzer.java:6899)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPostGroupByBodyPlan(SemanticAnalyzer.java:9772)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:9644)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:10549)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:10427)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genOPTree(SemanticAnalyzer.java:11125)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.genOPTree(CalcitePlanner.java:481)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:11138)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:286)
        at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:258)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:512)
        at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1317)
        at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1457)
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1237)
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1227)
        at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:233)
        at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:184)
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403)
        at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:821)
        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759)
        at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:136)