hive表导入数据：FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask

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在进行拉链表练习的时候，练习代码如下：
数据

2019-08-21订单数据表(order)
1,2019-08-18,2019-08-18,创建
2,2019-08-18,2019-08-18,创建
3,2019-08-19,2019-08-21,支付
4,2019-08-19,2019-08-21,完成
5,2019-08-19,2019-08-20,支付
6,2019-08-20,2019-08-20,创建
7,2019-08-20,2019-08-21,支付
8,2019-08-21,2019-08-21,创建

2019-08-22订单数据表(order)
*1,2019-08-18,2019-08-22,支付
*2,2019-08-18,2019-08-22,完成
3,2019-08-19,2019-08-21,支付
4,2019-08-19,2019-08-21,完成
5,2019-08-19,2019-08-20,支付
*6,2019-08-20,2019-08-22,支付
7,2019-08-20,2019-08-21,支付
*8,2019-08-21,2019-08-22,支付
*9,2019-08-22,2019-08-22,创建
*10,2019-08-22,2019-08-22,支付


2019-08-23订单数据表
1,2019-08-18,2019-08-23,完成
2,2019-08-18,2019-08-22,完成
3,2019-08-19,2019-08-23,完成
4,2019-08-19,2019-08-21,完成
5,2019-08-19,2019-08-23,完成
6,2019-08-20,2019-08-22,支付
7,2019-08-20,2019-08-21,支付
8,2019-08-21,2019-08-23,完成
9,2019-08-22,2019-08-22,创建
10,2019-08-22,2019-08-22,支付
11,2019-08-23,2019-08-23,创建
12,2019-08-23,2019-08-23,创建
13,2019-08-23,2019-08-23,支付

建表

CREATE TABLE orders_20190821 (
orderid INT,
createtime STRING,
modifiedtime STRING,
status STRING
)
ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
stored AS textfile;

CREATE TABLE orders_20190822 (
orderid INT,
createtime STRING,
modifiedtime STRING,
status STRING
)
ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
stored AS textfile;

CREATE TABLE orders_20190823 (
orderid INT,
createtime STRING,
modifiedtime STRING,
status STRING
)
ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
stored AS textfile;

数据导入：
load data local inpath '/root/hive/order_2019-08-21.txt' into table orders_20190821;
load data local inpath '/root/hive/order_2019-08-22.txt' into table orders_20190822;
load data local inpath '/root/hive/order_2019-08-23.txt' into table orders_20190823;

ODS层设计：

在数据仓库的ODS层，有一张订单的增量数据表，按天分区，存放每天的增量数据：

CREATE TABLE ods_orders_inc (
orderid INT,
createtime STRING,
modifiedtime STRING,
status STRING
)PARTITIONED BY (day STRING)
ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
stored AS textfile;

DW层设计：

在数据仓库的DW层，有一张订单的历史数据拉链表，存放订单的历史状态数据：

CREATE TABLE dw_orders_his (
orderid INT,
createtime STRING,
modifiedtime STRING,
status STRING,
dw_start_date STRING,
dw_end_date STRING
) 
ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
stored AS textfile;

第一步，抽取全量数据到ODS：

INSERT overwrite TABLE ods_orders_inc PARTITION (day = '2019-08-20')
SELECT orderid,createtime,modifiedtime,status
FROM orders_20190821
WHERE createtime <= '2019-08-20';

第二步，从ODS刷新到DW：

INSERT overwrite TABLE dw_orders_his
SELECT orderid,createtime,modifiedtime,status,
createtime AS dw_start_date,
'9999-12-31' AS dw_end_date
FROM ods_orders_inc
WHERE day = '2019-08-20';

增量数据导入
从2019-08-22开始，需要每天正常刷新前一天（2019-08-21）的增量数据到历史表。

第一步，通过增量抽取，将2019-08-21的数据抽取到ODS：

INSERT overwrite TABLE ods_orders_inc PARTITION (day = '2019-08-21')
SELECT orderid,createtime,modifiedtime,status
FROM orders_20190821
WHERE modifiedtime = '2019-08-21' or createtime = '2019-08-21';

第二步，通过DW历史数据(数据日期为2019-08-20)，和ODS增量数据(2019-08-21)，刷新历史表：
先把数据放到一张临时表中：临时存储，防止出错有地方追溯。

DROP TABLE IF EXISTS dw_orders_his_tmp;
CREATE TABLE dw_orders_his_tmp AS 
SELECT orderid,
createtime,
modifiedtime,
status,
dw_start_date,
dw_end_date 
FROM (
    SELECT a.orderid,
    a.createtime,
    a.modifiedtime,
    a.status,
    a.dw_start_date,
    CASE WHEN b.orderid IS NOT NULL AND a.dw_end_date > '2019-08-21' THEN '2019-08-20' ELSE a.dw_end_date END AS dw_end_date 
    FROM dw_orders_his a 
    left outer join (SELECT * FROM ods_orders_inc WHERE day = '2019-08-21') b 
    ON (a.orderid = b.orderid) 
    UNION ALL 
    SELECT orderid,
    createtime,
    modifiedtime,
    status,
    modifiedtime AS dw_start_date,
    '9999-12-31' AS dw_end_date 
    FROM ods_orders_inc 
    WHERE day = '2019-08-21' 
) x 
ORDER BY orderid,dw_start_date;

最后overwrite到dw历史表：

INSERT overwrite TABLE dw_orders_his
SELECT * FROM dw_orders_his_tmp;

解决办法
修改yarn-site.xml中的yarn.nodemanager.resource.memory-mb值大小(2G->4G)
原先设置

      yarn.nodemanager.resource.memory-mb
      2048

修改后设置

      yarn.nodemanager.resource.memory-mb
      4096

hive 1.x版本 不支持 not in +子查询（SubQuery）

借鉴：https://www.jianshu.com/p/c6543b65cb77

深入了解：https://blog.csdn.net/qq_26442553/article/details/80143559