2019/2/28 星期四

cdh中hive創(chuàng)建表出現(xiàn)中文亂碼問題

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0: jdbc:hive2://192.168.0.141:10000> create table movie(
. . . . . . . . . . . . . . . . . .> userID int comment '用戶ID',
. . . . . . . . . . . . . . . . . .> movieID int comment '電影ID',
. . . . . . . . . . . . . . . . . .> rating int comment '電影評分',
. . . . . . . . . . . . . . . . . .> timestamped bigint comment '評分時間戳',
. . . . . . . . . . . . . . . . . .> movieName string comment '電影名字', 
. . . . . . . . . . . . . . . . . .> movieType string comment '電影類型', 
. . . . . . . . . . . . . . . . . .> sex string comment '性別', 
. . . . . . . . . . . . . . . . . .> age int comment '年齡', 
. . . . . . . . . . . . . . . . . .> occupation string comment '職業(yè)', 
. . . . . . . . . . . . . . . . . .> zipcode string comment '郵政編碼'
. . . . . . . . . . . . . . . . . .> ) comment '影評三表合一' 
. . . . . . . . . . . . . . . . . .> row format delimited fields terminated by ","
. . . . . . . . . . . . . . . . . .> ;

0: jdbc:hive2://192.168.0.141:10000> desc movie;
INFO : Compiling command(queryId=hive_20190228181919_b6eb4f8a-7d17-4437-b089-750bf2e81d0f): desc movie
INFO : Semantic Analysis Completed
INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:col_name, type:string, comment:from deserializer), FieldSchema(name:data_type, type:string, comment:from deserializer), FieldSchema(name:comment, type:string, comment:from deserializer)], properties:null)
INFO : Completed compiling command(queryId=hive_20190228181919_b6eb4f8a-7d17-4437-b089-750bf2e81d0f); Time taken: 0.036 seconds
INFO : Executing command(queryId=hive_20190228181919_b6eb4f8a-7d17-4437-b089-750bf2e81d0f): desc movie
INFO : Starting task [Stage-0:DDL] in serial mode
INFO : Completed executing command(queryId=hive_20190228181919_b6eb4f8a-7d17-4437-b089-750bf2e81d0f); Time taken: 0.016 seconds
INFO : OK
+--------------+------------+----------+--+
| col_name | data_type | comment |
+--------------+------------+----------+--+
| userid | int | ??ID |
| movieid | int | ??ID |
| rating | int | ???? |
| timestamped | bigint | ????? |
| moviename | string | ???? |
| movietype | string | ???? |
| sex | string | ?? |
| age | int | ?? |
| occupation | string | ?? |
| zipcode | string | ???? |
+--------------+------------+----------+--+

進(jìn)入MySQL
[root@NewCDH-0--141 ~]# mysql -uroot -p
Enter password:
mysql> show create database hive;
+----------+---------------------------------------------------------------+
| Database | Create Database |
+----------+---------------------------------------------------------------+
| hive | CREATE DATABASE hive /!40100 DEFAULT CHARACTER SET utf8 / |
+----------+---------------------------------------------------------------+
1 row in set (0.02 sec)
直接執(zhí)行下面的命令

mysql> use hive;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

mysql>  alter table COLUMNS_V2 modify column COMMENT varchar(256) character set utf8;
Query OK, 57 rows affected (0.20 sec)
Records: 57  Duplicates: 0  Warnings: 0

mysql> alter table TABLE_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8;
Query OK, 58 rows affected (0.03 sec)
Records: 58  Duplicates: 0  Warnings: 0

mysql> alter table PARTITION_PARAMS  modify column PARAM_VALUE varchar(4000) character set utf8;
Query OK, 0 rows affected (0.03 sec)
Records: 0  Duplicates: 0  Warnings: 0

mysql> alter table PARTITION_KEYS  modify column PKEY_COMMENT varchar(4000) character set utf8;
Query OK, 0 rows affected (0.04 sec)
Records: 0  Duplicates: 0  Warnings: 0

mysql> alter table  INDEX_PARAMS  modify column PARAM_VALUE  varchar(4000) character set utf8;
Query OK, 0 rows affected (0.19 sec)
Records: 0  Duplicates: 0  Warnings: 0

然后需要重新創(chuàng)建表，之前的表還是亂碼

create table movie02(
userID int comment '用戶ID',
movieID int comment '電影ID',
rating int comment '電影評分',
timestamped bigint comment '評分時間戳',
movieName string comment '電影名字', 
movieType string comment '電影類型', 
sex string comment '性別', 
age int comment '年齡', 
occupation string comment '職業(yè)', 
zipcode string comment '郵政編碼'
) comment '影評三表合一' 
row format delimited fields terminated by ",";

0: jdbc:hive2://192.168.0.141:10000> desc movie02;
+--------------+------------+----------+--+
| col_name | data_type | comment |
+--------------+------------+----------+--+
| userid | int | 用戶ID |
| movieid | int | 電影ID |
| rating | int | 電影評分 |
| timestamped | bigint | 評分時間戳 |
| moviename | string | 電影名字 |
| movietype | string | 電影類型 |
| sex | string | 性別 |
| age | int | 年齡 |
| occupation | string | 職業(yè) |
| zipcode | string | 郵政編碼 |
+--------------+------------+----------+--+
0: jdbc:hive2://192.168.0.141:10000> show create table movie02;
+----------------------------------------------------+--+
| createtab_stmt |
+----------------------------------------------------+--+
| CREATE TABLE movie02( |
| userid int COMMENT '用戶ID', |
| movieid int COMMENT '電影ID', |
| rating int COMMENT '電影評分', |
| timestamped bigint COMMENT '評分時間戳', |
| moviename string COMMENT '電影名字', |
| movietype string COMMENT '電影類型', |
| sex string COMMENT '性別', |
| age int COMMENT '年齡', |
| occupation string COMMENT '職業(yè)', |
| zipcode string COMMENT '郵政編碼') |
| COMMENT '影評三表合一' |
| ROW FORMAT SERDE |
| 'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe' |
| WITH SERDEPROPERTIES ( |
| 'field.delim'=',', |
| 'serialization.format'=',') |
| STORED AS INPUTFORMAT |
| 'org.apache.hadoop.mapred.TextInputFormat' |
| OUTPUTFORMAT |
| 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat' |
| LOCATION |
| 'hdfs://nameservice1/user/hive/warehouse/movie02' |
| TBLPROPERTIES ( |
| 'transient_lastDdlTime'='1551350122') |
+----------------------------------------------------+--+
25 rows selected (0.167 seconds)
亂碼問題解決了。

參考鏈接
https://www.cnblogs.com/qingyunzong/p/8724155.html
cdh hive 中文注釋亂碼解決方法(簡單幾步)：https://blog.csdn.net/lingbo229/article/details/81324624