sqoop 測試 --hive-delims-replacement 參數

在hive的官方文檔中給的例子中字段分隔符是\001,但是在他的API文檔中--hive-delims-replacement ，--hive-drop-import-delims   參數中會處理的字符是\0x01,一個時8進制的1，一個是16進制的1，有這么一點差別，lz為了確認這兩個是否一樣故做了下面的實驗

 

Example:

CREATE TABLE page_view(viewTime INT, userid BIGINT,

      page_url STRING, referrer_url STRING,

      ip STRING COMMENT  'IP Address of the User' )

  COMMENT  'This is the page view table'

  PARTITIONED BY(dt STRING, country STRING)

  ROW FORMAT DELIMITED

    FIELDS TERMINATED BY  '\001'

STORED AS SEQUENCEFILE;

The above statement lets you create the same table as the previous table.

In the previous examples the data is stored in <hive.metastore.warehouse.dir>/page_view. Specify a value for the key hive.metastore.warehouse.dir in the Hive config file hive-site.xml.

--hive-delims-replacement <arg>             Replace Hive record \0x01

                                               and row delimiters (\n\r)

                                               from imported string fields

                                               with user-defined string

--hive-drop-import-delims                   Drop Hive record \0x01 and

                                               row delimiters (\n\r) from

                                               imported string fields

這兩個參數不能一起用

元數據（中間的方格是\001,用java代碼生成的）

11 QQ
jyyh qwqwqw 1 1111 2017/10/15 23:27:48
15 java
jyyh 中文 2 1212 2017/10/15 23:39:57

sqoop import --connect jdbc:oracle:thin:@MSI:1521/study --username luo --password Sys_20170929 --table TB_NEWS --fields-terminated-by "\001" --lines-terminated-by "\n" --hive-import --hive-overwrite --null-string "" --null-non-string "" --fetch-size 1000 -m 3 --create-hive-table  --hive-table luoqi_test.TB_NEWS --delete-target-dir 

導入之后hive的結構是

11.0 QQ|jyyh qwqwqw 1 1111 2017-10-15 23:27:48.0
15.0 java|jyyh 中文 2 1212 2017-10-15 23:39:57.0

結果，'\001'被替換成正確的字符

結論，\001可以被--hive-delims-replacement 參數替換

 

導出將這個符號還原？