Usage notes

• UPLOAD: uploads local data to a MaxCompute table. You can upload files or level-1 directories to only one table or partition in a table each time. For a partitioned table, you must specify the partition to which you want to upload data. For a multi-level partitioned table, you must specify a lowest-level partition. For more information, see Upload.
• DOWNLOAD: downloads MaxCompute table data or the query results of a specific instance to a local directory. You can download data from only one table or partition to a single local file each time. For a partitioned table, you must specify the partition from which you want to download data. For a multi-level partitioned table, you must specify a lowest-level partition. For more information, see Download.
• RESUME: resumes the transfer of files or directories when your network is disconnected or the Tunnel service is faulty. You cannot use this command to resume data downloads. For more information, see Resume.
• SHOW: displays historical task information. For more information, see Show.
• PURGE: clears the session directory. Logs from the last three days are deleted by default. For more information, see Purge.
• HELP: queries help information. Command aliases are supported.

shopx,x_id,100
shopy,y_id,200
shopz,z_id

1. On the MaxCompute client, execute the following statements to create a partitioned table named sale_detail and add partitions to the table.

   CREATE TABLE IF NOT EXISTS sale_detail(
         shop_name     STRING,
         customer_id   STRING,
         total_price   DOUBLE)
   PARTITIONED BY (sale_date STRING,region STRING);
   
   alter table sale_detail add partition (sale_date='201312', region='hangzhou');

2. Run the UPLOAD command to upload the data.txt file to the partitioned table sale_detail.
   • Sample statement

     tunnel upload d:\data.txt sale_detail/sale_date=201312,region=hangzhou -s false

   • Returned result

     Upload session: 20150610xxxxxxxxxxx70a002ec60c
     Start upload:d:\data.txt
     Total bytes:41   Split input to 1 blocks
     2015-06-10 16:39:22     upload block: '1'
     ERROR: column mismatch -,expected 3 columns, 2 columns found, please check data or delimiter

     Note The data fails to be imported because the data.txt file contains dirty data. The system returns the session ID and an error message.
3. Execute the following statement to verify the data upload.
   • Sample statement

     select * from sale_detail where sale_date='201312';

   • Returned result

     ID = 20150610xxxxxxxxxxxvc61z5
     +-----------+-------------+-------------+-----------+--------+
     | shop_name | customer_id | total_price | sale_date | region |
     +-----------+-------------+-------------+-----------+--------+
     +-----------+-------------+-------------+-----------+--------+

     Note The data fails to be imported because the data.txt file contains dirty data. As a result, the table is empty.
4. Run the SHOW command to query the ID of the failed session.
   • Sample statement

     tunnel show history;

   • Returned result

     20150610xxxxxxxxxxx70a002ec60c  failed  'u --config-file /D:/console/conf/odps_config.ini --project odpstest_ay52c_ay52 --endpoint http://service.cn-shanghai.maxcompute.aliyun.com/api --id UlxxxxxxxxxxxrI1 --key 2m4r3WvTxxxxxxxxxx0InVke7UkvR d:\data.txt sale_detail/sale_date=201312,region=hangzhou -s false'

5. Modify the content in the data.txt file to the following information:

   shopx,x_id,100
   shopy,y_id,200

6. Run the RESUME command to resume the data upload. 20150610xxxxxxxxxxx70a002ec60c is the ID of the failed session.
   • Sample statement

     tunnel resume 20150610xxxxxxxxxxx70a002ec60c --force;

   • Returned result

     start resume
     20150610xxxxxxxxxxx70a002ec60c
     Upload session: 20150610xxxxxxxxxxx70a002ec60c
     Start upload:d:\data.txt
     Resume 1 blocks 
     2015-06-10 16:46:42     upload block: '1'
     2015-06-10 16:46:42     upload block complete, blockid=1
     upload complete, average speed is 0 KB/s
     OK

7. Execute the following statement to verify the data upload:
   • Sample statement

     select * from sale_detail where sale_date='201312';

   • Returned result

     ID = 20150610xxxxxxxxxxxa741z5
      +-----------+-------------+-------------+-----------+--------+
      | shop_name | customer_id | total_price | sale_date | region |
      +-----------+-------------+-------------+-----------+--------+
      | shopx     | x_id        | 100.0       | 201312    | hangzhou|
      | shopy     | y_id        | 200.0       | 201312    | hangzhou|
      +-----------+-------------+-------------+-----------+--------+

8. Run the DOWNLOAD command to download data from the sale_detail table to the result.txt file.

   tunnel download sale_detail/sale_date=201312,region=hangzhou result.txt;

9. Check whether the result.txt file contains the following content. If the file contains the following content, the data download succeeds.

   shopx,x_id,100.0
   shopy,y_id,200.0