Help Center/ DataArts Studio/ More Documents/ User Guide (Kuala Lumpur Region)/ User Guide/ DataArts Migration/ Managing Jobs/ Destination Job Parameters/ To HBase/CloudTable
Updated on 2022-08-17 GMT+08:00
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To HBase/CloudTable

If the destination link of a job is one of them listed in Link to HBase or Link to CloudTable, configure the destination job parameters based on Table 1.

Table 1 Parameter description

Parameter

Description

Example Value

Table Name

Name of the HBase table to which data will be written. If you want to create an HBase table, you can copy the field names from the migration source. Click the icon next to the text box. The dialog box for selecting the table is displayed.

This parameter can be configured as a macro variable of date and time and a path name can contain multiple macro variables. When the macro variable of date and time works with a scheduled job, the incremental data can be synchronized periodically.

TBL_2

Clear Data Before Import
Whether the data in the destination table is cleared before data import. The options are as follows:
  • Yes: The data is cleared.
  • No: The data is not cleared. Instead, it will be added to the existing table.

Yes

Rowkey Delimiter

(Optional) Used to combine multiple columns as a rowkey. Spaces are used by default.

,

Rowkey Data Redundancy

(Optional) Whether to write the rowkey data into HBase columns. The default value is No.

No

Compression Format
(Optional) Compression format used in creating an HBase table. The default value is None.
  • None: The files are not compressed.
  • Snappy: The files are compressed in snappy format.
  • gzip: The files are compressed in gzip format.

None

Write WAL

Whether to enable Write Ahead Log (WAL) of HBase. The options are as follows:

  • Yes: If the HBase server breaks down after the function is enabled, you can replay the operations that have not been performed in WAL.
  • No: If you set this parameter to No, the write performance is improved. However, if the HBase server breaks down, data may be lost.

No

Match Data Type
  • Yes: Data of the Short, Int, Long, Float, Double, and Decimal columns in the source database is converted into Byte[] arrays (binary) and written into HBase. Other types of data are written as character strings. If several types of data mentioned above are combined as rowkeys, they will be written as character strings.

    This function saves storage space. In specific scenarios, the rowkey distribution is evener.

  • No: All types of data in the source database are written into HBase as character strings.

No