Parallel Data Import

raise_errors_if_no_files

Parameter description: Specifies whether to distinguish between the problems "the number of imported file records is empty" and "the imported file does not exist". If this parameter is set to TRUE and the problem "the imported file does not exist" occurs, GaussDB will report the error message "file does not exist".

This parameter is a SUSET parameter. Set it based on instructions provided in Table 1.

Value range: Boolean

• on indicates that the messages of "the number of imported file records is empty" and "the imported file does not exist" are distinguished when files are imported.
• off indicates that the messages of "the number of imported file records is empty" and "the imported file does not exist" are the same when files are imported.

Default value: off

gds_debug_mod

Parameter description: Specifies whether to enable the debug function of Gauss Data Service (GDS). This parameter is used to better locate and analyze GDS faults. After the debug function is enabled, types of packets received or sent by GDS, peer end of GDS during command interaction, and other interaction information about GDS are written into the logs of corresponding nodes in the cluster. In this way, the state switching on the GaussDB state machine and the current state are recorded. If this function is enabled, additional log I/O resources will be consumed, affecting log performance and validity. You are advised to enable this function only when locating GDS faults.

This parameter is a USERSET parameter. Set it based on instructions provided in Table 1.

Value range:

• on indicates that the GDS debug function is enabled.
• off indicates that the GDS debug function is disabled.

Default value: off

safe_data_path

Parameter description: Specifies the path prefix restriction except for the initial user. Currently, the path prefix restriction applies to the COPY operation and advanced packages.

This parameter is a SIGHUP parameter. Set it based on instructions provided in Table 1.

Value range: a string of up to 4,096 characters

Default value: NULL

• If a soft link file exists in the safe_data_path directory, the system processes the file based on the actual file path to which the soft link points. If the actual path is not in the safe_data_path directory, an error is reported.
• If a hard link file exists in the safe_data_path directory, it can be used properly. For security purposes, exercise caution when using hard link files. Do not create hard link files that point to other directories in the safe_data_path directory. Ensure that the permission on the safe_data_path directory is minimized.

enable_copy_server_files

Parameter description: Specifies whether to enable the permission to copy server files.

This parameter is a SIGHUP parameter. Set it based on instructions provided in Table 1.

Value range: Boolean

• on indicates that the permission to copy server files is enabled.
• off indicates that the permission to copy server files is disabled.

Default value: off

When the enable_copy_server_files parameter is disabled, only the initial user is allowed to run the COPY FROM FILENAME or COPY TO FILENAME statement. When the enable_copy_server_files parameter is enabled, users with the SYSADMIN permission or users who inherit the gs_role_copy_files permission of the built-in role are allowed to run the COPY FROM FILENAME or COPY TO FILENAME statement.