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Plugin command to move streaming data from stdin to the remote storage system.
plugin_executable backup_data plugin_config_file data_filenamekey
gpbackup invokes the backup_data plugin command on each segment host during a streaming backup.
The backup_data implementation should read a potentially large stream of data from stdin and write the data to a single file on the remote storage system. The data is sent to the command as a single continuous stream per Greenplum Database segment. If backup_data modifies the data in any manner (i.e. compresses), restore_data must perform the reverse operation.
Name or maintain a mapping from the destination file to data_filenamekey. This will be the file key used for the restore operation.
- The absolute path to the plugin configuration YAML file.
- The mapping key for a specially-named backup file for streamed data.
The backup_data command must exit with a value of 0 on success, non-zero if an error occurs. In the case of a non-zero exit code, gpbackup displays the contents of stderr to the user.