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Amazon Redshift sources in mapping tasks

Amazon Redshift sources in
mapping
tasks

For Amazon Redshift source connections used in template-based

mapping

tasks, you can configure advanced properties in the

Sources

page of the

Mapping

Task wizard.

You can configure the following advanced properties:

Advanced Property	Description
S3 Bucket Name	Amazon S3 bucket name for the Amazon Redshift target data. Use an S3 bucket in the same region as your Amazon Redshift cluster.
Enable Compression	Compresses staging files before writing the files to Amazon Redshift. Task performance improves when the runtime environment compresses the staging files. Default is selected.
Staging Directory Location	Amazon Redshift staging directory. When you run a task in Secure Agent runtime environment, specify a directory path that is available on each Secure Agent machine in the runtime environment. When you run a task in Hosted Agent runtime environment, leave the staging directory blank. The Hosted Agent creates a directory at a temporary location.
UnloadOptions Property File	Unload command options. Add options to the unload command to write data from an Amazon Redshift object to an S3 bucket. You can add the following options: DELIMITER PARALLEL ESCAPE AWS_IAM_ROLE When you run a task in the Secure Agent runtime environment, either specify the path of the property file that contains the unload options or specify the unload options directly in the UnloadOptions Property File field. When you run a task in the Hosted Agent runtime environment, specify options directly in the UnloadOptions Property File field.
Turn on S3 Client Side Encryption	Indicates that the Secure Agent encrypts data by using a private encryption key.
Encryption Type	Select the source encryption type. You can select from the following encryption types: SSE-S3 SSE-KMS Default is SSE-S3 For more information, see Data encryption in Amazon Redshift sources .
Enable Downloading S3 Files in Multiple Parts	Downloads large Amazon S3 objects in multiple parts. When the file size of an Amazon S3 object is greater than 5 MB, you can choose to download the object in multiple parts in parallel.
Part Size	Specifies the part size of an object. Default is 5 MB.
Infa Advanced Filter	Not applicable for Amazon Redshift Connector.
Pre-SQL	The pre-SQL commands to run a query before you read data from Amazon Redshift. You can also use the UNLOAD or COPY command. The command you specify here is processed as a plain text.
Post-SQL	The post-SQL commands to run a query after you write data to Amazon Redshift. You can also use the UNLOAD or COPY command. The command you specify here is processed as a plain text.
SQL Query	Overrides the default query. Enclose column names in double quotes. The SQL query is case sensitive. Specify an SQL statement supported by the Amazon Redshift database.
Number of Sorted Ports	Number of columns used when sorting rows queried from the source. The agent adds an ORDER BY clause to the default query when it reads source rows. The ORDER BY clause includes the number of ports specified, starting from the top of the transformation. When you specify the number of sorted ports, the database sort order must match the session sort order. Default is 0.
Select Distinct	Selects unique values. The agent includes a SELECT DISTINCT statement if you choose this option. Amazon Redshift ignores trailing spaces. Therefore, the agent might extract fewer rows than expected.
Source Table Name	You can override the default source table name.
Tracing Level	Sets the amount of detail that appears in the log file. You can choose terse, normal, verbose initialization, or verbose data. Default is normal.

Amazon Redshift objects in mapping tasks

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