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  1. Preface
  2. Part 1: Introduction to Amazon Redshift connectors
  3. Part 2: Data Integration with Amazon Redshift V2 Connector
  4. Part 3: Data Integration with Amazon Redshift Connector

Amazon Redshift Connectors

Amazon Redshift Connectors

Amazon Redshift targets in mapping tasks

Amazon Redshift targets in
mapping
tasks

For Amazon Redshift target connections used in template-based
mapping
tasks, you can configure advanced properties in the
Targets
page of the
Mapping
Task wizard.
You can configure the following advanced properties:
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.
Specify a directory on the machine that hosts the runtime environment.
Batch Size
Minimum number of rows in a batch. Enter a number greater than 0.
Default is 2000000.
Max Redshift Errors per Upload Batch for INSERT
Number of errors within a batch that causes a batch to fail. Enter a positive integer.
If the number of errors is equal to or greater than the property value, the runtime environment writes the entire batch to the error rows file.
Default is 1.
Truncate Target Table Before Data Load
Truncates an Amazon Redshift target before writing data to the target.
Null value for CHAR and VARCHAR data types
String value used to represent null values in CHAR and VARCHAR fields in Amazon Redshift targets, such as NULL or a space character.
Default is an empty string.
Wait time in seconds for file consistency on S3
Number of seconds to wait for the runtime environment to make the staging files available.
Default is 5.
CopyOptions Property File
Path to the property file.
Enables you to add options to the copy command to write data from Amazon S3 to an Amazon Redshift target. You can add the following options:
  • DELIMITER
  • ACCEPTINVCHARS
  • QUOTE
  • COMPUPDATE
When you run a task in the Secure Agent runtime environment, either specify the path of the property file that contains the copy options or specify the copy options directly in the
CopyOptions Property File
field.
When you run a task in the Hosted Agent runtime environment, you must specify options directly in the
CopyOptions Property File
field.
Turn on S3 Server Side Encryption
Indicates that Amazon S3 encrypts data during upload and decrypts data at the time of access.
Turn on S3 Client Side Encryption
Indicates that the runtime environment encrypts data by using a private encryption key.
If you enable both server side and client side encryption, the runtime environment ignores the server side encryption.
Vacuum Target Table
Recovers disk space and sorts rows in a specified table or all tables in the database.
You can select the following recovery options:
  • None
  • Full
  • Sort Only
  • Delete Only
  • Reindex
Default is None.
Analyze Target Table
Improve the efficiency of the read and write operations.
The query planner on Amazon Redshift updates the statistical metadata to build and choose optimal plans to improve the efficiency of queries.
Prefix for Retaining Staging Files on S3
Retains staging files on Amazon S3.
Provide both a directory prefix and a file prefix separated by a slash (/) or only a file prefix to retain staging files on Amazon S3. For example,
backup_dir/backup_file
or
backup_file
.
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.
Target Table Name
You can override the default target table name.
Part Size
Specifies the part size of an object.
Default is 5 MB.
TransferManager Thread Pool Size
Specifies the number of the threads to write data in parallel.
Default is 10.
Number of Files per Batch
Provide the number of files to calculate the number of the target staging file per batch.
If you do not provide a value, the number of the target staging file is calculated internally.
Specify a minimum value based on the cluster type and number of nodes in the Amazon Redshift cluster. Do not specify a large value. Else, the task fails with an
OutOfMemoryError
error message.
Success File Directory
Directory for the Amazon Redshift success rows file. Specify a directory path that is available on each Secure Agent machine in the runtime environment. By default,
Data Integration
writes the success file to the following directory:
<Secure Agent installation directory>/apps/Data_Integration_Server/data/success
The Hosted Agent does not create a success rows file. Leave the
Success File Directory
field blank when you run a task in the Hosted Agent runtime environment.
Error File Directory
Directory for the Amazon Redshift error rows file.
Directory for error rows file. Specify a directory path that is available on each Secure Agent machine in the runtime environment. By default,
Data Integration
writes the error rows file to the following directory:
<Secure Agent installation directory>/apps/Data_Integration_Server/data/error
When you specify the default error file directory you can download the error file from the schedule tab.
When the Error File Directory is other than the default error directory, you cannot download the error file from the Schedule tab. You must go to the specified directory to retrieve the error file.
The Hosted Agent does not create an error rows file. Leave the
Error File Directory
field blank when you run a task in the Hosted Agent runtime environment.