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English
  • Data Engineering Streaming 10.2.2
  • All Products

Table of Contents

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  1. Preface
  2. Introduction to Big Data Streaming
  3. Big Data Streaming Administration
  4. Sources in a Streaming Mapping
  5. Targets in a Streaming Mapping
  6. Streaming Mappings
  7. Window Transformation
  8. Connections
  9. Sample Files

User Guide

User Guide

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Advanced Properties

Advanced Properties

The Developer tool displays the advanced properties for Kafka sources in the Output transformation in the Read view.
The following table describes the advanced properties that you can configure for Kafka sources:
Property
Description
Operation Type
Specifies the type of data object operation.
This is a read-only property.
Guaranteed Processing
Ensures that the mapping processes messages that the sources publish and delivers them to the targets at least once. In the event of a failure, there could be potential duplicates but the messages are processed successfully. If the external source or the target is not available, the mapping execution stops to avoid any data loss.
By default, the Guaranteed Processing property is selected.
Start Position Offset
The time from which the Kafka source starts reading messages from a Kafka topic when you run a mapping.
You can select one of the following options:
  • Custom. Read messages from a specific time.
  • Earliest. Read the earliest messages available on the Kafka topic.
  • Latest. Read messages received by the Kafka topic after the mapping has been deployed.
This property is applicable for Kafka versions 0.10.1.0 and later.
Custom Start Position Timestamp
The time in GMT from which the Kafka source starts reading Kafka messages from a Kafka topic.
Specify a time in the following format:
dd-MM-yyyy HH:mm:ss.SSS
The milliseconds are optional.
This property is applicable for Kafka versions 0.10.1.0 and above.
Consumer Configuration Properties
The configuration properties for the consumer. If the Kafka data object is reading data from a Kafka cluster that is configured for Kerberos authentication, include the following property:
security.protocol=SASL_PLAINTEXT,sasl.kerberos.service.name=kafka,sasl.mechanism=GSSAPI
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