Help Center/ MapReduce Service/ Developer Guide (Normal_Earlier Than 3.x)/ Kafka Application Development/ Application Development/ Description of the Sample Project Configuration File
Updated on 2022-09-14 GMT+08:00
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Description of the Sample Project Configuration File

Descriptions about configuration files and key parameters in the Conf directory

  • Producer API configuration items
Table 1 Configuration items in the producer.properties file

Parameter

Description

Remarks

security.protocol

Security protocol type

The Producer uses the security protocol of the type specified by this parameter. When Kerberos authentication is enabled, only the SASL protocol is supported, and this parameter must be set to SASL_PLAINTEXT. Set this parameter to PLAINTEXT when Kerberos authentication is disabled.

kerberos.domain.name

Domain name

Kerberos domain name of the MRS cluster. This parameter is not required for clusters with Kerberos authentication disabled.

sasl.kerberos.service.name

Service name

The service name indicates the Kerberos username used by Kafka clusters for running. This parameter must be configured as kafka. You do not need to configure this parameter for clusters with Kerberos authentication disabled.
  • Consumer API configuration items
Table 2 Configuration items in the consumer.properties file

Parameter

Description

Remarks

security.protocol

Security protocol type

The Consumer uses the security protocol of the type specified by this parameter. When Kerberos authentication is enabled, only the SASL protocol is supported, and this parameter must be set to SASL_PLAINTEXT. Set this parameter to PLAINTEXT when Kerberos authentication is disabled.

kerberos.domain.name

Domain name

Kerberos domain name of the MRS cluster. This parameter is not required for clusters with Kerberos authentication disabled.

group.id

Consumer group ID

-

auto.commit.interval.ms

Indicates whether to automatically submit the offset.

Boolean value. The default value is true.

sasl.kerberos.service.name

Service name

The service name indicates the Kerberos username used by Kafka clusters for running. This parameter must be configured as kafka. You do not need to configure this parameter for clusters with Kerberos authentication disabled.
  • Configuration items of the client information
Table 3 Configuration items in the client.properties file

Parameter

Description

Remarks

metadata.broker.list

Metadata Broker address list

This parameter is used to create a connection to the metadata broker. This parameter is required for APIs that are used to access metadata directly. The access port does not support Kerberos authentication. For details about the port description, see Security APIs.

kafka.client.zookeeper.principal

Authentication and domain name used by the Kafka cluster to access ZooKeeper

-

bootstrap.servers

Broker address list

Connections with the Broker are created based on this parameter. For details about the port configuration items, see Security APIs.

zookeeper.connect

ZooKeeper address list

This parameter is used to access the ZooKeeper. The Kafka service name kafka must be added at the end.
  • Indicates whether to enable Kerberos authentication for MRS.
Table 4 Configuration items in the kafkaSecurityMode file

Parameter

Description

Remarks

kafka.client.security.mode

Whether to enable Kerberos authentication for the MRS cluster where Kafka is located.

If Kerberos authentication is enabled, set this parameter to yes. Otherwise, set this parameter to no.
  • Configuration items in the log4j.properties file

    Configuration file of the Log4j framework. By default, no run log of the sample project is entered.

Parent topic: Application Development