tTachyonConfiguration - 6.3

Talend Components Reference Guide

EnrichVersion
6.3
EnrichProdName
Talend Big Data
Talend Big Data Platform
Talend Data Fabric
Talend Data Integration
Talend Data Management Platform
Talend Data Services Platform
Talend ESB
Talend MDM Platform
Talend Open Studio for Big Data
Talend Open Studio for Data Integration
Talend Open Studio for Data Quality
Talend Open Studio for ESB
Talend Open Studio for MDM
Talend Real-Time Big Data Platform
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

Function

You define a connection to Tachyon in tTachyonConfiguration and configure the file system related components to reused this connection. At runtime, the Spark cluster to be used reads this configuration to connect to Tachyon.

Purpose

tTachyonConfiguration enables the reuse of the connection configuration to Tachyon storage system in the same Job.

Depending on the Talend solution you are using, this component can be used in one, some or all of the following Job frameworks:

tTachyonConfiguration properties in Spark Batch Jobs

Component family

Storage

 

Basic settings

Tachyon master URI

Enter the address of the master server of the Tachyon cluster to be used.

This information can be found in the conf/tachyon-env.sh file of your Tachyon system.

For details about the version compatibility between Tachyon and Spark, see Tachyon documentation at http://tachyon-project.org/documentation/Running-Spark-on-Tachyon.html.

 

UnderFS username

Enter the credential required by the file system (underlayer storage system in terms of Tachyon) used by your Tachyon cluster. The default file system is HDFS.

This information can be found in the conf/tachyon-env.sh file of your Tachyon system.

Usage in Spark Batch Jobs

This component is used with no need to be connected to other components.

You need to drop tTachyonConfiguration along with the file system related Subjob to be run in the same Job so that the configuration is used by the whole Job at runtime.

This component, along with the Spark Batch component Palette it belongs to, appears only when you are creating a Spark Batch Job.

Note that in this documentation, unless otherwise explicitly stated, a scenario presents only Standard Jobs, that is to say traditional Talend data integration Jobs.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Spark Connection

You need to use the Spark Configuration tab in the Run view to define the connection to a given Spark cluster for the whole Job. In addition, since the Job expects its dependent jar files for execution, one and only one file system related component from the Storage family is required in the same Job so that Spark can use this component to connect to the file system to which the jar files dependent on the Job are transferred:

This connection is effective on a per-Job basis.

Related scenarios

For a scenario about how to use the same type of component in a Spark Batch Job, see Writing and reading data from MongoDB using a Spark Batch Job.

tTachyonConfiguration properties in Spark Streaming Jobs

Component family

Storage

 

Basic settings

Tachyon master URI

Enter the address of the master server of the Tachyon cluster to be used.

This information can be found in the conf/tachyon-env.sh file of your Tachyon system.

For details about the version compatibility between Tachyon and Spark, see Tachyon documentation at http://tachyon-project.org/documentation/Running-Spark-on-Tachyon.html.

 

UnderFS username

Enter the credential required by the file system (underlayer storage system in terms of Tachyon) used by your Tachyon cluster. The default file system is HDFS.

This information can be found in the conf/tachyon-env.sh file of your Tachyon system.

Usage in Spark Streaming Jobs

This component is used with no need to be connected to other components.

You need to drop tTachyonConfiguration along with the file system related Subjob to be run in the same Job so that the configuration is used by the whole Job at runtime.

This component, along with the Spark Streaming component Palette it belongs to, appears only when you are creating a Spark Streaming Job.

Note that in this documentation, unless otherwise explicitly stated, a scenario presents only Standard Jobs, that is to say traditional Talend data integration Jobs.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Spark Connection

You need to use the Spark Configuration tab in the Run view to define the connection to a given Spark cluster for the whole Job. In addition, since the Job expects its dependent jar files for execution, one and only one file system related component from the Storage family is required in the same Job so that Spark can use this component to connect to the file system to which the jar files dependent on the Job are transferred:

This connection is effective on a per-Job basis.

Related scenarios

For a scenario about how to use the same type of component in a Spark Streaming Job, see Reading and writing data in MongoDB using a Spark Streaming Job.