tCassandraOutputBulk Standard properties - Cloud - 8.0

Cassandra

Version
Cloud
8.0
Language
English
Product
Talend Big Data
Talend Big Data Platform
Talend Data Fabric
Talend Real-Time Big Data Platform
Module
Talend Studio
Content
Data Governance > Third-party systems > NoSQL components > Cassandra components
Data Quality and Preparation > Third-party systems > NoSQL components > Cassandra components
Design and Development > Third-party systems > NoSQL components > Cassandra components
Last publication date
2024-02-20

These properties are used to configure tCassandraOutputBulk running in the Standard Job framework.

The Standard tCassandraOutputBulk component belongs to the Big Data and the Databases NoSQL families.

The component in this framework is available in all Talend products with Big Data and in Talend Data Fabric.

Basic settings

Property type

Either Built-In or Repository.

Built-In: No property data stored centrally.

Repository: Select the repository file where the properties are stored.

Schema and Edit Schema

A schema is a row description. It defines the number of fields (columns) to be processed and passed on to the next component. When you create a Spark Job, avoid the reserved word line when naming the fields.

Click Edit schema to make changes to the schema. If the current schema is of the Repository type, three options are available:

  • View schema: choose this option to view the schema only.

  • Change to built-in property: choose this option to change the schema to Built-in for local changes.

  • Update repository connection: choose this option to change the schema stored in the repository and decide whether to propagate the changes to all the Jobs upon completion.

    If you just want to propagate the changes to the current Job, you can select No upon completion and choose this schema metadata again in the Repository Content window.

 

Built-In: You create and store the schema locally for this component only.

 

Repository: You have already created the schema and stored it in the Repository. You can reuse it in various projects and Job designs.

When the schema to be reused has default values that are integers or functions, ensure that these default values are not enclosed within quotation marks. If they are, you must remove the quotation marks manually.

For more information, see Retrieving table schemas.

Table type

Select the type of the data model to be used for the table to be created. It can be CQL (actually CQL3) or non-CQL (the legacy thrift-based API of Cassandra before CQL3).

This drop-down list is available only when the DB version you are using is Cassandra 2.0.0 (deprecated). For the Cassandra versions later than 2.0.0, CQL becomes the only model used by this component and so this list is no longer available.

DB Version

Select the Cassandra version you are using.

File name

Type in the name of file into which you want to write the SSTable.

Advanced settings

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at the Job level as well as at each component level.

Global Variables

Global Variables

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl+Space to access the variable list and choose the variable to use from it.

For more information about variables, see Using contexts and variables.

Usage

Usage rule

This component always needs an incoming link.