Talend Assessment Report
This topic contains information about the Talend assessment report. The assessment assesses workloads and produces in-depth insights that help to plan the migration. The input format for the Talend assessment is ITEM files.
In This Topic:
Highlights
The highlights section gives you a high-level overview of your assessment summary of the analytics performed on the selected workloads. It includes a graphical depiction of the complexity of files as well as the summary of the files used.
Summary
This section illustrates the input Talend files that were analyzed across the various components. Here you can see the number of files, components, and connections as well as queries from the input workload.
Complexity
This section provides a summarized graphical representation of the complexity of files that helps in making different decisions, including budget estimation.
Analysis
This topic provides a detailed examination of source files and artifacts.
Source Analysis
This section provides a comprehensive report of the source files including information about each file’s components, complexity, connections, and so on, as well as the total number of files.
- File Name: Name of the file.
- Source Databases: Provides the type of source databases.
- Components: Used to carry out certain tasks or jobs such as, read data component, get data component, write data component, etc.
- Connections: Interface to connect between components.
- Expressions: Used to accomplish custom tasks or jobs. The custom expressions can be written in the Expression editor of the tMap component.
- Commands: To perform specified functionalities.
- Queries: Provides the number of queries in the file.
- Complexity: Provides the complexity of the file.
Lineage
End-to-end data and process lineage identify the complete dependency structure through interactive and drill-down options to the last level.
Typically, even within one line of business, multiple data sources, entry points, ETL tools, and orchestration mechanisms exist. Decoding this complex data web and translating it into a simple visual flow can be extremely challenging during large-scale modernization programs. The visual lineage graph adds tremendous value and helps define the roadmap to the modern data architecture. It deep dives into all the existing flows, like Autosys jobs, applications, ETL scripts, BTEQ/Shell (KSH) scripts, procedures, input and output tables, and provides integrated insights. These insights help data teams make strategic decisions with greater accuracy and completeness. Enterprises can proactively leverage integrated analysis to mitigate the risks associated with migration and avoid business disruption.
Now, let’s see how you can efficiently manage lineage.
To view the required lineage:
- Select either the Process or Data tab.
- Enter the keywords in the Search Keywords field.
- Click the Search icon to generate the lineage.
Process lineage illustrates the dependencies between two or more processes such as files, jobs, etc., whereas data lineage depicts data flow between two or more data-holding components such as entities, flat files, etc.
In addition, the filter search 
icon allows you to include or exclude particular nodes to obtain the required dependency structure. You can also choose the direction of the lineage. By default, the Dependency Direction is Left to Right Hierarchy. You can also choose Right to Left Hierarchy direction as required. Moreover, you can also increase the Hierarchy Levels to nth level.
Lineage facilitates you visualize how your selected nodes are connected and depend on each other. The nodes and their connecting edges (relationships) help you to understand the overall structure and dependencies.
|
Nodes |
Edges |
 Tables |
 Call |
 File |
 Read |
 Job |
 Execute |
 Autosys Box |
 Write |
 Flat File |
 OTHERS |
 DB_TYPE |
|
Manage Lineage
This feature enables you to view and manage your lineage. You can add, modify, or delete nodes and their relationships to generate an accurate representation of the required dependency structure. There are two ways to update the lineage: either using Complete Lineage report or Lineage Template.
Using Complete Lineage report
Follow the below steps to modify the lineage:
- Click the Manage Graph icon.
- Click Download Complete Lineage to update, add, or delete the nodes and their relationships in the current lineage.
- Once the complete lineage report is downloaded, you can make necessary updates such as updating, deleting or adding the nodes and its relationships.
- After making the required changes, upload the updated lineage report in Upload to Modify Lineage.
- Click Apply to incorporate the updates into the dependency structure.
- Generate the required process or data lineage.
Using Lineage Template
Follow the below steps to add new nodes and their relationships to the current lineage report:
- Click the Manage Graph icon.
- Click Download Lineage Template.
- Once the lineage template is downloaded, you can add new nodes and relationships in the template.
- After making the required changes, upload the template in Upload to Modify Lineage.
- Click Apply to incorporate the updates into the complete dependency structure.
- Generate the required process or data lineage.
You can also apply:
| Feature | Icon | Use |
| Filter |  | Used to filter the lineage. |
| Reload |  | Assists in reloading graphs. |
| Save |  | Used to save the lineage. |
| Download |  | Used to download the file. |
| Expand |  | Used to enlarge the screen. |
Downloadable Reports
Downloadable reports allow you to export detailed assessment reports of your source data which enables you to gain in-depth insights with ease. To access these assessment reports, click Reports.
Types of Reports
In the Reports section, you can see various types of reports such as Insights and Recommendations, Source Inventory Analysis, and Lineage reports. Each report type offers detailed information allowing you to explore your assessment results.
Insights and Recommendations
This report provides an in-depth insight into the source input files. It contains the final output including the details of queries, complexity, jobs, and so on.
Here, you can see the talend folder and the Lineage Dependency Report.xlsx.
Lineage Dependency Report.xlsx: This report contains information about views and job level lineages. It includes information about used and impacted tables, views, files, direct dependencies, dependency hierarchy and more.
This report contains the following information:
- view_report: Provides information about the views.
- script_report: Provides information about job level lineage.
Detailed Talend Assessments Reports
To access a detailed Talend assessment report, open the talend folder.
Talend Report.xlsx: This report provides insights about the source inventory. It helps you plan the next frontier of a modern data platform methodically. It includes a report summary, aggregated inventory, file summary, job summary, and more.
This report contains the following information:
- Report Summary: Provides information about all the generated artifacts.
- Volumetric Info: Presents a summary of the aggregated inventory after analyzing the source files. For instance, it provides volumetric info about the total number of jobs, components, queries, and likewise. It also provides job-level complexity.
- File Summary: Lists all the files existing in the Talend source files along with the associated jobs, count of queries, components, expressions, length of expressions, and a lot more.
- Job Summary: Lists all the jobs associated with the input files and components. It also provides information about the types of components, length of expressions, and a lot more.
- Connection Summary: Connections are interfaces to connect components. Lists all the connections along with information about files, jobs, meta names, source components, and target components.
- Context EVN Summary: Lists all the jobs and the associated environments in which the jobs are expected to run.
- Component Pattern Summary: Provides details about components with similar patterns along with the number of occurrences.
- Job Pattern Summary: Provides details about jobs with similar patterns along with the number of occurrences.
- Complexity Summary: Provides the job complexity details.
Browse through the query folder to access the Talend Queries.csv file.
Talend Queries.csv: This report provides information about queries including the used and impacted tables, analyzed status, complexity, and more. If the analyzed status is Analyzed, it indicates that the query is analyzed successfully. Conversely, a Not Analyzed status indicates that the query is not analyzed.
Source Inventory Analysis
It is an intermediate report which helps to debug failures or calculate the final report. It includes all the generated CSV reports along with unparsed ETL files, invalid query, and procedures reports.
Assessment_unparsed_etl_files.csv: This report lists all the unparsed Talend files along with its type and the reason for parsing failure.
external_procedure_detail.csv: Provides information about external procedure files. It includes information about components, procedures, and its availability.
invalid_query.csv: This report lists all the invalid queries.
Lineage Report
This report provides complete dependency details for all nodes. It provides an end-to-end data and process lineage that helps to identify the complete dependency structure and the data flow.
This report contains the following information:
- Dependency (Process): Provides information about the process lineage.
- Dependency (Data): Provides information about the data lineage.
- Nodes: Lists all the source and target nodes along with its type.
- Volumetric Info (Summary): Provides volumetric information about the artifact types such as input tables, output tables, and schedulers.
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