What is parallel routine in Datastage?
A parallel routine provides us features to use external functionality written in C/C++ code to use in Datastage. Even though Datastage has most of the essential functions available, routines are very helpful to create custom functions for a very specific logic.
What is parallel routine?
Parallel jobs can execute routines before or after a processing stage executes (a processing stage being one that takes input, processes it then outputs it in a single stage), or can use routines in expressions in Transformer stages.
What is parallel job and sequence job in Datastage?
IBM® InfoSphere® DataStage® includes a special type of job, known as a sequence job, that you use to specify a sequence of parallel jobs or server jobs to run. You specify the control information, such as the different courses of action to take depending on whether a job in the sequence succeeds or fails.
How do you call a routine in Datastage?
kmalla
- kmalla. Answered On : Jun 29th, 2006.
- In transformer stage we have to edit the field and click dsRoutines.It will prompt to select the routine .Thats it.
What is shared container in DataStage?
Shared containers comprise groups of stages and links and are stored in the Repository like IBM® InfoSphere® DataStage® jobs. When you insert a shared container into a job, InfoSphere DataStage places an instance of that container into the design.
What is the difference between server and parallel jobs?
Parallel job will be a lot faster than server job even if it runs on single node. The obvious incentive for going parallel is data volume. Parallel jobs can remove bottlenecks and run across multiple nodes in a cluster for almost unlimited scalability. At this point parallel jobs become the faster and easier option.
What are the stages in Datastage?
DataStage provides three types of stages:
- Server Job Database Stages.
- Server Job File Stages.
- Dynamic Relational Stages.
- Processing Stages.
What is routine in DataStage?
These routines are stored under the Routines > Examples > Functions folder in the repository tree and are used by the built-in transforms supplied with InfoSphere DataStage. You can copy these routines and use them as a basis for your own user-written transform functions. Transform functions used by the SDK transforms.
Which are routines in the DataStage manager transformer stage?
It can be called via transformer stage. There are three types of routines such as, parallel routines, main frame routines and server routines.
Which types of parallelism are supported by DataStage?
There are two basic types of parallel processing; pipeline and partitioning. InfoSphere® DataStage® allows you to use both of these methods….Parallel processing
- Pipeline parallelism.
- Partition parallelism.
- Combining pipeline and partition parallelism.
- Repartitioning data.
What are the different stages for parallel and sequence job?
Parallel job stages and server job stages
| Stage name | Job type | Palette category |
|---|---|---|
| Hashed File | Server | File |
| Head | Parallel | Development/Debug |
| Hierarchical Data | Parallel | Real Time |
| IDoc Extract Connector | Parallel, server | Application |