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Answer Posted / sohanvarma
Component parallelism:- A graph with multiple processes
running simultaneously on separate data uses component
parallelism.
Data parallelism :- A graph that deals with data divided
into segments and operates on each segment simultaneously
uses data parallelism. Nearly all commercial data
processing tasks can use data parallelism. To support this
form of parallelism, Ab Initio provides Partition
components to segment data, and Departition components to
merge segmented data back together .
Pipeline parallelism :- A graph with multiple components
running simultaneously on the same data uses pipeline
parallelism. Each component in the pipeline continuously
reads from upstream components, processes data, and writes
to downstream components. Since a downstream component can
process records previously written by an upstream
component, both components can operate in parallel. NOTE:
To limit the number of components running simultaneously,
set phases in the graph.
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Can some tell me at which level pdl gets resolved when parameters are resolved in abinitio? Also what happens in dml evaluation during parameter evaluation ?
Explain what is de-partition in abinitio?
What kind of layouts does abinitio support?
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Describe how you would ensure that database object definitions (tables, indices, constraints, triggers, users, logins, connection options, and server options etc)are consistent and repeatable between multiple database instances (i.e.: A test and production copy of a database)?
What is publickey and private key?what is the use of this two keys?
What is MAX CORE of a component?
What are differences between different versions of co-op?
What is a local lookup?
Can you explain the performance and scalability of co> operating system?
When we should use 'jobid' for commit table (Output table component??
Tell us about the architecture of abinitio.
What is the use of aggregation when we have rollup as we know rollup component in abinitio is used to summarize a group of data record? Then where we will use aggregation?
Do you think effective communication is necessary for data processing?
what is the output when -1 is put in select_expr of FBE?
