What is Peek Stage ? || Tutorial || Practice Bits || Real Time Scenario’s
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What is Peek Stage in IBM Info Sphere Data stage ?
What is Peek Stage?
What is Peek Stage in Development and Debug Stage?
Peek Stage:
1.The Peek stage is a Development/Debug stage.
2. It can have a single input link and any number of output links.
3.The Peek stage lets you print record column values either to the job log or to a separate output link as the stage copies records from its input data set to one or more output data sets.
4.Like the Head stage and the Tail stage (Sample stage), the Peek stage can be helpful for monitoring the progress of your application or to diagnose a bug in your application.
The stage editor has three pages:
Stage Page.This is always present and is used to specify general information about the stage.
Input Page.This is where you specify the details about the single input set from which you are selecting records.
Output Page. This is where you specify details about the processed data being output from the stage.
Peek Stage Properties:
1.Rows
Ø All records[AfterSkip]=True/False
Print all rows following any requested skip positioning.
All records[AfterSkip]=True/False
If we select True then Number of records [Per Partition]=10 it wont come if we set false then only the number of records[ Per Partition]=10 will appear
2.Columns
Ø Peek all input columns=True/False
When set to True prints all column values. When set to False, prints specific column values, which must be specified.
3.Partitions
Ø All Partitions=True/False
When set to True prints rows from all partitions. When set to False, prints from specific partition numbers, which must be specified.
4.Options
Ø Peek Records output mode=Joblog/output
Job log = print output to log file; Output = write to second output link of stage
Ø Show column names=True/False
Set True to print the column name, followed by a colon, followed by the value; otherwise prints only the value, followed by a space.
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