Pramod Immaneni created APEXCORE-684:
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Summary: Back pressure can create a bursty flow in the input
operators and increased window duration for some windows and short for others
Key: APEXCORE-684
URL: https://issues.apache.org/jira/browse/APEXCORE-684
Project: Apache Apex Core
Issue Type: Improvement
Reporter: Pramod Immaneni
Assignee: Pramod Immaneni
In an application where the processing rate of downstream operators is slower
than the input operator consumption rate, back pressure will kick in and
eventually propagate to the input operator. This will block the input operator
till there is space available in the buffers and consequently block the window
and increase the window duration for some windows and reduce it significantly
for others. If the backpressure feedback can potentially be used by the engine
to slow down the scheduling of data emission from input operator, a.k.a call to
emitTuples method in input operator, it can lead to much more uniform and
steady behavior.
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