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Posted to issues@storm.apache.org by "Raj Choudhury (JIRA)" <ji...@apache.org> on 2019/08/08 15:06:00 UTC

[jira] [Created] (STORM-3483) Backpressure turns on after topology is idle for 160 minutes

Raj Choudhury created STORM-3483:
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             Summary: Backpressure turns on after topology is idle for 160 minutes
                 Key: STORM-3483
                 URL: https://issues.apache.org/jira/browse/STORM-3483
             Project: Apache Storm
          Issue Type: Bug
          Components: storm-core
    Affects Versions: 1.2.2
            Reporter: Raj Choudhury
         Attachments: image-2019-08-08-15-23-42-157.png, image-2019-08-08-15-59-25-655.png, image-2019-08-08-16-02-09-750.png

Storm version used 1.2.2

While testing a topology we noticed that backpressure was being triggered on an idle topology, without any data going through the system for roughly 160 minutes. However once we starting putting data through the system, backpressure behaved as normal and is off.

We have storm metrics logger to log the disruptor queue sizes, and during this test we can see the receive queue population is 0 when backpressure kicks in. 

 

We confirmed this by turning debug logs on for storm.

!image-2019-08-08-16-04-45-092.png!

What a normal system with data going through looks like...

!image-2019-08-08-15-59-25-655.png!

 

In an idle system where backpressure occurs... 

!image-2019-08-08-16-02-09-750.png!

 



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