[STORM-3483] Backpressure turns on after topology is idle for 160 minutes

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.2.2
• Component/s: storm-core
• Assignee: Unassigned
• Reporter: Raj Choudhury
• Created: 08/Aug/19 15:05
• Updated: 08/Aug/19 16:32

Description

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.

 

In an idle system where backpressure occurs... 

 

 

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