Bug 1850092

Summary:	Memory Leak from tekton-pipelines-controller pod
Product:	Red Hat OpenShift Pipelines	Reporter:	Mohit Sheth <msheth>
Component:	pipelines	Assignee:	Vincent Demeester <vdemeest>
Status:	NEW ---	QA Contact:	Ruchir Garg <rgarg>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	vdemeest
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Target Release:	1.0
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Description Mohit Sheth 2020-06-23 14:15:01 UTC

Description of problem:
The memory (container_memory_rss) of tekton-pipelines-controller pod increased from 119MBs to 178MBs

Version-Release number of selected component (if applicable):
This is on Openshift Container Platform 4.4.6

How reproducible:


Steps to Reproduce:
1.Have 100 Pipelineruns execute in parallel 
2.Perform the above every 2 days
3.Observe the container_memory_rss over a few days in openshift-pipelines namespace

Actual results:
Memory increases when the cluster is idle

Expected results:
Memory shouldn't increase when the cluster is idle

Additional info:
snapshot link https://snapshot.raintank.io/dashboard/snapshot/EUIbLEZoVxQRj2NSiV1KOX1KKrBt5Kjx?orgId=2&fullscreen&panelId=63