Robert Varga created KARAF-5604:
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Summary: karaf:features-generate-descriptor takes long when faced
with complex feature dependencies
Key: KARAF-5604
URL: https://issues.apache.org/jira/browse/KARAF-5604
Project: Karaf
Issue Type: Improvement
Components: karaf-tooling
Affects Versions: 4.1.3
Reporter: Robert Varga
Fix For: 4.2.0, 4.1.5
Opendaylight's distribution-check jobs generate features which have complex
feature dependencies, which exposes scaling issues in
karaf:features-generate-descriptor.
[https://github.com/opendaylight/integration-distribution/tree/master/features/singles/odl-integration-all]
takes ~270 seconds to generate:
real 4m28.834s
user 3m40.287s
sys 1m23.629s
[https://github.com/opendaylight/integration-distribution/tree/master/features/repos/index]
takes ~638 seconds to generate:
real 10m38.859s
user 7m55.004s
sys 3m17.269s
Running profiling shows that this time is dominated by short-lived
FileInputStreams being generated at a rate of 7K-8Kps – which are coming from
both feature reading and from artifact resolution.
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