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Hitting PermissionError when trying to reproduce bug rabbitmq-cluster-operator-782 with Sieve #115

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jerrinsg opened this issue Mar 7, 2023 · 0 comments · Fixed by #116
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Hitting PermissionError when trying to reproduce bug rabbitmq-cluster-operator-782 with Sieve #115

jerrinsg opened this issue Mar 7, 2023 · 0 comments · Fixed by #116

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@jerrinsg
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jerrinsg commented Mar 7, 2023 •
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Hi,

Following the steps in reprod.md to reproduce intermediate-state bug 1 found in rabbitmq-operator (rabbitmq-cluster-operator-782), I am hitting a PermissionError:

$ python3 reproduce_bugs.py -c rabbitmq-operator -b intermediate-state-1
...

wait for final grace period 80 seconds
Traceback (most recent call last):
  File "/Users/jshajigeorge/work/sieve/sieve.py", line 657, in run_test
    run_workload(test_context)
  File "/Users/jshajigeorge/work/sieve/sieve.py", line 550, in run_workload
    os.killpg(streaming.pid, signal.SIGTERM)
PermissionError: [Errno 1] Operation not permitted

Total time: 254.97307181358337 seconds
Please refer to sieve_test_results/rabbitmq-operator-resize-pvc-rabbitmq-operator-intermediate-state-1.yaml.json for more detailed information

Full logs attached in sieve-rabbitmq-782-EPERM.txt

This was run on a Mac OS machine. Version details attached in sw_vers.txt.
jerrinsg added a commit to jerrinsg/sieve that referenced this issue Mar 8, 2023
@jerrinsg
Fix PermissionError hit while reproducing rabbitmq-cluster-operator-782
521b048 
While trying to reproduce intermediate-state bug 1:
rabbitmq-cluster-operator-782 with Sieve on my Mac machine, I hit the
below error:
  File "/Users/jshajigeorge/work/sieve/sieve.py", line 550, in run_workload
    os.killpg(streaming.pid, signal.SIGTERM)
PermissionError: [Errno 1] Operation not permitted

This is because Sieve is trying to kill the controller log streaming
process which is already in a Zombie process. This is not permitted in
Mac - zombie processes are reaped by its parent when the parent dies.

This change fixes this issue by ignoring the exception raised when this
happens and adds a log statement to report this.

Fixes sieve-project#115
@jerrinsg jerrinsg mentioned this issue Mar 8, 2023
Merged
marshtompsxd pushed a commit that referenced this issue Mar 8, 2023
@jerrinsg
Fix PermissionError hit while reproducing rabbitmq-cluster-operator-7…
1e66368 
…82 (#116)

While trying to reproduce intermediate-state bug 1:
rabbitmq-cluster-operator-782 with Sieve on my Mac machine, I hit the
below error:
  File "/Users/jshajigeorge/work/sieve/sieve.py", line 550, in run_workload
    os.killpg(streaming.pid, signal.SIGTERM)
PermissionError: [Errno 1] Operation not permitted

This is because Sieve is trying to kill the controller log streaming
process which is already in a Zombie process. This is not permitted in
Mac - zombie processes are reaped by its parent when the parent dies.

This change fixes this issue by ignoring the exception raised when this
happens and adds a log statement to report this.

Fixes #115
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Fix PermissionError hit while reproducing rabbitmq-cluster-operator-782 jerrinsg/sieve
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@jerrinsg