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rmb938 opened this issue Jan 19, 2018 · 19 comments
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Leader Election #434

rmb938 opened this issue Jan 19, 2018 · 19 comments
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@Invictus17
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@rmb938
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rmb938 commented Jan 19, 2018 •
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It would be nice to have a built in way to do leader election similar to the tooling in client-go.

https://github.com/kubernetes/client-go/blob/master/tools/leaderelection/leaderelection.go
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@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Apr 22, 2019
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/lifecycle rotten

@k8s-ci-robot k8s-ci-robot added lifecycle/rotten Denotes an issue or PR that has aged beyond stale and will be auto-closed. and removed lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. labels May 22, 2019
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@fejta-bot: Closing this issue.

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@jdamata
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jdamata commented Sep 3, 2019

/reopen

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@roycaihw roycaihw reopened this Jun 5, 2020
@roycaihw roycaihw added help wanted Denotes an issue that needs help from a contributor. Must meet "help wanted" guidelines. kind/feature Categorizes issue or PR as related to a new feature. and removed lifecycle/rotten Denotes an issue or PR that has aged beyond stale and will be auto-closed. labels Jun 5, 2020
@roycaihw
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roycaihw commented Jun 5, 2020

The Java client also supports leader election with a similar implementation. It would be great for the Python client to also support leader election.

@Invictus17
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Can someone describe a bit more about this issue or direct me to a resource that could help.

@Invictus17
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@roycaihw I'd like to work on this issue.

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roycaihw commented Jul 1, 2020

/assign @Invictus17

please go for it!

@dims
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dims commented Jul 2, 2020

Looks like the java one is here https://github.com/kubernetes-client/java/commits/master/extended/src/main/java/io/kubernetes/client/extended/leaderelection

@Invictus17
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Hi folks,
Sharing a document stating my proposal and a description for this specific task. I'd be happy to address any feedback!
https://docs.google.com/document/d/1KJAcdMv4NZBqyz_WrLfDEVTFnqvlXdrIopHwkcMfWlw/edit?usp=sharing

@Invictus17 Invictus17 mentioned this issue Jul 31, 2020
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@Invictus17
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@rmb938 @dims It'd be great to have your opinions on the PR!

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dims commented Aug 7, 2020

@Invictus17 you have @roycaihw reviewing it ... he's the best!

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@Invictus17 you have @roycaihw reviewing it ... he's the best!

True that :)

@jdamata jdamata mentioned this issue Sep 4, 2020
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Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Nov 5, 2020
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Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
Rotten issues close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle rotten

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Dec 5, 2020
@k8s-ci-robot k8s-ci-robot added the lifecycle/rotten Denotes an issue or PR that has aged beyond stale and will be auto-closed. label Dec 5, 2020
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Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
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/close

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@fejta-bot: Closing this issue.

In response to this:

Rotten issues close after 30d of inactivity.
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yliaog pushed a commit to yliaog/client-python that referenced this issue Jan 8, 2022
@Invictus17
Leader Election issue kubernetes-client#434
4d29af1 
changed file naming style consistent with the existing go client code

Update example.py

Changed file and folder names

Rename LeaderElection.py to leaderelection.py

Rename threadingWithException.py to threadingwithexception.py

Rename ConfigMapLock.py to configmaplock.py

LeaderElection to leaderelection

Added boiler plate headers, updated variable and function names consistent with the guidelines, removed the ctypes dependency by using traces to kill threads, changed logic for leader now it gives up and doesn't re-join as a follower if it fails to update lease

added correct boiler plate year

Rename threadingWithTrace.py to threadingwithtrace.py

Update leaderelection.py

Update example.py

Changes based on review - logging, OnStoppedLeading is not killed abruptly, OnStartedLeading is not run in a separate thread, adding README

Update example.py

updated comments

set threads as daemon

Update README.md

Code made consistent with other clients.

Update example.py

Update leaderelection.py

Error & exception handling for the annotation, reduced indentation

Adding serializing functions for serializing & de-serializing locks, leader_election_record as a class

Adding a test

Adding boilerplate header

Rename leaderelectiontest.py to leaderelection_test.py

Updated boiler plates

handling imports for pytest

handling 'HTTP not found' compatibility with python 2 & 3, & handling relative imports

Update leaderelection.py

to check tests for tox

assertEquals -> assertEqual

Update leaderelection_test.py

making Threading compatible for Python 2

changing datetime.timestamp for backward compatibility with Python 2.7

Adding comments for test_Leader_election_with_renew_deadline & making
candidates run in parallel for test_leader_election

remove redundant daemon = True reassignment

common thread lock for MockResourceLock
yliaog pushed a commit to yliaog/client-python that referenced this issue Jan 8, 2022
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Merge pull request kubernetes-client#206 from Invictus17/master
4bf72d7 
Leader Election issue kubernetes-client#434
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