Adding initial v1alpha2 API controller #457

johnugeorge · 2019-04-15T09:19:43Z

This is an initial version of level based implementation of controller for early review of code flow. I am waiting for #435 and #456 to get merged first and make necessary changes after that.

Invalid conditions are not validated yet.
Metric collector code is not added yet

Fixes: #441

/cc @richardsliu @gaocegege @YujiOshima

This change is

pkg/api/operators/apis/experiment/v1alpha2/register.go

pkg/api/operators/apis/trial/v1alpha2/register.go

pkg/controller/v1alpha2/experiment/experiment_controller.go

pkg/controller/v1alpha2/experiment/util/status_util.go

pkg/controller/v1alpha2/trial/util/status_util.go

pkg/controller/v1alpha2/experiment/experiment_controller.go

pkg/controller/v1alpha2/experiment/util/api_util.go

pkg/controller/v1alpha2/trial/util/api_util.go

pkg/controller/v1alpha2/experiment/util/status_util.go

richardsliu · 2019-04-16T19:56:02Z

pkg/controller/v1alpha2/trial/util/status_util.go

+ log.Info("Error in converting unstructured to status: %v ", err)
+ return err
+ }
+ if jobStatus.Active == 0 && jobStatus.Succeeded > 0 {


I think batch job supports JobCondition now: https://github.com/kubernetes/api/blob/master/batch/v1/types.go#L168

pkg/controller/v1alpha2/trial/util/status_util.go

pkg/controller/v1alpha2/experiment/experiment_controller.go

pkg/api/operators/apis/experiment/v1alpha2/experiment_types.go

pkg/api/operators/apis/experiment/v1alpha2/util.go

hougangliu · 2019-04-18T06:25:36Z

pkg/api/operators/apis/experiment/v1alpha2/util.go

+func (exp *Experiment) MarkExperimentStatusSucceeded(reason, message string) {
+ currentCond := getCondition(exp, ExperimentRunning)
+ if currentCond != nil {
+ exp.setCondition(ExperimentRunning, v1.ConditionFalse, currentCond.Reason, currentCond.Message)


Why mark ExperimentRunning as v1.ConditionFalse?
and why not mark ExperimentCreated as v1.ConditionFalse when MarkExperimentStatusRunning?

I tried to follow the same conventions from the job operators. But, it is true that we have to rethink on making more meaningful conditions. eg: we may not need Successful condition and Running condition. We could make Running as false stating reason as Successful. This is followed in k8s default objects

pkg/controller/v1alpha2/experiment/util/status_util.go

pkg/controller/v1alpha2/experiment/experiment_controller.go

cmd/katib-controller/v1alpha2/main.go

pkg/controller/v1alpha2/experiment/experiment_controller.go

johnugeorge · 2019-04-22T18:21:59Z

/retest

andreyvelich · 2019-04-23T00:31:46Z

pkg/controller/v1alpha2/experiment/experiment_controller.go

+func (r *ReconcileExperiment) createTrials(instance *experimentsv1alpha2.Experiment, addCount int) error {
+
+ logger := log.WithValues("Experiment", types.NamespacedName{Name: instance.GetName(), Namespace: instance.GetNamespace()})
+ trials, err := util.GetSuggestions(instance, addCount)


@johnugeorge
It can run more than one Suggestion at once, since we name it GetSuggestions?

Can you please explain more?

I mean you have named this function GetSuggestions. Is it make sense? I thought we should name it GetSuggestion.

pkg/controller/v1alpha2/experiment/util/status_util.go

pkg/controller/v1alpha2/trial/util/status_util.go

hougangliu · 2019-04-23T00:23:23Z

pkg/controller/v1alpha2/experiment/experiment_controller.go

+ completedCount := instance.Status.TrialsSucceeded + instance.Status.TrialsFailed + instance.Status.TrialsKilled
+
+ if activeCount > parallelCount {
+ deleteCount := activeCount - parallelCount


I think line 215 and 223 can change to if activeCount >= parallelCount {} else {}

hougangliu · 2019-04-23T00:28:39Z

pkg/controller/v1alpha2/experiment/experiment_controller.go

+ if deleteCount > 0 {
+ //delete 'deleteCount' number of trails. Sort them?
+ logger.Info("DeleteTrials", "deleteCount", deleteCount)
+ err = r.deleteTrials(instance, deleteCount)


r.deleteTrials will make Status.TrialsKilled? will it make completedCount value dirty in line 213?

I feel that TrialsKilled has a different meaning. We should just delete the trial here.

pkg/controller/v1alpha2/experiment/experiment_controller.go

pkg/controller/v1alpha2/trial/trial_controller.go

hougangliu · 2019-04-23T01:14:25Z

@richardsliu @YujiOshima @johnugeorge @gaocegege how about merging this PR first? Then we can code further based on it.

gaocegege · 2019-04-23T01:28:38Z

SGTM.

/lgtm

andreyvelich · 2019-04-23T01:34:29Z

@hougangliu @gaocegege @richardsliu @YujiOshima @johnugeorge @gaocegege
Should we split the work on the Controller in to small issues, after we merge this PR?

YujiOshima · 2019-04-23T02:51:51Z

pkg/controller/v1alpha2/trial/trial_controller.go

+ instance.Status.StartTime = &now
+ }
+ msg := "Trial is created"
+ instance.MarkTrialStatusCreated(util.TrialCreatedReason, msg)


MarkTrialStatusCreated is collect? It looks you need to mark running for going next step.

Trial is marked running when jobs are in running state

YujiOshima · 2019-04-23T02:55:12Z

pkg/controller/v1alpha2/experiment/experiment_controller.go

+ instance.Status.StartTime = &now
+ }
+ msg := "Experiment is created"
+ instance.MarkExperimentStatusCreated(util.ExperimentCreatedReason, msg)


MarkTrialStatusCreated is collect? It looks you need to mark running for going next step.

When the Experiment is created, it is marked Created. It is marked running when trials are created.

YujiOshima · 2019-04-23T03:06:10Z

@hougangliu @andreyvelich Thanks, I agree with we proceed step by step since this change will be big and complicated.
@johnugeorge Does it OK?

johnugeorge · 2019-04-23T12:09:52Z

I have verified creation of experiment and trial objects with status updates. We can merge this PR if current review is completed.

hougangliu · 2019-04-23T23:20:47Z

/lgtm
/approve

k8s-ci-robot · 2019-04-23T23:20:51Z

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* Adding initial v1alpha2 API controller (kubeflow#457) * Adding initial v1alpha2 controller * Adding logs * Adding comments * Adding template functions for experiment * Adding error checks * chore: Skip test when code is not changed (kubeflow#467) Signed-off-by: Ce Gao <gaoce@caicloud.io> * Add serviceAccountName in UI deployment (kubeflow#469) * feat: Introduce suggestion Signed-off-by: Ce Gao <gaoce@caicloud.io> * owners: Add xinyi yu Signed-off-by: Ce Gao <gaoce@caicloud.io>

k8s-ci-robot requested review from gaocegege, richardsliu and YujiOshima April 15, 2019 09:19

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richardsliu mentioned this pull request Apr 16, 2019

StudyJob v1alpha2 API version #370

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johnugeorge added 3 commits April 19, 2019 14:48

Adding initial v1alpha2 controller

7a8c0ee

Adding logs

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Adding comments

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johnugeorge force-pushed the controller-v1alpha2 branch from 04b1cc4 to 8c48f16 Compare April 21, 2019 11:02

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johnugeorge mentioned this pull request Apr 22, 2019

[v1alpha2] Controller implementation #441

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Adding template functions for experiment

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johnugeorge changed the title ~~WIP: Adding initial v1alpha2 API controller~~ Adding initial v1alpha2 API controller Apr 22, 2019

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Adding error checks

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k8s-ci-robot merged commit 5a7a144 into kubeflow:master Apr 23, 2019

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Kubeflow Steering Committee Elections - Testimonial Phase - Johnu George kubeflow/community#675

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Adding initial v1alpha2 API controller #457

Adding initial v1alpha2 API controller #457

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