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diff --git a/keps/sig-storage/0035-20190116-ExecutionHook-apichange.md b/keps/sig-storage/0035-20190116-ExecutionHook-apichange.md
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+---
+kep-number: 35
+title: ExecutionHook 
+authors:
+  - "@jingxu97"
+  - "@xing-yang"
+owning-sig: sig-storage
+participating-sigs:
+  - sig-storage
+  - sig-node
+  - sig-architecture
+reviewers:
+  - "@saad-ali"
+  - "@thockin"
+approvers:
+  - "@thockin"
+  - "@saad-ali"
+editor: TBD
+creation-date: 2019-1-16
+last-updated: 2019-1-16
+status: implementable
+see-also:
+  - n/a
+replaces:
+  - n/a
+superseded-by:
+  - n/a
+---
+
+# Title
+
+ExecutionHook API change
+
+## Table of Contents
+
+  * [Title](#title)
+      * [Table of Contents](#table-of-contents)
+      * [Summary](#summary)
+      * [Motivation](#motivation)
+         * [Goals](#goals)
+         * [Non-Goals](#non-goals)
+      * [Proposal](#proposal)
+         * [User Stories](#user-stories)
+      * [Workarounds](#workarounds)
+      * [Alternatives](#alternatives)
+         * [Risks and Mitigations](#risks-and-mitigations)
+      * [Graduation Criteria](#graduation-criteria)
+      * [Implementation History](#implementation-history)
+
+## Summary
+
+Volume snapshot support was introduced in Kubernetes v1.12 as an alpha feature. 
+In the alpha implementation of snapshots for Kubernetes, there is no snapshot consistency
+guarantees beyond any guarantees provided by storage system (e.g. crash consistency).
+
+This proposal is aimed to address that limitation by providing an `ExecutionHook`
+in the `Container` struct. The snapshot controller will look up this hook before
+taking a snapshot and execute it accordingly.
+
+## Motivation
+
+The volume snapshot feature allows creating/deleting volume snapshots, and the
+ability to create new volumes from a snapshot natively using the Kubernetes API.
+
+However, application consistency is not guaranteed. An user has to figure out how
+to quiece an application before taking a snapshot and unquiece it after taking
+the snapshot.
+
+### Goals
+
+`ExecutionHook` is introduced to define actions that can be taken on a container.
+Specifically it can be used to perform a quiese operation before a volume snapshot
+is taken and then perform an unquiesce operation after a volume snapshot is
+taken to resume the application.
+
+## Non-Goals
+
+This proposal does not provide exact command included in the `ExecutionHook`
+because every application has a different requirement.
+
+## Proposal
+
+An `ExecutionHook` is defined in the following.
+
+```
+// ExecutionHook defines a specific action that should be taken with retries and timeouts
+type ExecutionHook struct {
+        // Command to execute for a particular trigger
+        Handler `json:",inline" protobuf:"bytes,1,opt,name=handler"`
+        // How long the controller should try/retry to execute the hook before giving up
+        RetryTimeOutSeconds int64 `json:"retryTimeOutSeconds,omitempty" protobuf:"varint,2,opt,name=retryTimeOutSeconds"`
+        // Number of retries
+        NumRetries int64 `json:"numRetries,omitempty" protobuf:"varint,3,opt,name=numRetries"`
+}
+```
+
+A `QuiesceUnquiesceHook` struct contains a `Quiesce` and `Unquiesce` `ExecutionHook`.
+
+```
+// QuiesceUnquiesceHook includes a Quiesce action and an Unquiesce action
+type QuiesceUnquiesceHook struct {
+        // The hook to quiesce the application
+        Quiesce *ExecutionHook `json:"quiesce,omitempty" protobuf:"bytes,1,opt,name=quiesce"`
+        // The hook to unquiesce the application
+        Unquiesce *ExecutionHook `json:"unquiesce,omitempty" protobuf:"bytes,2,opt,name=unquiesce"`
+}
+```
+
+A `QuiesceUnquiesceHook` is added to the `Container` struct.
+
+```
+// A single application container that you want to run within a pod.
+type Container struct {
+	......
+        // Defines the hook to quiesce and unquiesce an application
+        // +optional
+        QuiesceUnquiesceHook *QuiesceUnquiesceHook `json:"quiesceUnquiesceHook,omitempty" protobuf:"bytes,22,opt,name=quiesceUnquiesceHook"`
+}
+```
+
+### User Stories
+
+## Workarounds
+
+## Alternatives
+
+The user can use Annotations to define the execution hook if it is not in the
+container struct.
+
+### Risks and Mitigations
+
+## Graduation Criteria
+
+When the existing volume snapshot alpha feature goes beta, the `ExecutionHook`
+feature will become beta as well. 
+
+## Implementation History
+
+* Feature description: https://github.com/kubernetes/kubernetes/issues/177
+* VolumeSnapshotDataSource feature gate: https://github.com/kubernetes/kubernetes/pull/67087