placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left)...

## Introduction to 1.9.0

Kubernetes version 1.9 includes new features and enhancements, as well as fixes to identified issues. The release notes contain a brief overview of the important changes introduced in this release. The content is organized by Special Interest Group ([SIG](https://github.com/kubernetes/community/blob/master/sig-list.md)).

## Urgent Upgrade Notes
### (No, really, you MUST do this before you upgrade)

Before upgrading to Kubernetes 1.11, you must keep the following in mind:

mechanism to beta, adding alpha support for a new CSI driver registry as well as for topology, and adding a number of alpha features to support the use of CSI for “local ephemeral volumes” (that is, volumes that exist for the lifecycle of a pod and contain some injected information, like a token or secret).

With Kubernetes v1.12, SIG Storage also introduced alpha support for [volume snapshotting](https://github.com/kubernetes/enhancements/issues/177). This feature introduces the ability...

### Other (Cleanup or Flake)

- When retrieving event resources, the reportingController and reportingInstance fields in the event will contain values. ([#120067](https://github.com/kubernetes/kubernetes/pull/120067), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Instrumentation]

## Dependencies

### Added
_Nothing has changed._

- EndpointSlice should not contain endpoints for terminating pods ([#89056](https://github.com/kubernetes/kubernetes/pull/89056), [@andrewsykim](https://github.com/andrewsykim)) [SIG Apps and Network]

* Allow Secret & ConfigMap keys to contain caps, dots, and underscores ([#25458](https://github.com/kubernetes/kubernetes/pull/25458), [@errm](https://github.com/errm))

			if err != nil {
				// Parent may be "virtual" (for ldap, oidc, client tls auth,
				// custom auth plugin), so in such cases we apply no parent
				// policy. The session token will contain info about policy to
				// be applied.
				if !errors.Is(err, errNoSuchUser) {
					replLogOnceIf(ctx,
						fmt.Errorf("Unable to heal temporary credentials from peer site %s -> %s : %w", latestPeerName, peerName, err),

contents of the Program, including, for purposes of clarity any new file
in Source Code form that contains any contents of the Program. Modified
Works shall not include works that contain only declarations,
interfaces, types, classes, structures, or files of the Program solely
in each case in order to link to, bind by name, or subclass the Program
or Modified Works thereof.

### Other (Cleanup or Flake)

- When retrieving event resources, the reportingController and reportingInstance fields in the event will contain values. ([#120065](https://github.com/kubernetes/kubernetes/pull/120065), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Instrumentation]

## Dependencies

### Added
_Nothing has changed._

### Changed