([#121983](https://github.com/kubernetes/kubernetes/pull/121983), [@andyzhangx](https://github.com/andyzhangx))
- Client-go: Optimized leaders renewing leases by updating leader lock optimistically without getting the record from the API server first. Also, a new metric `leader_election_slowpath_total` was added to allow users to monitor how many leader elections are updated non-optimistically.

}

func (d *naughtyDisk) Close() (err error) {
	if err = d.calcError(); err != nil {
		return err
	}
	return d.disk.Close()
}

func (d *naughtyDisk) calcError() (err error) {
	d.mu.Lock()
	defer d.mu.Unlock()
	d.callNR++
	if err, ok := d.errors[d.callNR]; ok {
		return err
	}
	if d.defaultErr != nil {
		return d.defaultErr
	}
	return nil
}

package jcifs.internal.smb2.lock;

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;

import java.lang.reflect.Field;
import java.util.Arrays;

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

            @Override
            public void close() throws IOException {
                if (delegate != null) {
                    delegate.close();
                }
            }
        };
        this.lock = this.in;
    }

    private Reader transform(Reader in) throws IOException {
        if (releaseNotesJavascript == null || baseCss == null || releaseNotesCss == null) {