Is the hadith of the pond of Khumm authentic? If so, what is the sunni view on it?

In this hadith of the pond of Khumm, it shows that Ali is shown to be said that he is the master of whom the Prophet was the master of: > O people, Allah the Most Kind the Omniscient has told me that no > apostle lives to more than half the age of him who had preceded him. I > think I am about to be called (to die) and thus I must respond. I am > responsible and you are responsible, then what do you say?' They said, > 'We witness that you have informed, advised and striven. May Allah > bless you.' He said, 'Do you not bear witness that there is no god but > Allah and that Muhammad is His servant and Apostle, and that His > Heaven is true, His Hell is true, death is true, the Resurrection > after death is true, that there is no doubt that the Day of Judgment > will come, and that Allah will resurrect the dead from their graves?' > They said, 'Yes, we bear witness.' He said, 'O Allah, bear witness.' > Then he said, 'O people, Allah is my Lord and I am the lord of the > believers. I am worthier of believers than themselves. Of whomsoever I > had been Master (Mawla), Ali here is to be his Master.[a] O Allah, be > a supporter of whoever supports him (Ali) and an enemy of whoever > opposes him and divert the Truth to Ali.' If it is, what is Sunni view on it because Shia believe it to be the Prophet choosing Ali to be his successor.