Hi, I'd look at stages and jobs as it's possible that the only task running is the missing one in a stage of a job. Just guessing...
Pozdrawiam, Jacek Laskowski ---- https://about.me/JacekLaskowski "The Internals Of" Online Books <https://books.japila.pl/> Follow me on https://twitter.com/jaceklaskowski <https://twitter.com/jaceklaskowski> On Thu, Jan 21, 2021 at 12:19 PM Eric Beabes <mailinglist...@gmail.com> wrote: > Hello, > > My Spark Structured Streaming application was performing well for quite > some time but all of a sudden from today it has slowed down. I noticed in > the Spark UI that the 'No. of Active Tasks' is 1 even though 64 Cores are > available. (Please see the attached image). > > I don't believe there's any data skew issue related to partitioning of > data. What could be the reason for this? Please advise. Thanks. > > > > --------------------------------------------------------------------- > To unsubscribe e-mail: user-unsubscr...@spark.apache.org
