spark-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jacek Laskowski <>
Subject Re: Only one Active task in Spark Structured Streaming application
Date Thu, 21 Jan 2021 11:25:00 GMT

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...

Jacek Laskowski
"The Internals Of" Online Books <>
Follow me on


On Thu, Jan 21, 2021 at 12:19 PM Eric Beabes <>

> 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:

View raw message