Shuffling: What it is and why it's important

[@pratikkawalgikar4839]

The concept is now clear for me after searching all over the net from last 3 months. Thanks a lot. Your videos are very simple to understand. Please upload more on spark as I have finished watching all your videos and they are simply superb.

[@JohnDoe-zc4mu]

Holy cow, u explained in 12min something I had to understand in 1 hour from other videos.

[@sunitareddy8717]

Your explanation is amazing which I couldn't get even spending hrs.

[@ManikantGoutamReal]

this is god-level video. thanks a lot.

[@mateusznowakowski6805]

Great video

[@tianyuez]

Very clear. Thx

[@bres6486]

At most one key value pair per id per node (not key value pair per node as far as I understand) after using the reduceByKey().

[@aneksingh4496]

Please keep posting new videos on spark and scala ... Your videos are awesome 👍

[@Manapoker1]

thx you for this video, it helps a lot!

[@narendernegi7493]

Amazing.

[@DatNguyen-ry1vr]

Gold!!

[@avsbharadwaj8190]

why there is no mapper side optimisation for the groupByKey operation?

[@anujlovetube]

Very good tutorial. Hats off to you.

[@李大雷-e5t]

非常好的教程，感谢。

[@soulboy2223]

我也觉得

[@AdityaKumar-yu2kv]

Awesome explanation... Thank you so much to explain concepts very clearly

[@jacobkim9856]

Best

[@thetravelshot]

commenting for the UA-cam algorithm

[@saqibawan3588]

Outstanding
Ma'm will you please notes of your lectures...