spark/performance
senior
Connecting…Data skew
When one key owns most of the data, one task becomes the stage. Salt or AQE skew join.
Explain it at my level
- Even
- Hot key
- Straggler
- Salt
Step 1 of 4
Reduce tasks
US · 25%2.1 min
EU · 12%2 min
IN · 5%2 min
BR · 3%2 min