What is speculative execution in Hadoop?

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Tags

1. #running
2. #launches
3. #hadoop
4. #tasks
5. #called
6. #instead
7. #speculative
8. #tries
9. #process
10. #slower
11. #execution
12. #detect
13. #backup
14. #diagnose
15. #equivalent
16. #another
17. #expected
18. #apache