user image

Preeti Tripathi

Job Interview Skills
English
2 years ago

Explain Block and Block Scanner in HDFS?

user image

Abhishek Mishra

2 years ago

Block Scanner is basically used to identify corrupt datanode Block. During a write operation, when a datanode writes in to the HDFS, it verifies a checksum for that data. This checksum helps in verifying the data corruptions during the data transmission.

Recent Doubts

Close [x]