What happens when Block Scanner finds a faulty data block?
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What happens when Block Scanner finds a faulty data block?
First, DataNode alerts NameNode. Then, NameNode creates a new replica using the corrupted block as a starting point.
The goal is to align the replication factor with the replication count of the proper replicas. If a match is discovered, the corrupted data block won’t be removed.