Posted On: Feb 22, 2018
Data Integrity discusses the accuracy of the information. It is essential for us to have a guarantee or assurance that the information kept in HDFS is right. However, there is dependably a slight chance that the information will be corrupted during I/O tasks on the disks. HDFS makes the checksum for all of the information kept in touch with it and confirmed the information with the checksum during the read activity of course. Additionally, each Data-Node runs a block scanner occasionally, which checks the accuracy of the information blocks kept in the HDFS.
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