BigData / Hadoop basics

What is checkpointing in HDFS?

Checkpointing refers to the process of combining edit log with FSImage. Secondary Namenode gets the copy of fsImage and editLog from NameNode and it consolidates the files to prepare the final FSImage file.

FsImage (final) = fsImage + editLog

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BigData / Hadoop basics

What is checkpointing in HDFS?

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