BigData / Hadoop basics

Difference between fsImage and editLog file.

fsImage file contains all the information about modifications/changes made across the cluster ever since the nameNode was started. It is stored in HardDisk memory.

editLog also has metadata about modifications however it has only recent changes (usually past 1 hour). It is maitained in RAM.

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BigData / Hadoop basics

Difference between fsImage and editLog file.

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