Differing from write operations, reads in Bigtable: a) Must read from the commit log as well the tablet. b) Have to check a Chubby file for authorization permissions. c) Must access a merged view that combines a sequence of SSTables and the memtable. d) Can be optimized by reading from a memtable, which sits in memory, instead of reading from an SSTable.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Differing from write operations, reads in Bigtable:

a) Must read from the commit log as well the tablet.

b) Have to check a Chubby file for authorization permissions.

c) Must access a merged view that combines a sequence of SSTables and the memtable.

d) Can be optimized by reading from a memtable, which sits in memory, instead of reading from an SSTable. 

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