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Hadoop · Q31

NoSQL Databases with HBase

Programming · Hadoop · question 31

Q31

In HBase, what is the purpose of the HBase Write-Ahead Log (WAL)?

A.
Join records from multiple tables
B.
Group records based on a condition
C.
Record changes to data before they are applied to the HBase table
Answer
D.
Sort records based on a column

Answer: Option C

Solution

Answer: Option C
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