Question-40: Please order the following in the form of read path for Cassandra?

1. Check partition key cache
2. Check Row Cache
3. Locate the data on disk using compression offset map
4. Fetch the data from SSTables on disk
5. Go directly to the compression offset map if a partition key is found in the partition key cache.
6. Check memtable.
7. Check Bloom filter.

1. 1,2,3,4,5,6,7
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Ans: B

Exp: You should always keep in mind that first it will check the memtables and last one would be SSTables on disk this would help in reducing the given choices. Below are the order which would be followed when data needs to be read from the Cassandra table.

1. Check memtable.

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