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How does bloom filter help in searching rows?

Question Posted / vijay kumar


How does bloom filter help in searching rows?..

Answer / Manish Kumar Verma

Bloom filters are used in HBase to optimize row-level lookups. They provide a probabilistic data structure that can quickly determine whether an element (in this case, a row key) might be present in a larger set (the table). However, false positives are possible, so if a Bloom filter indicates a row is present, you should always verify the result by fetching the actual data.

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