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Explain what happens if you alter the block size of a column family on an already occupied database?

Question Posted / satish kumar


Explain what happens if you alter the block size of a column family on an already occupied database?..

Answer / Vinay Kumar Dubey

When you change the block size of a column family in an already occupied HBase database, it triggers a compaction process. This compaction reorganizes the data blocks to adjust to the new block size. During this process, data might be moved around, and temporary resources are used, which could impact performance briefly.

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