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Explain what is wal and hlog in hbase?

Question Posted / gaurang raman


Explain what is wal and hlog in hbase?..

Answer / Bheem Singh

In Apache HBase, WAL (Write Ahead Log) is a log used to write all mutations before they are written to the HFile. HLog serves as a sequential file that maintains a record of all events such as writes, deletes, and compactions. It helps in recovery operations.

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