HLog and WAL in Hbase.

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What are HLog and WAL in HBase?
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Jul 16, 2018 in Database by shams
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All edits in the HStore are stored in the HLog. Every region server has one HLog. HLog contains entries for edits of all regions performed by a particular Region Server.WAL abbreviates to Write Ahead Log (WAL) in which all the HLog edits are written immediately.WAL edits remain in the memory till the flush period in case of deferred log flush.

answered Jul 16, 2018 by Data_Nerd
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