Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

  1. Categories >> Software >> Big Data >> Hadoop >> Apache HBase
  2. Suggest New Category

Explain about hlog and wal in hbase.

Question Posted / aakash agrawal


Explain about hlog and wal in hbase...

Answer / Ritu Brijpal Saini

In HBase, HLog (Write Ahead Log) is a file used for storing writes that have been acknowledged but not yet committed. WAL files are used to ensure data durability by allowing recovery from failures. When a RegionServer fails, it can replay the HLog files to recover lost data. Write Ahead Logs are merged into memstores and sent to HDFS.

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More Apache HBase Interview Questions

what are the key components of hbase?

1 Answers  

Define the difference between hive and hbase?

1 Answers  

explain apache hbase?

1 Answers  

What are the filters are available in apache hbase?

1 Answers  

Explain how does hbase actually delete a row?

1 Answers  

What is the use of ycsb?

1 Answers  

What is HBase Shell?

1 Answers  

What is the meaning of compaction in hbase?

1 Answers  

What is HBaseFsck class?

1 Answers  

What is the use of exists command?

1 Answers  

Which filter accepts the page size as the parameter in HBase?

1 Answers  

What services run after running hbase job?

1 Answers  

For more Apache HBase Interview Questions Click Here
Categories