Also check out this blog post for a detailed explanation of ACID in HBase: http://hadoop-hbase.blogspot.com/2012/03/acid-in-hbase.html
________________________________ From: tsuna <[email protected]> To: Steve Berg <[email protected]> Cc: HBase users <[email protected]> Sent: Saturday, February 16, 2013 4:48 PM Subject: Re: HBase and Data Integrity bcc: asynchbase@ On Sat, Feb 16, 2013 at 12:28 PM, Steve Berg <[email protected]> wrote: > I have some questions for HBase DB: Hi Steve, I'm moving this thread to the HBase user mailing list. > How to ensure data integrity? Data stored by HBase in HDFS has 3 replicas of the data and checksums. > Are there methods ensure the integrity? It's all built-in, I'm not sure what you meant by "methods" here. > Does HBase primary key? or alternatives HBase has only one primary key per table. You may wanna look at the HBase Book, Chapter 5. "Data Model": http://hbase.apache.org/book.html#datamodel > Foreign key? No. > Referential Integrity? No. > How are the ACID properties to be implemented? http://hbase.apache.org/acid-semantics.html -- Benoit "tsuna" Sigoure
