You can use the Export MR job provided with HBase, it lets you set a time range: http://hbase.apache.org/book.html#export
J-D On Mon, May 6, 2013 at 10:27 AM, Gaurav Pandit <[email protected]>wrote: > Hi Hbase users, > > We have a use case where we need to know how data looked at a given time in > past. > > The data is stored in HBase of course, with multiple versions. And, the > goal is to be able to extractall records (rowkey, columns) as of a given > timestamp, to a file. > > > I am trying to figure out the best way to achieve this. > > The options I know are: > 1. Write a *Java* client using HBase Java API, and scan the hbase table. > 2. Do the same, but over *Thrift* HBase API using Perl (since > our environment is mostly Perl). > 3. Use *Hive *to point to HBase table, and use Sqoop to extract data from > the Hive table and onto client / RDBMS. > 4. Use *Pig *to extract data from HBase table and dump it on HDFS and move > the file over to the client. > > So far, I have successfully implemented option (2). I am still running some > tests to see how it performs, but it works fine as such. > > My questions are: > 1. Is option (3) or (4) even possible? I am not sure if we can access the > table for a given timestamp over Pig or Hive. > 2. Is there any other better way of achieving this? > > > Thanks! > Gaurav >
