Hbase中的行数，其中列具有特定值

Question

I am using hbase to store my data in hdfs, I have a column family with user_details in my table where I am storing user values like-

userdetails-> userid ->"ui011"
userdetails-> userName->"John"
userdetails-> emailid->"john@xyz.com"

Now is it possible to count the rows which have particular value in username and email id, both through java and hbase shell. I am kind of new to hbase and any help will be appreciated.

Answer 1

Take a look at Hbase coprocessor AggregationClient . AggregationClient docs

Example usage: row-count-hbase-aggregation-example