How describe Hbase column family?

Question

I am looking for a command which describes the columnfamily inside the table from the HBase Shell. I could not get any command to try this.

Answer 1

There is no command to describe the Hbase column family (which can display the column qualifiers), but I used Hue Hbase Browser, it has a smartview, which can display column qualifiers of a column family.

(It can not show all the column qualifiers of column family( like describe), but it can show a record with all the column qualifiers, which is helpful for me to understand CF) (Something is better than nothing).

You can refer this link for more information: http://gethue.com/the-web-ui-for-hbase-hbase-browser/.

NOTE: Here is a sample page screenshot, showing column qualifiers of a Column Family ("p")

If this is not helpful, you can write a Happy Script to display all the column qualifiers of a given Column Family, or you can use this API.

getFamilyMap public NavigableMap getFamilyMap(byte[] family)

Map of qualifiers to values. Returns a Map of the form: Map

Parameters:

family - column family to get

Returns: map of qualifiers to values

UPDATE #1

Recently I wrote a Java program to display the column family and column qualifiers of a hbase table. Remember, this program will do a full table scan and analyze every cell, to get the qualifier names.Might take very longer for larger tables.

Here is the link for the program.