HBase Shell command questions

Question

I have some questions about HBase Shell Command Tool:

1: How to list all column family names (just names!) in a table?
2: How to count the number of rows in a column family?

Answer 1

1: How to list all column family names (just names!) in a table?

Not possible OOTB. But you could do something like this :

echo "scan 'table'" | bin/hbase shell | awk -F'=' '{print $2}' | awk -F ':' '{print $1}'

2: How to count the number of rows in a column family?

What do you mean by this? Do you intend to ask How to count the number of column families in a rows? If this is what you need, try this :

echo "scan 'table'" | bin/hbase shell | grep cf | wc -l