HBase data model (column families) in Hadoop - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a column family in HBase table creation.

Hadoop

create 'my_table', '[1]'

Drag options to blanks, or click blank then click option'

A'value'

B'rowkey'

C'column1'

D'cf1'

Attempts:

3 left

💡 Hint

Common Mistakes

Using row key or column qualifier names instead of column family names.

Omitting the quotes around the column family name.

In HBase, column families are defined during table creation using their names like 'cf1'.

2fill in blank

medium

Complete the code to add a new column family to an existing HBase table.

Hadoop

alter '[1]', 'cf2'

Drag options to blanks, or click blank then click option'

A'new_table'

B'my_table'

C'cf1'

D'row1'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a column family name instead of the table name in the alter command.

Using a non-existent table name.

The 'alter' command modifies an existing table, so the table name must be correct.

3fill in blank

hard

Fix the error in the HBase shell command to create a table with two column families.

Hadoop

create 'test_table', '[1]', 'cf2'

Drag options to blanks, or click blank then click option'

A'cf1'

B'cf1', 'cf3'

Ccf1

D'cf1 cf3'

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the column family name.

Combining multiple column families into one string.

Each column family must be a separate quoted string. The correct syntax is to list them as separate quoted strings.

4fill in blank

hard

Fill both blanks to define a table with two column families 'cf1' and 'cf2' in HBase shell.

Hadoop

create 'my_table', [1], [2]

Drag options to blanks, or click blank then click option'

A'cf1'

B'cf2'

C'cf3'

D'cf4'

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect column family names.

Combining column families into one string.

The create command requires each column family as a separate quoted string.

5fill in blank

hard

Fill all three blanks to create a table 'sales' with column families 'info', 'data', and 'metrics'.

Hadoop

create '[1]', [2], [3], 'metrics'

Drag options to blanks, or click blank then click option'

A'sales'

B'info'

C'data'

D'metrics'

Attempts:

3 left

💡 Hint

Common Mistakes

Placing column families in the wrong order.

Not quoting the table name or column families.

The table name is the first argument, followed by each column family as separate quoted strings.