Shard sizing strategy in Elasticsearch - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the number of shards to 5 in the index settings.

Elasticsearch

{
  "settings": {
    "number_of_shards": [1]
  }
}

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

A10

B1

C3

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Setting number_of_shards to 1 when more shards are needed for scaling.

Using a very high number like 10 without reason.

The number_of_shards setting defines how many primary shards an index has. Setting it to 5 creates 5 shards.

2fill in blank

medium

Complete the code to set the shard size limit to 50GB using the index.routing.allocation.total_shards_per_node setting.

Elasticsearch

{
  "settings": {
    "index.routing.allocation.total_shards_per_node": [1]
  }
}

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

A"5"

B"50"

C"20"

D"10"

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing shard count with shard size.

Setting the value too high causing large shards.

The index.routing.allocation.total_shards_per_node setting limits how many shards can be allocated per node. Setting it to 5 helps control shard size indirectly.

3fill in blank

hard

Fix the error in the shard size calculation formula to estimate shard size correctly.

Elasticsearch

shard_size_gb = total_index_size_gb [1] number_of_shards

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

A*

B+

C/

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using multiplication instead of division.

Using addition or subtraction which are incorrect here.

To estimate the size of each shard, divide the total index size by the number of shards.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps each shard to its size if the size is less than 30GB.

Elasticsearch

shard_sizes = {shard: size[1] 2 for shard, size in shards.items() if size [2] 30}

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

A**

B>

C<

D//

Attempts:

3 left

💡 Hint

Common Mistakes

Using > instead of < in the condition.

Using multiplication instead of exponentiation.

The ** 2 squares the size, and the condition < 30 filters shards smaller than 30GB.

5fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps uppercase shard names to their sizes if size is greater than 20GB.

Elasticsearch

filtered_shards = {shard[1]: size for shard, size in shards.items() if size [2] 20}

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

A.upper()

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using < instead of > in the condition.

Adding extra characters to size.

Use .upper() to convert shard names to uppercase, keep size as is, and filter sizes greater than 20GB.