Unprocessed items handling in DynamoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if there are unprocessed items after a batch write.

DynamoDB

if response.get('[1]'):
    print('There are unprocessed items.')

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

AUnprocessedItems

BItems

CProcessedItems

DBatchItems

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ProcessedItems' instead of 'UnprocessedItems'.

Checking a wrong key like 'Items' or 'BatchItems'.

The UnprocessedItems key in the response contains any items that were not processed in the batch write.

2fill in blank

medium

Complete the code to retry unprocessed items in a batch write operation.

DynamoDB

while '[1]' in response and response['[1]']:
    response = client.batch_write_item(RequestItems=response['[1]'])

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

AProcessedItems

BUnprocessedItems

CItems

DBatchItems

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ProcessedItems' which will cause an infinite loop or no retry.

Using incorrect key names like 'Items' or 'BatchItems'.

The UnprocessedItems key contains items that need to be retried in batch write operations.

3fill in blank

hard

Fix the error in the code that attempts to handle unprocessed items after a batch write.

DynamoDB

if response['[1]']:
    retry_items = response['UnprocessedItems']

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

AProcessedItems

BItems

CUnprocessedItems

DBatchItems

Attempts:

3 left

💡 Hint

Common Mistakes

Checking 'ProcessedItems' which does not exist in the response.

Using 'Items' or 'BatchItems' keys incorrectly.

The code must check the UnprocessedItems key to find items that need retrying.

4fill in blank

hard

Fill both blanks to correctly extract and retry unprocessed items in a batch write.

DynamoDB

unprocessed = response.get('[1]', {})
if unprocessed:
    response = client.batch_write_item(RequestItems=[2])

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

AUnprocessedItems

BProcessedItems

Cunprocessed

Dresponse['UnprocessedItems']

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ProcessedItems' instead of 'UnprocessedItems'.

Passing the wrong variable or expression to batch_write_item.

First, get the UnprocessedItems from the response. Then retry by passing the unprocessed items to batch_write_item.

5fill in blank

hard

Fill all three blanks to implement a loop that retries unprocessed items until all are processed.

DynamoDB

while response.get('[1]'):
    unprocessed = response['[2]']
    response = client.batch_write_item(RequestItems=[3])

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

AUnprocessedItems

BProcessedItems

Cunprocessed

Dresponse['UnprocessedItems']

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ProcessedItems' which does not exist.

Passing the wrong argument to batch_write_item.

Not looping correctly to retry all unprocessed items.

The loop continues while there are UnprocessedItems. It extracts them and retries by passing the unprocessed items to batch_write_item.