Mixing
Delete items from DynamoDB by type
I have a DynamoDB table with a TTL set on one of the attributes. However when I started ingesting data into the table I accidentally was entering the attribute as a string instead of an integer. This is ignored by the TTL and my records were never being deleted.
After a while I noticed my error and updated the code and the table ceased growing in size as records were being removed as designed. However I still have a few hundred thousand records in the table with the string TTL.
What is the best way for me to delete these records?
amazon-dynamodb
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
add a comment |
I have a DynamoDB table with a TTL set on one of the attributes. However when I started ingesting data into the table I accidentally was entering the attribute as a string instead of an integer. This is ignored by the TTL and my records were never being deleted.
After a while I noticed my error and updated the code and the table ceased growing in size as records were being removed as designed. However I still have a few hundred thousand records in the table with the string TTL.
What is the best way for me to delete these records?
amazon-dynamodb
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
add a comment |
I have a DynamoDB table with a TTL set on one of the attributes. However when I started ingesting data into the table I accidentally was entering the attribute as a string instead of an integer. This is ignored by the TTL and my records were never being deleted.
After a while I noticed my error and updated the code and the table ceased growing in size as records were being removed as designed. However I still have a few hundred thousand records in the table with the string TTL.
What is the best way for me to delete these records?
amazon-dynamodb
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
I have a DynamoDB table with a TTL set on one of the attributes. However when I started ingesting data into the table I accidentally was entering the attribute as a string instead of an integer. This is ignored by the TTL and my records were never being deleted.
After a while I noticed my error and updated the code and the table ceased growing in size as records were being removed as designed. However I still have a few hundred thousand records in the table with the string TTL.
What is the best way for me to delete these records?
amazon-dynamodb
amazon-dynamodb
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
asked Nov 19 '18 at 16:23
Jacob Tomlinson
1,59021946
1,59021946
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
I've written a script in python with boto3 which scans the whole table, gets the keys for items with string TTL attributes and deletes them. However deleting the ~500k items seems to be rather slow. So any other answers would be much appreciated.
import boto3
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('my-table')
response = table.scan()
data = response['Items']
while 'LastEvaluatedKey' in response:
response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])
data.extend(response['Items'])
string_keys = [item['key'] for item in data if type(item['ttl']) == str]
with table.batch_writer() as batch:
for key in string_keys:
batch.delete_item(
Key={
'key': key
},
)
string_keys.remove(key)
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
1
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I've written a script in python with boto3 which scans the whole table, gets the keys for items with string TTL attributes and deletes them. However deleting the ~500k items seems to be rather slow. So any other answers would be much appreciated.
import boto3
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('my-table')
response = table.scan()
data = response['Items']
while 'LastEvaluatedKey' in response:
response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])
data.extend(response['Items'])
string_keys = [item['key'] for item in data if type(item['ttl']) == str]
with table.batch_writer() as batch:
for key in string_keys:
batch.delete_item(
Key={
'key': key
},
)
string_keys.remove(key)
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
1
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
add a comment |
I've written a script in python with boto3 which scans the whole table, gets the keys for items with string TTL attributes and deletes them. However deleting the ~500k items seems to be rather slow. So any other answers would be much appreciated.
import boto3
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('my-table')
response = table.scan()
data = response['Items']
while 'LastEvaluatedKey' in response:
response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])
data.extend(response['Items'])
string_keys = [item['key'] for item in data if type(item['ttl']) == str]
with table.batch_writer() as batch:
for key in string_keys:
batch.delete_item(
Key={
'key': key
},
)
string_keys.remove(key)
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
1
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
add a comment |
I've written a script in python with boto3 which scans the whole table, gets the keys for items with string TTL attributes and deletes them. However deleting the ~500k items seems to be rather slow. So any other answers would be much appreciated.
import boto3
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('my-table')
response = table.scan()
data = response['Items']
while 'LastEvaluatedKey' in response:
response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])
data.extend(response['Items'])
string_keys = [item['key'] for item in data if type(item['ttl']) == str]
with table.batch_writer() as batch:
for key in string_keys:
batch.delete_item(
Key={
'key': key
},
)
string_keys.remove(key)
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
I've written a script in python with boto3 which scans the whole table, gets the keys for items with string TTL attributes and deletes them. However deleting the ~500k items seems to be rather slow. So any other answers would be much appreciated.
import boto3
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('my-table')
response = table.scan()
data = response['Items']
while 'LastEvaluatedKey' in response:
response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])
data.extend(response['Items'])
string_keys = [item['key'] for item in data if type(item['ttl']) == str]
with table.batch_writer() as batch:
for key in string_keys:
batch.delete_item(
Key={
'key': key
},
)
string_keys.remove(key)
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
edited Nov 19 '18 at 16:57
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
answered Nov 19 '18 at 16:43
Jacob Tomlinson
1,59021946
1,59021946
1
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
add a comment |
1
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
1
1
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
This is your only way, unless you don't care about any of the data in the table, then just drop an recreate the table. Increase your provisioned write and/or read capacity to make it go faster,
– cementblocks
Nov 19 '18 at 21:42
add a comment |
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