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https://issues.apache.org/jira/browse/BEAM-10706?focusedWorklogId=523273&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-523273
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ASF GitHub Bot logged work on BEAM-10706:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 11/Dec/20 18:59
Start Date: 11/Dec/20 18:59
Worklog Time Spent: 10m
Work Description: iemejia commented on pull request #12583:
URL: https://github.com/apache/beam/pull/12583#issuecomment-743367074
Merged manually to squash the commits. Thanks again @dennisylyung and don't
hesitate to contribute more in the future I will be more reactive or pass the
review to someone with more time.
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Issue Time Tracking
-------------------
Worklog Id: (was: 523273)
Time Spent: 6h 20m (was: 6h 10m)
> DynamoDBIO fail to write to the same key in short consecution
> -------------------------------------------------------------
>
> Key: BEAM-10706
> URL: https://issues.apache.org/jira/browse/BEAM-10706
> Project: Beam
> Issue Type: Bug
> Components: io-java-aws
> Affects Versions: 2.23.0
> Reporter: Dennis Yung
> Assignee: Dennis Yung
> Priority: P2
> Fix For: 2.27.0
>
> Time Spent: 6h 20m
> Remaining Estimate: 0h
>
> Internally, DynamoDBIO.Write uses the batchWriteItem method from the AWS SDK
> to sink items. However, there is a limitation in the AWS SDK that a call to
> batchWriteItem cannot contain duplicate keys.
> Currently DynamoDBIO.Write performs no key deduplication before flushing a
> batch, which could cause ValidationException: Provided list of item keys
> contains duplicates, if consecutive updates to a single key is within the
> batch size (currently hardcoded to be 25).
> To fix this bug, the batch of write requests need to be deduplicated before
> being sent to batchRequest.addRequestItemsEntry
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