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https://issues.apache.org/jira/browse/HADOOP-13936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16642279#comment-16642279
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Steve Loughran commented on HADOOP-13936:
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+ bulk operation needs to handle failure of delete call as it updates S3guard
with only those changes which went through
filter array passed to bulk deletes to only those which worked
immediate delete then complete call before throwing up the failure
> S3Guard: DynamoDB can go out of sync with S3AFileSystem::delete operation
> -------------------------------------------------------------------------
>
> Key: HADOOP-13936
> URL: https://issues.apache.org/jira/browse/HADOOP-13936
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.0.0-beta1, 3.1.0, 3.1.1
> Reporter: Rajesh Balamohan
> Assignee: Steve Loughran
> Priority: Blocker
>
> As a part of {{S3AFileSystem.delete}} operation {{innerDelete}} is invoked,
> which deletes keys from S3 in batches (default is 1000). But DynamoDB is
> updated only at the end of this operation. This can cause issues when
> deleting large number of keys.
> E.g, it is possible to get exception after deleting 1000 keys and in such
> cases dynamoDB would not be updated. This can cause DynamoDB to go out of
> sync.
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