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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13936) S3Guard: DynamoDB can go out of sync with S3AFileSystem::delete operation
Date Fri, 01 Sep 2017 13:56:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-13936:
------------------------------------
    Parent Issue: HADOOP-14825  (was: HADOOP-13345)

> 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
>            Reporter: Rajesh Balamohan
>            Priority: Minor
>
> 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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