[jira] [Updated] (HADOOP-17215) ABFS: Excessive Create Overwrites leads to race conditions

["Sneha Vijayarajan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-17215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sneha Vijayarajan updated HADOOP-17215:
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    Summary: ABFS: Excessive Create Overwrites leads to race conditions  (was: ABFS: Excessive Create overwrites leading to unnecessary extra transactions)

> ABFS: Excessive Create Overwrites leads to race conditions
> ----------------------------------------------------------
>
>                 Key: HADOOP-17215
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17215
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Sneha Vijayarajan
>            Assignee: Sneha Vijayarajan
>            Priority: Major
>
> Filesystem Create APIs that do not accept an argument for overwrite flag end up defaulting it to true. 
> We are observing that request count of creates with overwrite=true is more and primarily because of the default setting of the flag is true of the called Create API. When a create with overwrite ends up timing out, we have observed that it could lead to race conditions between the first create and retried one running almost parallel.
> To avoid this scenario for create with overwrite=true request, ABFS driver will always attempt to create without overwrite. If the create fails due to fileAlreadyPresent, it will resend the request with overwrite=true. 
>  
>  
>  



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