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https://issues.apache.org/jira/browse/HADOOP-17215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mukund Thakur resolved HADOOP-17215.
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Resolution: Fixed
> ABFS: Support for conditional overwrite
> ---------------------------------------
>
> Key: HADOOP-17215
> URL: https://issues.apache.org/jira/browse/HADOOP-17215
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.0
> Reporter: Sneha Vijayarajan
> Assignee: Sneha Vijayarajan
> Priority: Major
> Labels: abfsactive
> Fix For: 3.4.0, 3.3.1
>
>
> 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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