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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13407) s3a directory housekeeping operations to be done in async thread
Date Tue, 05 Sep 2017 09:50:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Steve Loughran updated HADOOP-13407:
    Parent Issue: HADOOP-14831  (was: HADOOP-13204)

> s3a directory housekeeping operations to be done in async thread
> ----------------------------------------------------------------
>                 Key: HADOOP-13407
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13407
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Priority: Minor
> Some of the delays on s3a calls are due to cleaning up parent pseudo directories; repeated
getParent/GET calls to look for the entries, then to delete them.
> We could possibly make this asynchronous; the core semantics would be retained, just
the cleanup delayed.
> Risks?
> # while the cleanup is in progress, getFileStatus of parent dirs could imply that the
parent dir is still empty
> # failure
> of course, these risks exist today. We really need an s3a fsck

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