[jira] [Resolved] (HADOOP-19205) S3A initialization/close slower than with v1 SDK

["Steve Loughran (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-19205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HADOOP-19205.
-------------------------------------
    Fix Version/s: 3.5.0
                   3.4.1
       Resolution: Fixed

> S3A initialization/close slower than with v1 SDK
> ------------------------------------------------
>
>                 Key: HADOOP-19205
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19205
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.4.0
>            Reporter: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.5.0, 3.4.1
>
>         Attachments: Screenshot 2024-06-14 at 17.12.59.png, Screenshot 2024-06-14 at 17.14.33.png
>
>
> Hive QE have observed slowdown in LLAP queries due to time to create and close s3a filesystems instances. A key aspect of that is they keep closing the fs instances (HIVE-27884), but looking at the profiles, the reason things seem to have regressed is
> * two s3 clients are being created (sync and async)
> * these seem to take a lot of time scanning the classpath for "global interceptors", which is at least an O(jars) operation; #of index entries in the zip files may factor too.
> Proposed:
> * create async client on demand when the transfer manager is invoked
> * look at why passwords are being scanned for if InstanceProfileCredentialsProvider is in use...that seems slow too
> SDK wishes
> * SDK maybe allow us to turn off that scan for interceptors?
> attaching screenshots of the profile. storediag snippet:
> {code}
> [001]  fs.s3a.access.key = (unset)
> [002]  fs.s3a.secret.key = (unset)
> [003]  fs.s3a.session.token = (unset)
> [004]  fs.s3a.server-side-encryption-algorithm = (unset)
> [005]  fs.s3a.server-side-encryption.key = (unset)
> [006]  fs.s3a.encryption.algorithm = (unset)
> [007]  fs.s3a.encryption.key = (unset)
> [008]  fs.s3a.aws.credentials.provider = "com.amazonaws.auth.InstanceProfileCredentialsProvider" [core-site.xml]
> {code}



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