[jira] [Resolved] (HADOOP-19559) S3A: Analytics accelerator for S3 to be enabled by default

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

     [ https://issues.apache.org/jira/browse/HADOOP-19559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HADOOP-19559.
-------------------------------------
    Fix Version/s: 3.4.3
         Assignee: Ahmar Suhail
       Resolution: Fixed

> S3A: Analytics accelerator for S3 to be enabled by default
> ----------------------------------------------------------
>
>                 Key: HADOOP-19559
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19559
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs/s3
>    Affects Versions: 3.5.0, 3.4.2
>            Reporter: Ahmar Suhail
>            Assignee: Ahmar Suhail
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.3
>
>
> Make "analytics" the default input stream in S3A. 
> Goals
> * Parquet performance through applications running queries over the data (spark etc)
> * Performance for other formats good as/better than today. Examples: avro manifests in iceberg, ORC in hive/spark
> * Performance for other uses as good as today (whole-file/sequential reads of parquet data in distcp etc)
> * better resilience to bad uses (incomplete reads not retaining http streams, buffer allocations on long-retained data)
> * efficient on applications like Impala, which caches parquet footers itself, and uses unbuffer() to discard all stream-side resources. Maybe just throw alway all state on unbuffer() and stop trying to be sophisticated, or support some new openFile flag which can be used to disable footer parsing



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