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Posted to common-issues@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2025/08/08 16:10:00 UTC

[jira] [Commented] (HADOOP-19647) ABFS: Read Policy set in openFileOptions should be considered for enabling various optimizations

    [ https://issues.apache.org/jira/browse/HADOOP-19647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18012895#comment-18012895 ] 

Steve Loughran commented on HADOOP-19647:
-----------------------------------------

key ones are random, whole file and sequential, with recognising avro, parquet, a bonus

* parquet does now open files with "parquet" as first entry
* distcp always uses whole-file where a few large 64MB+  blocks deliver great performance

> ABFS: Read Policy set in openFileOptions should be considered for enabling various optimizations
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-19647
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19647
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 3.5.0, 3.4.1
>            Reporter: Anuj Modi
>            Assignee: Anuj Modi
>            Priority: Major
>
> AbfsInputStream should take in account the Read Policy set by user with Open File Options. Based on the read policy set, appropriate optimizations should be enabled and kicked in.



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