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https://issues.apache.org/jira/browse/HADOOP-16202?focusedWorklogId=758586&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-758586
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ASF GitHub Bot logged work on HADOOP-16202:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 19/Apr/22 15:59
Start Date: 19/Apr/22 15:59
Worklog Time Spent: 10m
Work Description: steveloughran commented on code in PR #2584:
URL: https://github.com/apache/hadoop/pull/2584#discussion_r853241725
##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/impl/FutureIOSupport.java:
##########
@@ -136,56 +129,39 @@ private FutureIOSupport() {
* @param <U> type of builder
* @return the builder passed in.
*/
+ @Deprecated
Review Comment:
FutureIOSupport is private fs.impl, tagged private unstable. only FS
implementations should be using it. I've just made sure there are no refs in
our own code, so it's only needed to ensure that third party code still links
Issue Time Tracking
-------------------
Worklog Id: (was: 758586)
Time Spent: 20h (was: 19h 50m)
> Enhance openFile() for better read performance against object stores
> ---------------------------------------------------------------------
>
> Key: HADOOP-16202
> URL: https://issues.apache.org/jira/browse/HADOOP-16202
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs, fs/s3, tools/distcp
> Affects Versions: 3.3.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20h
> Remaining Estimate: 0h
>
> The {{openFile()}} builder API lets us add new options when reading a file
> Add an option {{"fs.s3a.open.option.length"}} which takes a long and allows
> the length of the file to be declared. If set, *no check for the existence of
> the file is issued when opening the file*
> Also: withFileStatus() to take any FileStatus implementation, rather than
> only S3AFileStatus -and not check that the path matches the path being
> opened. Needed to support viewFS-style wrapping and mounting.
> and Adopt where appropriate to stop clusters with S3A reads switched to
> random IO from killing download/localization
> * fs shell copyToLocal
> * distcp
> * IOUtils.copy
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