[
https://issues.apache.org/jira/browse/HADOOP-17250?focusedWorklogId=619039&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-619039
]
ASF GitHub Bot logged work on HADOOP-17250:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 06/Jul/21 11:06
Start Date: 06/Jul/21 11:06
Worklog Time Spent: 10m
Work Description: mukund-thakur merged pull request #3110:
URL: https://github.com/apache/hadoop/pull/3110
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
Issue Time Tracking
-------------------
Worklog Id: (was: 619039)
Time Spent: 5h 20m (was: 5h 10m)
> ABFS: Random read perf improvement
> ----------------------------------
>
> Key: HADOOP-17250
> URL: https://issues.apache.org/jira/browse/HADOOP-17250
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.0
> Reporter: Sneha Vijayarajan
> Assignee: Mukund Thakur
> Priority: Major
> Labels: abfsactive, pull-request-available
> Fix For: 3.3.2
>
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> Random read if marginally read ahead was seen to improve perf for a TPCH
> query.
>
> Introducing fs.azure.readahead.range parameter which can be set by user.
> Data will be populated in buffer for random reads as well which leads to
> lesser
> remote calls.
> This patch also changes the seek implementation to perform a lazy seek. Actual
> seek is done when a read is initiated and data is not present in buffer else
> date is returned from buffer thus reducing the number of remote calls.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
