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Posted to common-dev@hadoop.apache.org by "Surendra Singh Lilhore (Jira)" <ji...@apache.org> on 2021/07/10 09:41:00 UTC
[jira] [Resolved] (HADOOP-17596) ABFS: Change default Readahead
Queue Depth from num(processors) to const
[ https://issues.apache.org/jira/browse/HADOOP-17596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Surendra Singh Lilhore resolved HADOOP-17596.
---------------------------------------------
Fix Version/s: 3.3.2
Resolution: Fixed
> ABFS: Change default Readahead Queue Depth from num(processors) to const
> ------------------------------------------------------------------------
>
> Key: HADOOP-17596
> URL: https://issues.apache.org/jira/browse/HADOOP-17596
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.1
> Reporter: Sumangala Patki
> Assignee: Sumangala Patki
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0, 3.3.2
>
> Time Spent: 4.5h
> Remaining Estimate: 0h
>
> The default value of readahead queue depth is currently set to the number of available processors. However, this can result in one inputstream instance consuming more processor time. To ensure equal thread allocation during read for all inputstreams created in a session, we change the default readahead queue depth to a constant (2).
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