hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7811) Avoid recursive call getStoragePolicyID in INodeFile#computeQuotaUsage
Date Thu, 12 Mar 2015 16:48:39 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Xiaoyu Yao updated HDFS-7811:
    Status: Patch Available  (was: Open)

> Avoid recursive call getStoragePolicyID in INodeFile#computeQuotaUsage
> ----------------------------------------------------------------------
>                 Key: HDFS-7811
>                 URL: https://issues.apache.org/jira/browse/HDFS-7811
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>             Fix For: 2.7.0
>         Attachments: HDFS-7811.00.patch
> This is a follow up based on comment from [~jingzhao] on HDFS-7723. 
> I just noticed that INodeFile#computeQuotaUsage calls getStoragePolicyID to identify
the storage policy id of the file. This may not be very efficient (especially when we're computing
the quota usage of a directory) because getStoragePolicyID may recursively check the ancestral
INode's storage policy. I think here an improvement can be passing the lowest parent directory's
storage policy down while traversing the tree. 

This message was sent by Atlassian JIRA

View raw message