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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7811) Avoid recursive call getStoragePolicyID in INodeFile#computeQuotaUsage
Date Thu, 02 Apr 2015 13:27:19 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392482#comment-14392482

Hadoop QA commented on HDFS-7811:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision 867d5d2.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:


Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/10160//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/10160//console

This message is automatically generated.

> 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
>         Attachments: HDFS-7811.00.patch, HDFS-7811.01.patch, HDFS-7811.02.patch, HDFS-7811.03.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. 

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