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Posted to common-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2013/09/25 22:46:04 UTC
[jira] [Commented] (HADOOP-9981) globStatus should minimize its
listStatus and getFileStatus calls
[ https://issues.apache.org/jira/browse/HADOOP-9981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13778055#comment-13778055 ]
Hadoop QA commented on HADOOP-9981:
-----------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12605058/HADOOP-9981.003.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author tags.
{color:green}+1 tests included{color}. The patch appears to include 1 new or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any 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 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/3123//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/3123//console
This message is automatically generated.
> globStatus should minimize its listStatus and getFileStatus calls
> -----------------------------------------------------------------
>
> Key: HADOOP-9981
> URL: https://issues.apache.org/jira/browse/HADOOP-9981
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.3.0
> Reporter: Kihwal Lee
> Assignee: Colin Patrick McCabe
> Priority: Critical
> Attachments: HADOOP-9981.001.patch, HADOOP-9981.002.patch, HADOOP-9981.003.patch
>
>
> After HADOOP-9652, listStatus() or globStatus() calls against a local file system directory is very slow. A user was loading data from local file system to Hive and it took about 30 seconds. The same operation took less than a second pre-HADOOP-9652.
> The input path had many other files beside the input files and strace showed that fork & exec of stat against each and every one of them. jstack confirmed that this was being done from getNativeFileLinkStatus().
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