Kihwal Lee created HADOOP-9981:
----------------------------------

             Summary: listing in RawLocalFileSystem is inefficient
                 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
            Priority: Critical


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().



--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Reply via email to