[ https://issues.apache.org/jira/browse/HADOOP-11785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zoran Dimitrijevic updated HADOOP-11785: ---------------------------------------- Attachment: HADOOP-11827-02.patch Slight change to handle all exceptions in worker to handle occasional unexpected non-io exceptions. {color:green}+1 overall{color}. {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 4 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}. 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 3.0.1) warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. > Reduce number of listStatus operation in distcp buildListing() > -------------------------------------------------------------- > > Key: HADOOP-11785 > URL: https://issues.apache.org/jira/browse/HADOOP-11785 > Project: Hadoop Common > Issue Type: Improvement > Components: tools/distcp > Affects Versions: 3.0.0 > Reporter: Zoran Dimitrijevic > Assignee: Zoran Dimitrijevic > Priority: Minor > Fix For: 2.8.0 > > Attachments: distcp-liststatus.patch, distcp-liststatus2.patch > > Original Estimate: 1h > Remaining Estimate: 1h > > Distcp was taking long time in copyListing.buildListing() for large source > trees (I was using source of 1.5M files in a tree of about 50K directories). > For input at s3 buildListing was taking more than one hour. I've noticed a > performance bug in the current code which does listStatus twice for each > directory which doubles number of RPCs in some cases (if most directories do > not contain >1000 files). > -- This message was sent by Atlassian JIRA (v6.3.4#6332)