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Posted to hdfs-issues@hadoop.apache.org by "Aravindan Vijayan (Jira)" <ji...@apache.org> on 2019/10/01 20:27:00 UTC
[jira] [Work started] (HDDS-2188) Implement LocatedFileStatus &
getFileBlockLocations to provide node/localization information to
Yarn/Mapreduce
[ https://issues.apache.org/jira/browse/HDDS-2188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HDDS-2188 started by Aravindan Vijayan.
-----------------------------------------------
> Implement LocatedFileStatus & getFileBlockLocations to provide node/localization information to Yarn/Mapreduce
> --------------------------------------------------------------------------------------------------------------
>
> Key: HDDS-2188
> URL: https://issues.apache.org/jira/browse/HDDS-2188
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Filesystem
> Affects Versions: 0.5.0
> Reporter: Mukul Kumar Singh
> Assignee: Aravindan Vijayan
> Priority: Major
>
> For applications like Hive/MapReduce to take advantage of the data locality in Ozone, Ozone should return the location of the Ozone blocks. This is needed for better read performance for Hadoop Applications.
> {code}
> if (file instanceof LocatedFileStatus) {
> blkLocations = ((LocatedFileStatus) file).getBlockLocations();
> } else {
> blkLocations = fs.getFileBlockLocations(file, 0, length);
> }
> {code}
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