[GitHub] [hadoop-ozone] avijayanhwx opened a new pull request #331: HDDS-2188. Implement LocatedFileStatus & getFileBlockLocations to pro…

[GitBox <gi...@apache.org>]

avijayanhwx opened a new pull request #331: HDDS-2188. Implement LocatedFileStatus & getFileBlockLocations to pro…
URL: https://github.com/apache/hadoop-ozone/pull/331
 
 
   …vide node/localization information to Yarn/Mapreduce.
   
   ## What changes were proposed in this pull request?
   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}
   
   ## What is the link to the Apache JIRA
   https://issues.apache.org/jira/browse/HDDS-2188
   
   ## How was this patch tested?
   Manually tested.

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