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Posted to common-commits@hadoop.apache.org by ar...@apache.org on 2016/02/22 20:47:28 UTC

[09/50] [abbrv] hadoop git commit: HADOOP-12810. FileSystem#listLocatedStatus causes unnecessary RPC calls (Contributed by Ryan Blue)

HADOOP-12810. FileSystem#listLocatedStatus causes unnecessary RPC calls (Contributed by Ryan Blue)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/96ea3094
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/96ea3094
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/96ea3094

Branch: refs/heads/HDFS-1312
Commit: 96ea3094315bb1e1a5e268e3817c7fdedc3e9462
Parents: 77ba5ad
Author: Vinayakumar B <vi...@apache.org>
Authored: Wed Feb 17 10:13:41 2016 +0530
Committer: Vinayakumar B <vi...@apache.org>
Committed: Wed Feb 17 10:13:41 2016 +0530

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 hadoop-common-project/hadoop-common/CHANGES.txt                  | 3 +++
 .../src/main/java/org/apache/hadoop/fs/FileSystem.java           | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/96ea3094/hadoop-common-project/hadoop-common/CHANGES.txt
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diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 1a2b32f..0aa39d9 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -1720,6 +1720,9 @@ Release 2.7.3 - UNRELEASED
 
   OPTIMIZATIONS
 
+    HADOOP-12810. FileSystem#listLocatedStatus causes unnecessary RPC calls
+    (Ryan Blue via vinayakumarb)
+
   BUG FIXES
 
     HADOOP-12296. when setnetgrent returns 0 in linux, exception should be

http://git-wip-us.apache.org/repos/asf/hadoop/blob/96ea3094/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
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diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
index 920c5a6..f4a2e7d 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
@@ -1749,8 +1749,10 @@ public abstract class FileSystem extends Configured implements Closeable {
           throw new NoSuchElementException("No more entries in " + f);
         }
         FileStatus result = stats[i++];
+        // for files, use getBlockLocations(FileStatus, int, int) to avoid
+        // calling getFileStatus(Path) to load the FileStatus again
         BlockLocation[] locs = result.isFile() ?
-            getFileBlockLocations(result.getPath(), 0, result.getLen()) :
+            getFileBlockLocations(result, 0, result.getLen()) :
             null;
         return new LocatedFileStatus(result, locs);
       }