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HDFS-6070. Cleanup use of ReadStatistics in DFSInputStream. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1576048 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Wang 2014-03-10 19:05:10 +00:00
parent c3c267af8f
commit 3826799270
2 changed files with 5 additions and 6 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -144,6 +144,8 @@ Release 2.4.0 - UNRELEASED
HDFS-5986. Capture the number of blocks pending deletion on namenode webUI.
(cnauroth)
HDFS-6070. Cleanup use of ReadStatistics in DFSInputStream. (wang)
OPTIMIZATIONS
HDFS-5790. LeaseManager.findPath is very slow when many leases need recovery

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java
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@ -659,14 +659,11 @@ implements ByteBufferReadable, CanSetDropBehind, CanSetReadahead,
int nRead, BlockReader blockReader) {
if (nRead <= 0) return;
if (blockReader.isShortCircuit()) {
readStatistics.totalBytesRead += nRead;
readStatistics.totalLocalBytesRead += nRead;
readStatistics.totalShortCircuitBytesRead += nRead;
readStatistics.addShortCircuitBytes(nRead);
} else if (blockReader.isLocal()) {
readStatistics.totalBytesRead += nRead;
readStatistics.totalLocalBytesRead += nRead;
readStatistics.addLocalBytes(nRead);
} else {
readStatistics.totalBytesRead += nRead;
readStatistics.addRemoteBytes(nRead);
}
}