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HDFS-2486. Remove unnecessary priority level checks in UnderReplicatedBlocks. Contributed by Uma Maheswara Rao G 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1242636 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze 2012-02-10 02:05:38 +00:00
parent 2a2faac0de
commit dc847b39fd
2 changed files with 6 additions and 3 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -126,6 +126,9 @@ Trunk (unreleased changes)
HDFS-2786. Fix host-based token incompatibilities in DFSUtil. (Kihwal Lee
via jitendra)
HDFS-2486. Remove unnecessary priority level checks in
UnderReplicatedBlocks. (Uma Maheswara Rao G via szetszwo)
OPTIMIZATIONS
HDFS-2477. Optimize computing the diff between a block report and the
namenode state. (Tomasz Nykiel via hairong)

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/UnderReplicatedBlocks.java
View File

@ -189,7 +189,7 @@ class UnderReplicatedBlocks implements Iterable<Block> {
assert curReplicas >= 0 : "Negative replicas!";
int priLevel = getPriority(block, curReplicas, decomissionedReplicas,
expectedReplicas);
if(priLevel != LEVEL && priorityQueues.get(priLevel).add(block)) {
if(priorityQueues.get(priLevel).add(block)) {
if(NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug(
"BLOCK* NameSystem.UnderReplicationBlock.add:"
@ -292,10 +292,10 @@ class UnderReplicatedBlocks implements Iterable<Block> {
" curPri " + curPri +
" oldPri " + oldPri);
}
if(oldPri != LEVEL && oldPri != curPri) {
if(oldPri != curPri) {
remove(block, oldPri);
}
if(curPri != LEVEL && priorityQueues.get(curPri).add(block)) {
if(priorityQueues.get(curPri).add(block)) {
if(NameNode.stateChangeLog.isDebugEnabled()) {
NameNode.stateChangeLog.debug(
"BLOCK* NameSystem.UnderReplicationBlock.update:"