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HDFS-14523. Remove excess read lock for NetworkToplogy. Contributed by Wu Weiwei.

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Signed-off-by: Wei-Chiu Chuang <weichiu@apache.org>
Reviewed-by: Chen Liang <cliang@apache.org>
(cherry picked from commit 971a4c8e8328a4bdea65de4a0e84c82b5b2de24b)
This commit is contained in:
Wei-Chiu Chuang 2019-08-16 17:19:13 -07:00
parent ab7ecd6a0f
commit 41c0757a1f
1 changed files with 2 additions and 12 deletions
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14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java
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@ -295,22 +295,12 @@ public String getRack(String loc) {
/** @return the total number of racks */
public int getNumOfRacks() {
netlock.readLock().lock();
try {
return numOfRacks;
} finally {
netlock.readLock().unlock();
}
return numOfRacks;
}
/** @return the total number of leaf nodes */
public int getNumOfLeaves() {
netlock.readLock().lock();
try {
return clusterMap.getNumOfLeaves();
} finally {
netlock.readLock().unlock();
}
return clusterMap.getNumOfLeaves();
}
/** Return the distance between two nodes