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HDFS-5665. Remove the unnecessary writeLock while initializing CacheManager in FsNameSystem Ctor. (Uma Maheswara Rao G via Andrew Wang) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1551270 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Wang 2013-12-16 17:12:55 +00:00
parent 1dabd42999
commit 6c641339d1
2 changed files with 4 additions and 6 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -256,6 +256,9 @@ Trunk (Unreleased)
OPTIMIZATIONS OPTIMIZATIONS
HDFS-5349. DNA_CACHE and DNA_UNCACHE should be by blockId only. (cmccabe) HDFS-5349. DNA_CACHE and DNA_UNCACHE should be by blockId only. (cmccabe)
HDFS-5665. Remove the unnecessary writeLock while initializing CacheManager
in FsNameSystem Ctor. (Uma Maheswara Rao G via Andrew Wang)
BUG FIXES BUG FIXES
HADOOP-9635 Fix potential Stack Overflow in DomainSocket.c (V. Karthik Kumar HADOOP-9635 Fix potential Stack Overflow in DomainSocket.c (V. Karthik Kumar
via cmccabe) via cmccabe)

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -735,12 +735,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
this.dtSecretManager = createDelegationTokenSecretManager(conf); this.dtSecretManager = createDelegationTokenSecretManager(conf);
this.dir = new FSDirectory(fsImage, this, conf); this.dir = new FSDirectory(fsImage, this, conf);
this.snapshotManager = new SnapshotManager(dir); this.snapshotManager = new SnapshotManager(dir);
writeLock();
try {
this.cacheManager = new CacheManager(this, conf, blockManager); this.cacheManager = new CacheManager(this, conf, blockManager);
} finally {
writeUnlock();
}
this.safeMode = new SafeModeInfo(conf); this.safeMode = new SafeModeInfo(conf);
this.auditLoggers = initAuditLoggers(conf); this.auditLoggers = initAuditLoggers(conf);
this.isDefaultAuditLogger = auditLoggers.size() == 1 && this.isDefaultAuditLogger = auditLoggers.size() == 1 &&