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HDFS-6545. Finalizing rolling upgrade can make NN unavailable for a long duration. Contributed by Kihwal Lee. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1603239 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Kihwal Lee 2014-06-17 17:58:38 +00:00
parent 6e37dd331b
commit 2298f3d241
2 changed files with 11 additions and 2 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -449,6 +449,9 @@ Release 2.5.0 - UNRELEASED
HDFS-6528. Add XAttrs to TestOfflineImageViewer. (Stephen Chu via wang)
HDFS-6545. Finalizing rolling upgrade can make NN unavailable for a long
duration. (kihwal)
OPTIMIZATIONS
HDFS-6214. Webhdfs has poor throughput for files >2GB (daryn)

10
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -7639,14 +7639,20 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
returnInfo = finalizeRollingUpgradeInternal(now());
getEditLog().logFinalizeRollingUpgrade(returnInfo.getFinalizeTime());
getFSImage().saveNamespace(this);
if (haEnabled) {
// roll the edit log to make sure the standby NameNode can tail
getFSImage().rollEditLog();
}
getFSImage().renameCheckpoint(NameNodeFile.IMAGE_ROLLBACK,
NameNodeFile.IMAGE);
} finally {
writeUnlock();
}
// getEditLog().logSync() is not needed since it does saveNamespace
if (!haEnabled) {
// Sync not needed for ha since the edit was rolled after logging.
getEditLog().logSync();
}
if (auditLog.isInfoEnabled() && isExternalInvocation()) {
logAuditEvent(true, "finalizeRollingUpgrade", null, null, null);