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HDFS-16244.Add the necessary write lock in Checkpointer#doCheckpoint(). (#3497)

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jianghuazhu 2021-10-13 17:21:03 +08:00 committed by GitHub
parent 8c271caa81
commit ff24fe6197
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1 changed files with 8 additions and 3 deletions
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11
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/Checkpointer.java
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@ -244,9 +244,14 @@ void doCheckpoint() throws IOException {
if(needReloadImage) {
LOG.info("Loading image with txid " + sig.mostRecentCheckpointTxId);
File file = bnStorage.findImageFile(NameNodeFile.IMAGE,
sig.mostRecentCheckpointTxId);
bnImage.reloadFromImageFile(file, backupNode.getNamesystem());
backupNode.namesystem.writeLock();
try {
File file = bnStorage.findImageFile(NameNodeFile.IMAGE,
sig.mostRecentCheckpointTxId);
bnImage.reloadFromImageFile(file, backupNode.getNamesystem());
} finally {
backupNode.namesystem.writeUnlock();
}
}
rollForwardByApplyingLogs(manifest, bnImage, backupNode.getNamesystem());
}