File addBlock(Block b, File f) throws IOException {
File blockDir = DatanodeUtil.idToBlockDir(finalizedDir, b.getBlockId());
if (!blockDir.exists()) {
if (!blockDir.mkdirs()) {
throw new IOException("Failed to mkdirs " + blockDir);
}
}
File blockFile = FsDatasetImpl.moveBlockFiles(b, f, blockDir);
File metaFile = FsDatasetUtil.getMetaFile(blockFile, b.getGenerationStamp());
dfsUsage.incDfsUsed(b.getNumBytes() + metaFile.length());
return blockFile;
}
void addToReplicasMap(
ReplicaMap volumeMap,
File dir,
final RamDiskReplicaTracker lazyWriteReplicaMap,
boolean isFinalized)
throws IOException {
File files[] = FileUtil.listFiles(dir);
for (File file : files) {
if (file.isDirectory()) {
addToReplicasMap(volumeMap, file, lazyWriteReplicaMap, isFinalized);
}
if (isFinalized && FsDatasetUtil.isUnlinkTmpFile(file)) {
throw new RuntimeException("未实现");
}
if (!Block.isBlockFilename(file)) continue;
long genStamp = FsDatasetUtil.getGenerationStampFromFile(files, file);
long blockId = Block.filename2id(file.getName());
ReplicaInfo newReplica = null;
if (isFinalized) {
newReplica =
new FinalizedReplica(blockId, file.length(), genStamp, volume, file.getParentFile());
} else {
boolean loadRwr = true;
File restartMeta =
new File(file.getParent() + File.pathSeparator + "." + file.getName() + ".restart");
try {
if (!restartMeta.delete()) {
FsDatasetImpl.LOG.warn("Failed to delete restart meta file: " + restartMeta.getPath());
}
} finally {
}
if (loadRwr) {
LOG.error("未实现");
continue;
}
}
ReplicaInfo oldReplica = volumeMap.get(bpid, newReplica.getBlockId());
if (oldReplica == null) {
volumeMap.add(bpid, newReplica);
} else {
throw new RuntimeException("未实现");
}
if (newReplica.getVolume().isTransientStorage()) {
throw new RuntimeException("未实现");
} else {
lazyWriteReplicaMap.discardReplica(bpid, blockId, false);
}
}
}
File createRbwFile(Block b) throws IOException {
File f = new File(rbwDir, b.getBlockName());
return DatanodeUtil.createTmpFile(b, f);
}