/**
* @param name URI passed to constructor.
* @param cfg Configuration passed to constructor.
* @throws IOException If initialization failed.
*/
@SuppressWarnings("ConstantConditions")
private void initialize(URI name, Configuration cfg) throws IOException {
enterBusy();
try {
if (rmtClient != null)
throw new IOException("File system is already initialized: " + rmtClient);
A.notNull(name, "name");
A.notNull(cfg, "cfg");
if (!IGFS_SCHEME.equals(name.getScheme()))
throw new IOException(
"Illegal file system URI [expected="
+ IGFS_SCHEME
+ "://[name]/[optional_path], actual="
+ name
+ ']');
uriAuthority = name.getAuthority();
// Override sequential reads before prefetch if needed.
seqReadsBeforePrefetch =
parameter(cfg, PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH, uriAuthority, 0);
if (seqReadsBeforePrefetch > 0) seqReadsBeforePrefetchOverride = true;
// In Ignite replication factor is controlled by data cache affinity.
// We use replication factor to force the whole file to be stored on local node.
dfltReplication = (short) cfg.getInt("dfs.replication", 3);
// Get file colocation control flag.
colocateFileWrites = parameter(cfg, PARAM_IGFS_COLOCATED_WRITES, uriAuthority, false);
preferLocFileWrites = cfg.getBoolean(PARAM_IGFS_PREFER_LOCAL_WRITES, false);
// Get log directory.
String logDirCfg = parameter(cfg, PARAM_IGFS_LOG_DIR, uriAuthority, DFLT_IGFS_LOG_DIR);
File logDirFile = U.resolveIgnitePath(logDirCfg);
String logDir = logDirFile != null ? logDirFile.getAbsolutePath() : null;
rmtClient = new HadoopIgfsWrapper(uriAuthority, logDir, cfg, LOG, user);
// Handshake.
IgfsHandshakeResponse handshake = rmtClient.handshake(logDir);
grpBlockSize = handshake.blockSize();
IgfsPaths paths = handshake.secondaryPaths();
Boolean logEnabled = parameter(cfg, PARAM_IGFS_LOG_ENABLED, uriAuthority, false);
if (handshake.sampling() != null ? handshake.sampling() : logEnabled) {
// Initiate client logger.
if (logDir == null) throw new IOException("Failed to resolve log directory: " + logDirCfg);
Integer batchSize =
parameter(cfg, PARAM_IGFS_LOG_BATCH_SIZE, uriAuthority, DFLT_IGFS_LOG_BATCH_SIZE);
clientLog = IgfsLogger.logger(uriAuthority, handshake.igfsName(), logDir, batchSize);
} else clientLog = IgfsLogger.disabledLogger();
try {
modeRslvr = new IgfsModeResolver(paths.defaultMode(), paths.pathModes());
} catch (IgniteCheckedException ice) {
throw new IOException(ice);
}
boolean initSecondary = paths.defaultMode() == PROXY;
if (!initSecondary && paths.pathModes() != null) {
for (T2<IgfsPath, IgfsMode> pathMode : paths.pathModes()) {
IgfsMode mode = pathMode.getValue();
if (mode == PROXY) {
initSecondary = true;
break;
}
}
}
if (initSecondary) {
try {
factory = (HadoopFileSystemFactory) paths.getPayload(getClass().getClassLoader());
} catch (IgniteCheckedException e) {
throw new IOException("Failed to get secondary file system factory.", e);
}
if (factory == null)
throw new IOException(
"Failed to get secondary file system factory (did you set "
+ IgniteHadoopIgfsSecondaryFileSystem.class.getName()
+ " as \"secondaryFIleSystem\" in "
+ FileSystemConfiguration.class.getName()
+ "?)");
assert factory != null;
if (factory instanceof LifecycleAware) ((LifecycleAware) factory).start();
try {
FileSystem secFs = factory.get(user);
secondaryUri = secFs.getUri();
A.ensure(secondaryUri != null, "Secondary file system uri should not be null.");
} catch (IOException e) {
throw new IOException(
"Failed to connect to the secondary file system: " + secondaryUri, e);
}
}
} finally {
leaveBusy();
}
}
/**
* Gets cached or creates a {@link FileSystem}.
*
* @return The secondary file system.
*/
private FileSystem secondaryFileSystem() throws IOException {
assert factory != null;
return factory.get(user);
}