/**
* Creates a new local tachyon master with a isolated home and port.
*
* @throws IOException when unable to do file operation or listen on port
* @return an instance of Tachyon master
*/
public static LocalTachyonMaster create() throws IOException {
final String tachyonHome = uniquePath();
TachyonConf tachyonConf = MasterContext.getConf();
UnderFileSystemUtils.deleteDir(tachyonHome, tachyonConf);
UnderFileSystemUtils.mkdirIfNotExists(tachyonHome, tachyonConf);
// Update Tachyon home in the passed TachyonConf instance.
tachyonConf.set(Constants.TACHYON_HOME, tachyonHome);
return new LocalTachyonMaster(tachyonHome);
}
private LocalTachyonMaster(final String tachyonHome) throws IOException {
mTachyonHome = tachyonHome;
TachyonConf tachyonConf = MasterContext.getConf();
mHostname = NetworkAddressUtils.getConnectHost(ServiceType.MASTER_RPC, tachyonConf);
// To start the UFS either for integration or unit test. If it targets the unit test, UFS is
// setup over the local file system (see also {@link LocalFilesystemCluster} - under folder of
// "mTachyonHome/tachyon*". Otherwise, it starts some distributed file system cluster e.g.,
// miniDFSCluster (see also {@link tachyon.LocalMiniDFScluster} and setup the folder like
// "hdfs://xxx:xxx/tachyon*".
mUnderFSCluster = UnderFileSystemCluster.get(mTachyonHome + "/dfs", tachyonConf);
mUnderFSFolder = mUnderFSCluster.getUnderFilesystemAddress() + "/tachyon_underfs_folder";
// To setup the journalFolder under either local file system or distributed ufs like
// miniDFSCluster
mJournalFolder = mUnderFSCluster.getUnderFilesystemAddress() + "/journal";
UnderFileSystemUtils.mkdirIfNotExists(mJournalFolder, tachyonConf);
String[] masterServiceNames =
new String[] {
Constants.BLOCK_MASTER_SERVICE_NAME,
Constants.FILE_SYSTEM_MASTER_SERVICE_NAME,
Constants.RAW_TABLE_MASTER_SERVICE_NAME,
};
for (String masterServiceName : masterServiceNames) {
UnderFileSystemUtils.mkdirIfNotExists(
PathUtils.concatPath(mJournalFolder, masterServiceName), tachyonConf);
}
UnderFileSystemUtils.touch(
mJournalFolder + "/_format_" + System.currentTimeMillis(), tachyonConf);
tachyonConf.set(Constants.MASTER_JOURNAL_FOLDER, mJournalFolder);
tachyonConf.set(Constants.UNDERFS_ADDRESS, mUnderFSFolder);
tachyonConf.set(Constants.MASTER_MIN_WORKER_THREADS, "1");
tachyonConf.set(Constants.MASTER_MAX_WORKER_THREADS, "100");
// If tests fail to connect they should fail early rather than using the default ridiculously
// high retries
tachyonConf.set(Constants.MASTER_RETRY_COUNT, "3");
// Since tests are always running on a single host keep the resolution timeout low as otherwise
// people running with strange network configurations will see very slow tests
tachyonConf.set(Constants.HOST_RESOLUTION_TIMEOUT_MS, "250");
tachyonConf.set(Constants.WEB_THREAD_COUNT, "1");
tachyonConf.set(
Constants.WEB_RESOURCES,
PathUtils.concatPath(System.getProperty("user.dir"), "../servers/src/main/webapp"));
mTachyonMaster = TachyonMaster.Factory.createMaster();
// Reset the master port
tachyonConf.set(Constants.MASTER_PORT, Integer.toString(getRPCLocalPort()));
Runnable runMaster =
new Runnable() {
@Override
public void run() {
try {
mTachyonMaster.start();
} catch (Exception e) {
throw new RuntimeException(e + " \n Start Master Error \n" + e.getMessage(), e);
}
}
};
mMasterThread = new Thread(runMaster);
}
/**
* Creates a new local tachyon master with a isolated port.
*
* @param tachyonHome Tachyon home directory, if the directory already exists, this method will
* reuse any directory/file if possible, no deletion will be made
* @return an instance of Tachyon master
* @throws IOException when unable to do file operation or listen on port
*/
public static LocalTachyonMaster create(final String tachyonHome) throws IOException {
TachyonConf tachyonConf = MasterContext.getConf();
UnderFileSystemUtils.mkdirIfNotExists(tachyonHome, tachyonConf);
return new LocalTachyonMaster(Preconditions.checkNotNull(tachyonHome));
}