// Tests that lock block returns the correct path
@Test
public void lockBlockTest() throws Exception {
final int blockSize = (int) WORKER_CAPACITY_BYTES / 2;
CreateFileOptions options =
CreateFileOptions.defaults()
.setBlockSizeBytes(blockSize)
.setWriteType(WriteType.MUST_CACHE);
FileOutStream out = mFileSystem.createFile(new AlluxioURI("/testFile"), options);
URIStatus file = mFileSystem.getStatus(new AlluxioURI("/testFile"));
final long blockId = BlockId.createBlockId(BlockId.getContainerId(file.getFileId()), 0);
out.write(BufferUtils.getIncreasingByteArray(blockSize));
out.close();
String localPath = mBlockWorkerServiceHandler.lockBlock(blockId, SESSION_ID).getBlockPath();
// The local path should exist
Assert.assertNotNull(localPath);
UnderFileSystem ufs = UnderFileSystem.get(localPath, mMasterConfiguration);
byte[] data = new byte[blockSize];
int bytesRead = ufs.open(localPath).read(data);
// The data in the local file should equal the data we wrote earlier
Assert.assertEquals(blockSize, bytesRead);
Assert.assertTrue(BufferUtils.equalIncreasingByteArray(bytesRead, data));
mBlockWorkerServiceHandler.unlockBlock(blockId, SESSION_ID);
}
// Tests that lock block returns error on failure
@Test
public void lockBlockFailureTest() throws Exception {
mFileSystem.createFile(new AlluxioURI("/testFile"));
URIStatus file = mFileSystem.getStatus(new AlluxioURI("/testFile"));
final long blockId = BlockId.createBlockId(BlockId.getContainerId(file.getFileId()), 0);
Exception exception = null;
try {
mBlockWorkerServiceHandler.lockBlock(blockId, SESSION_ID);
} catch (AlluxioTException e) {
exception = e;
}
// A file does not exist exception should have been thrown
Assert.assertNotNull(exception);
}