/** Tests {@link FileOutStream#write(byte[], int, int)}. */
@Test
public void writeTest3() throws Exception {
String uniqPath = PathUtils.uniqPath();
for (int k = MIN_LEN; k <= MAX_LEN; k += DELTA) {
for (CreateFileOptions op : getOptionSet()) {
writeTest3Util(new AlluxioURI(uniqPath + "/file_" + k + "_" + op.hashCode()), k, op);
}
}
}
/**
* Tests writing to a file for longer than HEARTBEAT_INTERVAL_MS to make sure the sessionId
* doesn't change. Tracks [ALLUXIO-171].
*/
@Test
public void longWrite() throws Exception {
AlluxioURI filePath = new AlluxioURI(PathUtils.uniqPath());
final int length = 2;
FileOutStream os =
mFileSystem.createFile(
filePath, CreateFileOptions.defaults().setWriteType(WriteType.THROUGH));
os.write((byte) 0);
Thread.sleep(Configuration.getInt(PropertyKey.USER_HEARTBEAT_INTERVAL_MS) * 2);
os.write((byte) 1);
os.close();
checkWrite(filePath, UnderStorageType.SYNC_PERSIST, length, length);
}
/** Tests writing to a file and specify the location to be localhost. */
@Test
public void writeSpecifyLocal() throws Exception {
AlluxioURI filePath = new AlluxioURI(PathUtils.uniqPath());
final int length = 2;
FileOutStream os =
mFileSystem.createFile(
filePath,
CreateFileOptions.defaults()
.setWriteType(WriteType.CACHE_THROUGH)
.setLocationPolicy(new LocalFirstPolicy()));
os.write((byte) 0);
os.write((byte) 1);
os.close();
checkWrite(filePath, UnderStorageType.SYNC_PERSIST, length, length);
}
/**
* Tests if out-of-order writes are possible. Writes could be out-of-order when the following are
* both true: - a "large" write (over half the internal buffer size) follows a smaller write. -
* the "large" write does not cause the internal buffer to overflow.
*/
@Test
public void outOfOrderWrite() throws Exception {
AlluxioURI filePath = new AlluxioURI(PathUtils.uniqPath());
FileOutStream os =
mFileSystem.createFile(
filePath, CreateFileOptions.defaults().setWriteType(WriteType.MUST_CACHE));
// Write something small, so it is written into the buffer, and not directly to the file.
os.write((byte) 0);
// A length greater than 0.5 * BUFFER_BYTES and less than BUFFER_BYTES.
int length = (BUFFER_BYTES * 3) / 4;
// Write a large amount of data (larger than BUFFER_BYTES/2, but will not overflow the buffer.
os.write(BufferUtils.getIncreasingByteArray(1, length));
os.close();
checkWrite(filePath, UnderStorageType.NO_PERSIST, length + 1, length + 1);
}