// Tests that space will be allocated when possible
@Test
public void requestSpaceTest() throws Exception {
final long blockId1 = 12345L;
final long blockId2 = 12346L;
final int chunkSize = (int) WORKER_CAPACITY_BYTES / 10;
mBlockWorkerServiceHandler.requestBlockLocation(SESSION_ID, blockId1, chunkSize);
boolean result = mBlockWorkerServiceHandler.requestSpace(SESSION_ID, blockId1, chunkSize);
// Initial request and first additional request should succeed
Assert.assertTrue(result);
result = mBlockWorkerServiceHandler.requestSpace(SESSION_ID, blockId1, WORKER_CAPACITY_BYTES);
// Impossible request should fail
Assert.assertFalse(result);
// Request for space on a nonexistent block should fail
Assert.assertFalse(mBlockWorkerServiceHandler.requestSpace(SESSION_ID, blockId2, chunkSize));
// Request for impossible initial space should fail
Exception exception = null;
try {
mBlockWorkerServiceHandler.requestBlockLocation(
SESSION_ID, blockId2, WORKER_CAPACITY_BYTES + 1);
} catch (AlluxioTException e) {
exception = e;
}
Assert.assertNotNull(exception);
}
// Tests that multiple users cannot request a combined space greater than worker space
@Test
public void totalOverCapacityRequestSpaceTest() throws Exception {
final int chunkSize = (int) WORKER_CAPACITY_BYTES / 2;
final long userId1 = SESSION_ID;
final long userId2 = SESSION_ID + 1;
final long blockId1 = 12345L;
final long blockId2 = 23456L;
String filePath1 =
mBlockWorkerServiceHandler.requestBlockLocation(userId1, blockId1, chunkSize);
String filePath2 =
mBlockWorkerServiceHandler.requestBlockLocation(userId2, blockId2, chunkSize);
// Initial requests should succeed
Assert.assertTrue(filePath1 != null);
Assert.assertTrue(filePath2 != null);
// Additional requests for space should fail
Assert.assertFalse(mBlockWorkerServiceHandler.requestSpace(userId1, blockId1, chunkSize));
Assert.assertFalse(mBlockWorkerServiceHandler.requestSpace(userId2, blockId2, chunkSize));
}