public void testStorageUsage() throws IOException {
final SimulatedFSDataset fsdataset = getSimulatedFSDataset();
assertEquals(fsdataset.getDfsUsed(), 0);
assertEquals(fsdataset.getRemaining(), fsdataset.getCapacity());
int bytesAdded = addSomeBlocks(fsdataset);
assertEquals(bytesAdded, fsdataset.getDfsUsed());
assertEquals(fsdataset.getCapacity() - bytesAdded, fsdataset.getRemaining());
}
@Test
public void testInjectionEmpty() throws IOException {
SimulatedFSDataset fsdataset = getSimulatedFSDataset();
BlockListAsLongs blockReport = fsdataset.getBlockReport(bpid);
assertEquals(0, blockReport.getNumberOfBlocks());
int bytesAdded = addSomeBlocks(fsdataset);
blockReport = fsdataset.getBlockReport(bpid);
assertEquals(NUMBLOCKS, blockReport.getNumberOfBlocks());
for (Block b : blockReport) {
assertNotNull(b);
assertEquals(blockIdToLen(b.getBlockId()), b.getNumBytes());
}
// Inject blocks into an empty fsdataset
// - injecting the blocks we got above.
SimulatedFSDataset sfsdataset = getSimulatedFSDataset();
sfsdataset.injectBlocks(bpid, blockReport);
blockReport = sfsdataset.getBlockReport(bpid);
assertEquals(NUMBLOCKS, blockReport.getNumberOfBlocks());
for (Block b : blockReport) {
assertNotNull(b);
assertEquals(blockIdToLen(b.getBlockId()), b.getNumBytes());
assertEquals(blockIdToLen(b.getBlockId()), sfsdataset.getLength(new ExtendedBlock(bpid, b)));
}
assertEquals(bytesAdded, sfsdataset.getDfsUsed());
assertEquals(sfsdataset.getCapacity() - bytesAdded, sfsdataset.getRemaining());
}
@Test
public void testInjectionNonEmpty() throws IOException {
SimulatedFSDataset fsdataset = getSimulatedFSDataset();
BlockListAsLongs blockReport = fsdataset.getBlockReport(bpid);
assertEquals(0, blockReport.getNumberOfBlocks());
int bytesAdded = addSomeBlocks(fsdataset);
blockReport = fsdataset.getBlockReport(bpid);
assertEquals(NUMBLOCKS, blockReport.getNumberOfBlocks());
for (Block b : blockReport) {
assertNotNull(b);
assertEquals(blockIdToLen(b.getBlockId()), b.getNumBytes());
}
fsdataset = null;
// Inject blocks into an non-empty fsdataset
// - injecting the blocks we got above.
SimulatedFSDataset sfsdataset = getSimulatedFSDataset();
// Add come blocks whose block ids do not conflict with
// the ones we are going to inject.
bytesAdded += addSomeBlocks(sfsdataset, NUMBLOCKS + 1);
sfsdataset.getBlockReport(bpid);
assertEquals(NUMBLOCKS, blockReport.getNumberOfBlocks());
sfsdataset.getBlockReport(bpid);
assertEquals(NUMBLOCKS, blockReport.getNumberOfBlocks());
sfsdataset.injectBlocks(bpid, blockReport);
blockReport = sfsdataset.getBlockReport(bpid);
assertEquals(NUMBLOCKS * 2, blockReport.getNumberOfBlocks());
for (Block b : blockReport) {
assertNotNull(b);
assertEquals(blockIdToLen(b.getBlockId()), b.getNumBytes());
assertEquals(blockIdToLen(b.getBlockId()), sfsdataset.getLength(new ExtendedBlock(bpid, b)));
}
assertEquals(bytesAdded, sfsdataset.getDfsUsed());
assertEquals(sfsdataset.getCapacity() - bytesAdded, sfsdataset.getRemaining());
// Now test that the dataset cannot be created if it does not have sufficient cap
conf.setLong(SimulatedFSDataset.CONFIG_PROPERTY_CAPACITY, 10);
try {
sfsdataset = getSimulatedFSDataset();
sfsdataset.addBlockPool(bpid, conf);
sfsdataset.injectBlocks(bpid, blockReport);
assertTrue("Expected an IO exception", false);
} catch (IOException e) {
// ok - as expected
}
}
public void testInvalidate() throws IOException {
final SimulatedFSDataset fsdataset = getSimulatedFSDataset();
int bytesAdded = addSomeBlocks(fsdataset);
Block[] deleteBlocks = new Block[2];
deleteBlocks[0] = new Block(1, 0, 0);
deleteBlocks[1] = new Block(2, 0, 0);
fsdataset.invalidate(bpid, deleteBlocks);
checkInvalidBlock(new ExtendedBlock(bpid, deleteBlocks[0]));
checkInvalidBlock(new ExtendedBlock(bpid, deleteBlocks[1]));
long sizeDeleted = blockIdToLen(1) + blockIdToLen(2);
assertEquals(bytesAdded - sizeDeleted, fsdataset.getDfsUsed());
assertEquals(fsdataset.getCapacity() - bytesAdded + sizeDeleted, fsdataset.getRemaining());
// Now make sure the rest of the blocks are valid
for (int i = 3; i <= NUMBLOCKS; ++i) {
Block b = new Block(i, 0, 0);
assertTrue(fsdataset.isValidBlock(new ExtendedBlock(bpid, b)));
}
}