/** Pass an unreasonable split row. */
@Test
public void testPrepareWithBadSplitRow() throws IOException {
// Pass start row as split key.
SplitTransactionImpl st = new SplitTransactionImpl(this.parent, STARTROW);
assertFalse(st.prepare());
st = new SplitTransactionImpl(this.parent, HConstants.EMPTY_BYTE_ARRAY);
assertFalse(st.prepare());
st = new SplitTransactionImpl(this.parent, new byte[] {'A', 'A', 'A'});
assertFalse(st.prepare());
st = new SplitTransactionImpl(this.parent, ENDROW);
assertFalse(st.prepare());
}
@Test
public void testRollback() throws IOException {
final int rowcount = TEST_UTIL.loadRegion(this.parent, CF);
assertTrue(rowcount > 0);
int parentRowCount = TEST_UTIL.countRows(this.parent);
assertEquals(rowcount, parentRowCount);
// Start transaction.
HRegion spiedRegion = spy(this.parent);
SplitTransactionImpl st = prepareGOOD_SPLIT_ROW(spiedRegion);
SplitTransactionImpl spiedUponSt = spy(st);
doNothing()
.when(spiedUponSt)
.assertReferenceFileCount(
anyInt(), eq(parent.getRegionFileSystem().getSplitsDir(st.getFirstDaughter())));
when(spiedRegion.createDaughterRegionFromSplits(spiedUponSt.getSecondDaughter()))
.thenThrow(new MockedFailedDaughterCreation());
// Run the execute. Look at what it returns.
boolean expectedException = false;
Server mockServer = Mockito.mock(Server.class);
when(mockServer.getConfiguration()).thenReturn(TEST_UTIL.getConfiguration());
try {
spiedUponSt.execute(mockServer, null);
} catch (MockedFailedDaughterCreation e) {
expectedException = true;
}
assertTrue(expectedException);
// Run rollback
assertTrue(spiedUponSt.rollback(null, null));
// Assert I can scan parent.
int parentRowCount2 = TEST_UTIL.countRows(this.parent);
assertEquals(parentRowCount, parentRowCount2);
// Assert rollback cleaned up stuff in fs
assertTrue(!this.fs.exists(HRegion.getRegionDir(this.testdir, st.getFirstDaughter())));
assertTrue(!this.fs.exists(HRegion.getRegionDir(this.testdir, st.getSecondDaughter())));
assertTrue(!this.parent.lock.writeLock().isHeldByCurrentThread());
// Now retry the split but do not throw an exception this time.
assertTrue(st.prepare());
PairOfSameType<Region> daughters = st.execute(mockServer, null);
// Count rows. daughters are already open
int daughtersRowCount = 0;
for (Region openRegion : daughters) {
try {
int count = TEST_UTIL.countRows(openRegion);
assertTrue(count > 0 && count != rowcount);
daughtersRowCount += count;
} finally {
HBaseTestingUtility.closeRegionAndWAL(openRegion);
}
}
assertEquals(rowcount, daughtersRowCount);
// Assert the write lock is no longer held on parent
assertTrue(!this.parent.lock.writeLock().isHeldByCurrentThread());
assertTrue("Rollback hooks should be called.", wasRollBackHookCalled());
}
/** Pass a reference store */
@Test
public void testPrepareWithRegionsWithReference() throws IOException {
HStore storeMock = Mockito.mock(HStore.class);
when(storeMock.hasReferences()).thenReturn(true);
when(storeMock.getFamily()).thenReturn(new HColumnDescriptor("cf"));
when(storeMock.close()).thenReturn(ImmutableList.<StoreFile>of());
this.parent.stores.put(Bytes.toBytes(""), storeMock);
SplitTransactionImpl st = new SplitTransactionImpl(this.parent, GOOD_SPLIT_ROW);
assertFalse(
"a region should not be splittable if it has instances of store file references",
st.prepare());
}
/** Test SplitTransactionListener */
@Test
public void testSplitTransactionListener() throws IOException {
SplitTransactionImpl st = new SplitTransactionImpl(this.parent, GOOD_SPLIT_ROW);
SplitTransaction.TransactionListener listener =
Mockito.mock(SplitTransaction.TransactionListener.class);
st.registerTransactionListener(listener);
st.prepare();
Server mockServer = Mockito.mock(Server.class);
when(mockServer.getConfiguration()).thenReturn(TEST_UTIL.getConfiguration());
PairOfSameType<Region> daughters = st.execute(mockServer, null);
verify(listener)
.transition(
st,
SplitTransaction.SplitTransactionPhase.STARTED,
SplitTransaction.SplitTransactionPhase.PREPARED);
verify(listener, times(15))
.transition(
any(SplitTransaction.class),
any(SplitTransaction.SplitTransactionPhase.class),
any(SplitTransaction.SplitTransactionPhase.class));
verifyNoMoreInteractions(listener);
}
@Test
public void testPrepareWithClosedRegion() throws IOException {
this.parent.close();
SplitTransactionImpl st = new SplitTransactionImpl(this.parent, GOOD_SPLIT_ROW);
assertFalse(st.prepare());
}
private SplitTransactionImpl prepareGOOD_SPLIT_ROW(final HRegion parentRegion)
throws IOException {
SplitTransactionImpl st = new SplitTransactionImpl(parentRegion, GOOD_SPLIT_ROW);
assertTrue(st.prepare());
return st;
}