@Test
public void testWriteAheadLog() throws Exception {
final MutableInt flushCount = new MutableInt();
final MutableBoolean isClosed = new MutableBoolean(false);
LogicalPlan dag = new LogicalPlan();
dag.setAttribute(LogicalPlan.APPLICATION_PATH, testMeta.dir);
dag.setAttribute(OperatorContext.STORAGE_AGENT, new FSStorageAgent(testMeta.dir, null));
TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class);
StreamingContainerManager scm = new StreamingContainerManager(dag);
PhysicalPlan plan = scm.getPhysicalPlan();
Journal j = scm.getJournal();
ByteArrayOutputStream bos =
new ByteArrayOutputStream() {
@Override
public void flush() throws IOException {
super.flush();
flushCount.increment();
}
@Override
public void close() throws IOException {
super.close();
isClosed.setValue(true);
}
};
j.setOutputStream(new DataOutputStream(bos));
PTOperator o1p1 = plan.getOperators(dag.getMeta(o1)).get(0);
assertEquals(PTOperator.State.PENDING_DEPLOY, o1p1.getState());
String externalId = new MockContainer(scm, o1p1.getContainer()).container.getExternalId();
assertEquals("flush count", 1, flushCount.intValue());
o1p1.setState(PTOperator.State.ACTIVE);
assertEquals(PTOperator.State.ACTIVE, o1p1.getState());
assertEquals("flush count", 2, flushCount.intValue());
assertEquals("is closed", false, isClosed.booleanValue());
// this will close the stream. There are 2 calls to flush() during the close() - one in Kryo
// Output and one
// in FilterOutputStream
j.setOutputStream(null);
assertEquals("flush count", 4, flushCount.intValue());
assertEquals("is closed", true, isClosed.booleanValue());
// output stream is closed, so state will be changed without recording it in the journal
o1p1.setState(PTOperator.State.INACTIVE);
assertEquals(PTOperator.State.INACTIVE, o1p1.getState());
assertEquals("flush count", 4, flushCount.intValue());
ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
j.replay(new DataInputStream(bis));
assertEquals(PTOperator.State.ACTIVE, o1p1.getState());
InetSocketAddress addr1 = InetSocketAddress.createUnresolved("host1", 1);
PTContainer c1 = plan.getContainers().get(0);
c1.setState(PTContainer.State.ALLOCATED);
c1.host = "host1";
c1.bufferServerAddress = addr1;
c1.setAllocatedMemoryMB(2);
c1.setRequiredMemoryMB(1);
c1.setAllocatedVCores(3);
c1.setRequiredVCores(4);
j.setOutputStream(new DataOutputStream(bos));
j.write(c1.getSetContainerState());
c1.setExternalId(null);
c1.setState(PTContainer.State.NEW);
c1.setExternalId(null);
c1.host = null;
c1.bufferServerAddress = null;
bis = new ByteArrayInputStream(bos.toByteArray());
j.replay(new DataInputStream(bis));
assertEquals(externalId, c1.getExternalId());
assertEquals(PTContainer.State.ALLOCATED, c1.getState());
assertEquals("host1", c1.host);
assertEquals(addr1, c1.bufferServerAddress);
assertEquals(1, c1.getRequiredMemoryMB());
assertEquals(2, c1.getAllocatedMemoryMB());
assertEquals(3, c1.getAllocatedVCores());
assertEquals(4, c1.getRequiredVCores());
j.write(scm.getSetOperatorProperty("o1", "maxTuples", "100"));
o1.setMaxTuples(10);
j.setOutputStream(null);
bis = new ByteArrayInputStream(bos.toByteArray());
j.replay(new DataInputStream(bis));
assertEquals(100, o1.getMaxTuples());
j.setOutputStream(new DataOutputStream(bos));
scm.setOperatorProperty("o1", "maxTuples", "10");
assertEquals(10, o1.getMaxTuples());
o1.setMaxTuples(100);
assertEquals(100, o1.getMaxTuples());
j.setOutputStream(null);
bis = new ByteArrayInputStream(bos.toByteArray());
j.replay(new DataInputStream(bis));
assertEquals(10, o1.getMaxTuples());
j.setOutputStream(new DataOutputStream(bos));
scm.setPhysicalOperatorProperty(o1p1.getId(), "maxTuples", "50");
}