@Test
public void testSubmitToKeyOwnerCallable() throws Exception {
final int k = simpleTestNodeCount;
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(k);
final HazelcastInstance[] instances = factory.newInstances(new Config());
final AtomicInteger count = new AtomicInteger(0);
final CountDownLatch latch = new CountDownLatch(k / 2);
final ExecutionCallback callback =
new ExecutionCallback() {
public void onResponse(Object response) {
if ((Boolean) response) count.incrementAndGet();
latch.countDown();
}
public void onFailure(Throwable t) {}
};
for (int i = 0; i < k; i++) {
final HazelcastInstance instance = instances[i];
final IExecutorService service = instance.getExecutorService("testSubmitToKeyOwnerCallable");
final String script = "hazelcast.getCluster().getLocalMember().equals(member)";
final HashMap map = new HashMap();
final Member localMember = instance.getCluster().getLocalMember();
map.put("member", localMember);
int key = 0;
while (!localMember.equals(instance.getPartitionService().getPartition(++key).getOwner())) ;
if (i % 2 == 0) {
final Future f = service.submitToKeyOwner(new ScriptCallable(script, map), key);
assertTrue((Boolean) f.get(5, TimeUnit.SECONDS));
} else {
service.submitToKeyOwner(new ScriptCallable(script, map), key, callback);
}
}
assertTrue(latch.await(30, TimeUnit.SECONDS));
assertEquals(k / 2, count.get());
}
public FlushResult call() throws Exception {
// For each measure and each star, ask the index
// which headers intersect.
final List<SegmentHeader> headers = new ArrayList<SegmentHeader>();
final List<Member> measures = CacheControlImpl.findMeasures(region);
final SegmentColumn[] flushRegion = CacheControlImpl.findAxisValues(region);
final List<RolapStar> starList = CacheControlImpl.getStarList(region);
for (Member member : measures) {
if (!(member instanceof RolapStoredMeasure)) {
continue;
}
final RolapStoredMeasure storedMeasure = (RolapStoredMeasure) member;
final RolapStar star = storedMeasure.getCube().getStar();
final SegmentCacheIndex index = cacheMgr.indexRegistry.getIndex(star);
headers.addAll(
index.intersectRegion(
member.getDimension().getSchema().getName(),
((RolapSchema) member.getDimension().getSchema()).getChecksum(),
storedMeasure.getCube().getName(),
storedMeasure.getName(),
storedMeasure.getCube().getStar().getFactTable().getAlias(),
flushRegion));
}
// If flushRegion is empty, this means we must clear all
// segments for the region's measures.
if (flushRegion.length == 0) {
for (final SegmentHeader header : headers) {
for (RolapStar star : starList) {
cacheMgr.indexRegistry.getIndex(star).remove(header);
}
// Remove the segment from external caches. Use an
// executor, because it may take some time. We discard
// the future, because we don't care too much if it fails.
cacheControlImpl.trace(
"discard segment - it cannot be constrained and maintain consistency:\n"
+ header.getDescription());
final Future<?> task =
cacheMgr.cacheExecutor.submit(
new Runnable() {
public void run() {
try {
// Note that the SegmentCache API doesn't
// require us to verify that the segment
// exists (by calling "contains") before we
// call "remove".
cacheMgr.compositeCache.remove(header);
} catch (Throwable e) {
LOGGER.warn("remove header failed: " + header, e);
}
}
});
Util.safeGet(task, "SegmentCacheManager.flush");
}
return new FlushResult(Collections.<Callable<Boolean>>emptyList());
}
// Now we know which headers intersect. For each of them,
// we append an excluded region.
//
// TODO: Optimize the logic here. If a segment is mostly
// empty, we should trash it completely.
final List<Callable<Boolean>> callableList = new ArrayList<Callable<Boolean>>();
for (final SegmentHeader header : headers) {
if (!header.canConstrain(flushRegion)) {
// We have to delete that segment altogether.
cacheControlImpl.trace(
"discard segment - it cannot be constrained and maintain consistency:\n"
+ header.getDescription());
for (RolapStar star : starList) {
cacheMgr.indexRegistry.getIndex(star).remove(header);
}
continue;
}
final SegmentHeader newHeader = header.constrain(flushRegion);
for (final SegmentCacheWorker worker : cacheMgr.segmentCacheWorkers) {
callableList.add(
new Callable<Boolean>() {
public Boolean call() throws Exception {
boolean existed;
if (worker.supportsRichIndex()) {
final SegmentBody sb = worker.get(header);
existed = worker.remove(header);
if (sb != null) {
worker.put(newHeader, sb);
}
} else {
// The cache doesn't support rich index. We
// have to clear the segment entirely.
existed = worker.remove(header);
}
return existed;
}
});
}
for (RolapStar star : starList) {
SegmentCacheIndex index = cacheMgr.indexRegistry.getIndex(star);
index.remove(header);
index.add(newHeader, false, null);
}
}
// Done
return new FlushResult(callableList);
}