private void recheck() {
// If this is the oldest node.
if (oldestNode.get().id().equals(cctx.localNodeId())) {
Collection<UUID> remaining = remaining();
if (!remaining.isEmpty()) {
try {
cctx.io()
.safeSend(
cctx.discovery().nodes(remaining),
new GridDhtPartitionsSingleRequest(exchId),
SYSTEM_POOL,
null);
} catch (IgniteCheckedException e) {
U.error(
log,
"Failed to request partitions from nodes [exchangeId="
+ exchId
+ ", nodes="
+ remaining
+ ']',
e);
}
}
// Resend full partition map because last attempt failed.
else {
if (spreadPartitions()) onDone(exchId.topologyVersion());
}
} else sendPartitions();
// Schedule another send.
scheduleRecheck();
}
/**
* Sends query request.
*
* @param fut Distributed future.
* @param req Request.
* @param nodes Nodes.
* @throws IgniteCheckedException In case of error.
*/
@SuppressWarnings("unchecked")
private void sendRequest(
final GridCacheDistributedQueryFuture<?, ?, ?> fut,
final GridCacheQueryRequest req,
Collection<ClusterNode> nodes)
throws IgniteCheckedException {
assert fut != null;
assert req != null;
assert nodes != null;
final UUID locNodeId = cctx.localNodeId();
ClusterNode locNode = null;
Collection<ClusterNode> rmtNodes = null;
for (ClusterNode n : nodes) {
if (n.id().equals(locNodeId)) locNode = n;
else {
if (rmtNodes == null) rmtNodes = new ArrayList<>(nodes.size());
rmtNodes.add(n);
}
}
// Request should be sent to remote nodes before the query is processed on the local node.
// For example, a remote reducer has a state, we should not serialize and then send
// the reducer changed by the local node.
if (!F.isEmpty(rmtNodes)) {
cctx.io()
.safeSend(
rmtNodes,
req,
cctx.ioPolicy(),
new P1<ClusterNode>() {
@Override
public boolean apply(ClusterNode node) {
fut.onNodeLeft(node.id());
return !fut.isDone();
}
});
}
if (locNode != null) {
cctx.closures()
.callLocalSafe(
new Callable<Object>() {
@Override
public Object call() throws Exception {
req.beforeLocalExecution(cctx);
processQueryRequest(locNodeId, req);
return null;
}
});
}
}
/** Cleans up resources to avoid excessive memory usage. */
public void cleanUp() {
topSnapshot.set(null);
singleMsgs.clear();
fullMsgs.clear();
rcvdIds.clear();
oldestNode.set(null);
partReleaseFut = null;
Collection<ClusterNode> rmtNodes = this.rmtNodes;
if (rmtNodes != null) rmtNodes.clear();
}
/**
* @param cacheCtx Cache context.
* @return {@code True} if local node can calculate affinity on it's own for this partition map
* exchange.
*/
private boolean canCalculateAffinity(GridCacheContext cacheCtx) {
AffinityFunction affFunc = cacheCtx.config().getAffinity();
// Do not request affinity from remote nodes if affinity function is not centralized.
if (!U.hasAnnotation(affFunc, AffinityCentralizedFunction.class)) return true;
// If local node did not initiate exchange or local node is the only cache node in grid.
Collection<ClusterNode> affNodes = CU.affinityNodes(cacheCtx, exchId.topologyVersion());
return !exchId.nodeId().equals(cctx.localNodeId())
|| (affNodes.size() == 1 && affNodes.contains(cctx.localNode()));
}
/**
* Processes cache query response.
*
* @param sndId Sender node id.
* @param res Query response.
*/
@SuppressWarnings("unchecked")
private void processQueryResponse(UUID sndId, GridCacheQueryResponse res) {
if (log.isDebugEnabled()) log.debug("Received query response: " + res);
GridCacheQueryFutureAdapter fut = getQueryFuture(res.requestId());
if (fut != null)
if (res.fields())
((GridCacheDistributedFieldsQueryFuture) fut)
.onPage(
sndId,
res.metadata(),
(Collection<Map<String, Object>>) ((Collection) res.data()),
res.error(),
res.isFinished());
else fut.onPage(sndId, res.data(), res.error(), res.isFinished());
else if (!cancelled.contains(res.requestId()))
U.warn(
log,
"Received response for finished or unknown query [rmtNodeId="
+ sndId
+ ", res="
+ res
+ ']');
}
/**
* @param p Partition.
* @param topVer Topology version ({@code -1} for all nodes).
* @param state Partition state.
* @param states Additional partition states.
* @return List of nodes for the partition.
*/
private List<ClusterNode> nodes(
int p,
AffinityTopologyVersion topVer,
GridDhtPartitionState state,
GridDhtPartitionState... states) {
Collection<UUID> allIds =
topVer.topologyVersion() > 0 ? F.nodeIds(CU.affinityNodes(cctx, topVer)) : null;
lock.readLock().lock();
try {
assert node2part != null && node2part.valid()
: "Invalid node-to-partitions map [topVer="
+ topVer
+ ", allIds="
+ allIds
+ ", node2part="
+ node2part
+ ", cache="
+ cctx.name()
+ ']';
Collection<UUID> nodeIds = part2node.get(p);
// Node IDs can be null if both, primary and backup, nodes disappear.
int size = nodeIds == null ? 0 : nodeIds.size();
if (size == 0) return Collections.emptyList();
List<ClusterNode> nodes = new ArrayList<>(size);
for (UUID id : nodeIds) {
if (topVer.topologyVersion() > 0 && !allIds.contains(id)) continue;
if (hasState(p, id, state, states)) {
ClusterNode n = cctx.discovery().node(id);
if (n != null && (topVer.topologyVersion() < 0 || n.order() <= topVer.topologyVersion()))
nodes.add(n);
}
}
return nodes;
} finally {
lock.readLock().unlock();
}
}
/**
* @param key Key to add to read set.
* @param val Value.
* @param drVer Data center replication version.
* @param skipStore Skip store flag.
* @throws IgniteCheckedException If failed.
* @return {@code True} if entry has been enlisted.
*/
public boolean addEntry(
GridCacheContext cacheCtx,
IgniteTxKey key,
GridCacheOperation op,
CacheObject val,
@Nullable GridCacheVersion drVer,
boolean skipStore)
throws IgniteCheckedException {
checkInternal(key);
GridNearCacheEntry cached = cacheCtx.near().peekExx(key.key());
try {
if (cached == null) {
evicted.add(key);
return false;
} else {
cached.unswap();
CacheObject peek = cached.peek(true, false, false, null);
if (peek == null && cached.evictInternal(false, xidVer, null)) {
cached.context().cache().removeIfObsolete(key.key());
evicted.add(key);
return false;
} else {
IgniteTxEntry txEntry =
new IgniteTxEntry(cacheCtx, this, op, val, -1L, -1L, cached, drVer, skipStore);
writeMap.put(key, txEntry);
return true;
}
}
} catch (GridCacheEntryRemovedException ignore) {
evicted.add(key);
if (log.isDebugEnabled())
log.debug(
"Got removed entry when adding reads to remote transaction (will ignore): " + cached);
return false;
}
}
/**
* Processes cache query request.
*
* @param sndId Sender node id.
* @param req Query request.
*/
@SuppressWarnings("unchecked")
@Override
void processQueryRequest(UUID sndId, GridCacheQueryRequest req) {
if (req.cancel()) {
cancelIds.add(new CancelMessageId(req.id(), sndId));
if (req.fields()) removeFieldsQueryResult(sndId, req.id());
else removeQueryResult(sndId, req.id());
} else {
if (!cancelIds.contains(new CancelMessageId(req.id(), sndId))) {
if (!F.eq(req.cacheName(), cctx.name())) {
GridCacheQueryResponse res =
new GridCacheQueryResponse(
cctx.cacheId(),
req.id(),
new IgniteCheckedException(
"Received request for incorrect cache [expected="
+ cctx.name()
+ ", actual="
+ req.cacheName()));
sendQueryResponse(sndId, res, 0);
} else {
threads.put(req.id(), Thread.currentThread());
try {
GridCacheQueryInfo info = distributedQueryInfo(sndId, req);
if (info == null) return;
if (req.fields()) runFieldsQuery(info);
else runQuery(info);
} catch (Throwable e) {
U.error(log(), "Failed to run query.", e);
sendQueryResponse(
sndId, new GridCacheQueryResponse(cctx.cacheId(), req.id(), e.getCause()), 0);
if (e instanceof Error) throw (Error) e;
} finally {
threads.remove(req.id());
}
}
}
}
}
/** @return {@code True} if all replies are received. */
private boolean allReceived() {
Collection<UUID> rmtIds = this.rmtIds;
assert rmtIds != null : "Remote Ids can't be null: " + this;
synchronized (rcvdIds) {
return rcvdIds.containsAll(rmtIds);
}
}
/**
* @param entry Entry to enlist.
* @throws IgniteCheckedException If failed.
* @return {@code True} if entry was enlisted.
*/
private boolean addEntry(IgniteTxEntry entry) throws IgniteCheckedException {
checkInternal(entry.txKey());
GridCacheContext cacheCtx = entry.context();
if (!cacheCtx.isNear()) cacheCtx = cacheCtx.dht().near().context();
GridNearCacheEntry cached = cacheCtx.near().peekExx(entry.key());
if (cached == null) {
evicted.add(entry.txKey());
return false;
} else {
cached.unswap();
try {
CacheObject val = cached.peek(true, false, false, null);
if (val == null && cached.evictInternal(false, xidVer, null)) {
evicted.add(entry.txKey());
return false;
} else {
// Initialize cache entry.
entry.cached(cached);
writeMap.put(entry.txKey(), entry);
addExplicit(entry);
return true;
}
} catch (GridCacheEntryRemovedException ignore) {
evicted.add(entry.txKey());
if (log.isDebugEnabled())
log.debug("Got removed entry when adding to remote transaction (will ignore): " + cached);
return false;
}
}
}
/**
* This constructor is meant for optimistic transactions.
*
* @param ldr Class loader.
* @param nodeId Node ID.
* @param nearNodeId Near node ID.
* @param rmtThreadId Remote thread ID.
* @param xidVer XID version.
* @param commitVer Commit version.
* @param sys System flag.
* @param concurrency Concurrency level (should be pessimistic).
* @param isolation Transaction isolation.
* @param invalidate Invalidate flag.
* @param timeout Timeout.
* @param writeEntries Write entries.
* @param ctx Cache registry.
* @param txSize Expected transaction size.
* @throws IgniteCheckedException If unmarshalling failed.
*/
public GridNearTxRemote(
GridCacheSharedContext ctx,
ClassLoader ldr,
UUID nodeId,
UUID nearNodeId,
long rmtThreadId,
GridCacheVersion xidVer,
GridCacheVersion commitVer,
boolean sys,
byte plc,
TransactionConcurrency concurrency,
TransactionIsolation isolation,
boolean invalidate,
long timeout,
Collection<IgniteTxEntry> writeEntries,
int txSize,
@Nullable UUID subjId,
int taskNameHash)
throws IgniteCheckedException {
super(
ctx,
nodeId,
rmtThreadId,
xidVer,
commitVer,
sys,
plc,
concurrency,
isolation,
invalidate,
timeout,
txSize,
subjId,
taskNameHash);
assert nearNodeId != null;
this.nearNodeId = nearNodeId;
readMap = Collections.emptyMap();
writeMap =
new LinkedHashMap<>(
writeEntries != null ? Math.max(txSize, writeEntries.size()) : txSize, 1.0f);
if (writeEntries != null) {
for (IgniteTxEntry entry : writeEntries) {
entry.unmarshal(ctx, true, ldr);
addEntry(entry);
}
}
}
/** @throws Exception Thrown if test failed. */
public void testC() throws Exception {
final Collection<SampleBean> set = new GridConcurrentWeakHashSet<>();
int threadCnt = 2;
final int cnt = 5;
final CountDownLatch start = new CountDownLatch(1);
final CountDownLatch stop = new CountDownLatch(threadCnt);
Runnable r =
new Runnable() {
@Override
public void run() {
try {
start.await();
for (int i = 0; i < cnt; i++) {
for (int j = 0; j < cnt; j++) set.add(new SampleBean(i));
}
} catch (Exception e) {
error(e.getMessage());
}
stop.countDown();
}
};
for (int i = 0; i < threadCnt; i++) new Thread(r).start();
start.countDown();
stop.await();
assert set.size() == cnt;
gc();
assert set.isEmpty();
}
/** {@inheritDoc} */
@Override
public Collection<ClusterNode> nodes(int p, AffinityTopologyVersion topVer) {
Collection<ClusterNode> affNodes = cctx.affinity().nodes(p, topVer);
lock.readLock().lock();
try {
assert node2part != null && node2part.valid()
: "Invalid node-to-partitions map [topVer1="
+ topVer
+ ", topVer2="
+ this.topVer
+ ", cache="
+ cctx.name()
+ ", node2part="
+ node2part
+ ']';
Collection<ClusterNode> nodes = null;
Collection<UUID> nodeIds = part2node.get(p);
if (!F.isEmpty(nodeIds)) {
Collection<UUID> affIds = new HashSet<>(F.viewReadOnly(affNodes, F.node2id()));
for (UUID nodeId : nodeIds) {
if (!affIds.contains(nodeId) && hasState(p, nodeId, OWNING, MOVING, RENTING)) {
ClusterNode n = cctx.discovery().node(nodeId);
if (n != null
&& (topVer.topologyVersion() < 0 || n.order() <= topVer.topologyVersion())) {
if (nodes == null) {
nodes = new ArrayList<>(affNodes.size() + 2);
nodes.addAll(affNodes);
}
nodes.add(n);
}
}
}
}
return nodes != null ? nodes : affNodes;
} finally {
lock.readLock().unlock();
}
}
/** {@inheritDoc} */
@Override
void onQueryFutureCanceled(long reqId) {
cancelled.add(reqId);
}
/** {@inheritDoc} */
@SuppressWarnings("ErrorNotRethrown")
@Override
public IpcEndpoint accept() throws IgniteCheckedException {
while (!Thread.currentThread().isInterrupted()) {
Socket sock = null;
boolean accepted = false;
try {
sock = srvSock.accept();
accepted = true;
InputStream inputStream = sock.getInputStream();
ObjectInputStream in = new ObjectInputStream(inputStream);
ObjectOutputStream out = new ObjectOutputStream(sock.getOutputStream());
IpcSharedMemorySpace inSpace = null;
IpcSharedMemorySpace outSpace = null;
boolean err = true;
try {
IpcSharedMemoryInitRequest req = (IpcSharedMemoryInitRequest) in.readObject();
if (log.isDebugEnabled()) log.debug("Processing request: " + req);
IgnitePair<String> p = inOutToken(req.pid(), size);
String file1 = p.get1();
String file2 = p.get2();
assert file1 != null;
assert file2 != null;
// Create tokens.
new File(file1).createNewFile();
new File(file2).createNewFile();
if (log.isDebugEnabled()) log.debug("Created token files: " + p);
inSpace = new IpcSharedMemorySpace(file1, req.pid(), pid, size, true, log);
outSpace = new IpcSharedMemorySpace(file2, pid, req.pid(), size, false, log);
IpcSharedMemoryClientEndpoint ret =
new IpcSharedMemoryClientEndpoint(inSpace, outSpace, log);
out.writeObject(
new IpcSharedMemoryInitResponse(
file2, outSpace.sharedMemoryId(), file1, inSpace.sharedMemoryId(), pid, size));
err = !in.readBoolean();
endpoints.add(ret);
return ret;
} catch (UnsatisfiedLinkError e) {
throw IpcSharedMemoryUtils.linkError(e);
} catch (IOException e) {
if (log.isDebugEnabled())
log.debug(
"Failed to process incoming connection "
+ "(was connection closed by another party):"
+ e.getMessage());
} catch (ClassNotFoundException e) {
U.error(log, "Failed to process incoming connection.", e);
} catch (ClassCastException e) {
String msg =
"Failed to process incoming connection (most probably, shared memory "
+ "rest endpoint has been configured by mistake).";
LT.warn(log, null, msg);
sendErrorResponse(out, e);
} catch (IpcOutOfSystemResourcesException e) {
if (!omitOutOfResourcesWarn) LT.warn(log, null, OUT_OF_RESOURCES_MSG);
sendErrorResponse(out, e);
} catch (IgniteCheckedException e) {
LT.error(log, e, "Failed to process incoming shared memory connection.");
sendErrorResponse(out, e);
} finally {
// Exception has been thrown, need to free system resources.
if (err) {
if (inSpace != null) inSpace.forceClose();
// Safety.
if (outSpace != null) outSpace.forceClose();
}
}
} catch (IOException e) {
if (!Thread.currentThread().isInterrupted() && !accepted)
throw new IgniteCheckedException("Failed to accept incoming connection.", e);
if (!closed)
LT.error(
log, null, "Failed to process incoming shared memory connection: " + e.getMessage());
} finally {
U.closeQuiet(sock);
}
} // while
throw new IgniteInterruptedCheckedException("Socket accept was interrupted.");
}
/**
* @param updateSeq Update sequence.
* @return Checks if any of the local partitions need to be evicted.
*/
private boolean checkEvictions(long updateSeq) {
assert lock.isWriteLockedByCurrentThread();
boolean changed = false;
UUID locId = cctx.nodeId();
for (GridDhtLocalPartition part : locParts.values()) {
GridDhtPartitionState state = part.state();
if (state.active()) {
int p = part.id();
List<ClusterNode> affNodes = cctx.affinity().nodes(p, topVer);
if (!affNodes.contains(cctx.localNode())) {
Collection<UUID> nodeIds = F.nodeIds(nodes(p, topVer, OWNING));
// If all affinity nodes are owners, then evict partition from local node.
if (nodeIds.containsAll(F.nodeIds(affNodes))) {
part.rent(false);
updateLocal(part.id(), locId, part.state(), updateSeq);
changed = true;
if (log.isDebugEnabled())
log.debug("Evicted local partition (all affinity nodes are owners): " + part);
} else {
int ownerCnt = nodeIds.size();
int affCnt = affNodes.size();
if (ownerCnt > affCnt) {
List<ClusterNode> sorted = new ArrayList<>(cctx.discovery().nodes(nodeIds));
// Sort by node orders in ascending order.
Collections.sort(sorted, CU.nodeComparator(true));
int diff = sorted.size() - affCnt;
for (int i = 0; i < diff; i++) {
ClusterNode n = sorted.get(i);
if (locId.equals(n.id())) {
part.rent(false);
updateLocal(part.id(), locId, part.state(), updateSeq);
changed = true;
if (log.isDebugEnabled())
log.debug(
"Evicted local partition (this node is oldest non-affinity node): " + part);
break;
}
}
}
}
}
}
}
return changed;
}
/**
* Adds evicted key bytes to evicted collection.
*
* @param key Evicted key.
*/
public void addEvicted(IgniteTxKey key) {
evicted.add(key);
}
/** @throws Exception Thrown if test failed. */
public void testA() throws Exception {
Collection<Integer> set = new GridConcurrentWeakHashSet<>();
Integer i = 1;
assert set.add(i);
assert !set.add(i);
assert set.contains(i);
assert set.size() == 1;
Collection<Integer> c = F.asList(2, 3, 4, 5);
assert set.addAll(c);
assert !set.addAll(c);
assert set.containsAll(c);
assert set.size() == 1 + c.size();
assert set.remove(i);
assert !set.remove(i);
assert !set.contains(i);
assert set.size() == c.size();
assert set.removeAll(c);
assert !set.removeAll(c);
assert !set.containsAll(c);
assert set.isEmpty();
Collection<Integer> c1 = Arrays.asList(1, 3, 5, 7, 9);
int cnt = 0;
for (Iterator<Integer> iter = set.iterator(); iter.hasNext(); cnt++) c1.contains(iter.next());
assert set.size() == cnt;
assert set.size() == set.toArray().length;
assert set.addAll(c1);
assert set.retainAll(c);
assert !set.retainAll(c);
Collection<Integer> c2 = F.retain(c1, true, c);
assert set.containsAll(c2);
assert !set.containsAll(c1);
assert !set.containsAll(c);
assert set.size() == c2.size();
set.clear();
assert set.isEmpty();
try {
set.iterator().next();
assert false;
} catch (NoSuchElementException ignored) {
assert true;
}
try {
set.add(null);
assert false;
} catch (NullPointerException ignored) {
assert true;
}
}
/** @throws Exception Thrown if test failed. */
public void testD() throws Exception {
final Collection<SampleBean> set = new GridConcurrentWeakHashSet<>();
final int cnt = 100;
final CountDownLatch start = new CountDownLatch(1);
final CountDownLatch stop = new CountDownLatch(3);
new Thread() {
@Override
public void run() {
try {
start.await();
for (int i = 0; i < cnt; i++) {
for (int j = 0; j < cnt; j++) set.add(new SampleBean(i));
}
} catch (Exception e) {
error(e.getMessage());
}
stop.countDown();
}
}.start();
new Thread() {
@Override
public void run() {
try {
start.await();
for (int i = 0; i < cnt; i++) {
for (int j = 0; j < cnt; j++) set.remove(new SampleBean(i));
}
} catch (Exception e) {
error(e.getMessage());
}
stop.countDown();
}
}.start();
new Thread() {
@SuppressWarnings({"UnusedDeclaration"})
@Override
public void run() {
try {
start.await();
while (stop.getCount() > 1) {
for (SampleBean b : set) {
// No-op.
}
}
} catch (Exception e) {
error(e.getMessage());
}
stop.countDown();
}
}.start();
start.countDown();
stop.await();
gc();
assert set.isEmpty();
}
/** @throws Exception Thrown if test failed. */
@SuppressWarnings({"UnusedAssignment"})
public void testB() throws Exception {
Collection<SampleBean> set = new GridConcurrentWeakHashSet<>();
SampleBean bean1 = new SampleBean(1);
assert set.add(bean1);
assert !set.add(bean1);
assert set.size() == 1;
assert set.contains(bean1);
bean1 = null;
gc();
assert set.isEmpty();
Collection<SampleBean> c =
F.asList(new SampleBean(1), new SampleBean(2), new SampleBean(3), new SampleBean(4));
assert set.addAll(c);
assert !set.addAll(c);
assert set.size() == c.size();
assert set.containsAll(c);
c = null;
gc();
assert set.isEmpty();
SampleBean b1 = new SampleBean(1);
SampleBean b2 = new SampleBean(2);
SampleBean b3 = new SampleBean(3);
SampleBean b4 = new SampleBean(4);
SampleBean b5 = new SampleBean(5);
set.add(b1);
set.add(b2);
set.add(b3);
set.add(b4);
set.add(b5);
Iterator iter = set.iterator();
assert iter.hasNext();
b2 = null;
b3 = null;
b4 = null;
gc();
int cnt = 0;
while (iter.hasNext()) {
info(iter.next().toString());
cnt++;
}
assert set.size() == cnt;
}