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org.infinispan.transaction.impl.TransactionTable Maven / Gradle / Ivy
package org.infinispan.transaction.impl;
import net.jcip.annotations.GuardedBy;
import org.infinispan.Cache;
import org.infinispan.commands.CommandsFactory;
import org.infinispan.commands.tx.RollbackCommand;
import org.infinispan.commands.write.WriteCommand;
import org.infinispan.commons.CacheException;
import org.infinispan.commons.equivalence.AnyEquivalence;
import org.infinispan.commons.equivalence.IdentityEquivalence;
import org.infinispan.commons.util.CollectionFactory;
import org.infinispan.commons.util.InfinispanCollections;
import org.infinispan.commons.util.Util;
import org.infinispan.commons.util.concurrent.jdk8backported.EquivalentConcurrentHashMapV8;
import org.infinispan.configuration.cache.Configuration;
import org.infinispan.configuration.cache.Configurations;
import org.infinispan.context.InvocationContextFactory;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.factories.annotations.Start;
import org.infinispan.factories.annotations.Stop;
import org.infinispan.interceptors.InterceptorChain;
import org.infinispan.interceptors.locking.ClusteringDependentLogic;
import org.infinispan.notifications.Listener;
import org.infinispan.notifications.cachelistener.CacheNotifier;
import org.infinispan.notifications.cachelistener.annotation.TopologyChanged;
import org.infinispan.notifications.cachelistener.event.TopologyChangedEvent;
import org.infinispan.notifications.cachemanagerlistener.CacheManagerNotifier;
import org.infinispan.notifications.cachemanagerlistener.annotation.ViewChanged;
import org.infinispan.notifications.cachemanagerlistener.event.ViewChangedEvent;
import org.infinispan.remoting.rpc.RpcManager;
import org.infinispan.remoting.transport.Address;
import org.infinispan.transaction.LockingMode;
import org.infinispan.transaction.synchronization.SyncLocalTransaction;
import org.infinispan.transaction.synchronization.SynchronizationAdapter;
import org.infinispan.transaction.xa.CacheTransaction;
import org.infinispan.transaction.xa.GlobalTransaction;
import org.infinispan.transaction.xa.TransactionFactory;
import org.infinispan.util.TimeService;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import javax.transaction.Transaction;
import javax.transaction.TransactionSynchronizationRegistry;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Repository for {@link RemoteTransaction} and {@link org.infinispan.transaction.xa.TransactionXaAdapter}s (locally
* originated transactions).
*
* @author [email protected]
* @author Galder Zamarreño
* @since 4.0
*/
@Listener
public class TransactionTable implements org.infinispan.transaction.TransactionTable {
public static final int CACHE_STOPPED_TOPOLOGY_ID = -1;
/**
* minTxTopologyId is the minimum topology ID across all ongoing local and remote transactions.
*/
private volatile int minTxTopologyId = CACHE_STOPPED_TOPOLOGY_ID;
private volatile int currentTopologyId = CACHE_STOPPED_TOPOLOGY_ID;
private static final Log log = LogFactory.getLog(TransactionTable.class);
protected Configuration configuration;
protected InvocationContextFactory icf;
protected TransactionCoordinator txCoordinator;
protected TransactionFactory txFactory;
protected RpcManager rpcManager;
protected CommandsFactory commandsFactory;
protected ClusteringDependentLogic clusteringLogic;
protected boolean clustered = false;
private ConcurrentMap localTransactions;
private ConcurrentMap globalToLocalTransactions;
private ConcurrentMap remoteTransactions;
private InterceptorChain invoker;
private CacheNotifier notifier;
private TransactionSynchronizationRegistry transactionSynchronizationRegistry;
private Lock minTopologyRecalculationLock;
private CompletedTransactionsInfo completedTransactionsInfo;
private ScheduledExecutorService executorService;
private String cacheName;
private TimeService timeService;
private CacheManagerNotifier cacheManagerNotifier;
@Inject
public void initialize(RpcManager rpcManager, Configuration configuration,
InvocationContextFactory icf, InterceptorChain invoker, CacheNotifier notifier,
TransactionFactory gtf, TransactionCoordinator txCoordinator,
TransactionSynchronizationRegistry transactionSynchronizationRegistry,
CommandsFactory commandsFactory, ClusteringDependentLogic clusteringDependentLogic, Cache cache,
TimeService timeService, CacheManagerNotifier cacheManagerNotifier) {
this.rpcManager = rpcManager;
this.configuration = configuration;
this.icf = icf;
this.invoker = invoker;
this.notifier = notifier;
this.txFactory = gtf;
this.txCoordinator = txCoordinator;
this.transactionSynchronizationRegistry = transactionSynchronizationRegistry;
this.commandsFactory = commandsFactory;
this.clusteringLogic = clusteringDependentLogic;
this.cacheManagerNotifier = cacheManagerNotifier;
this.cacheName = cache.getName();
this.timeService = timeService;
this.clustered = configuration.clustering().cacheMode().isClustered();
}
@Start(priority = 9) // Start before cache loader manager
@SuppressWarnings("unused")
public void start() {
final int concurrencyLevel = configuration.locking().concurrencyLevel();
//use the IdentityEquivalence because some Transaction implementation does not have a stable hash code function
//and it can cause some leaks in the concurrent map.
localTransactions = CollectionFactory.makeConcurrentMap(concurrencyLevel, 0.75f, concurrencyLevel,
new IdentityEquivalence(),
AnyEquivalence.getInstance());
globalToLocalTransactions = CollectionFactory.makeConcurrentMap(concurrencyLevel, 0.75f, concurrencyLevel);
boolean transactional = configuration.transaction().transactionMode().isTransactional();
if (clustered && transactional) {
minTopologyRecalculationLock = new ReentrantLock();
remoteTransactions = CollectionFactory.makeConcurrentMap(concurrencyLevel, 0.75f, concurrencyLevel);
ThreadFactory tf = new ThreadFactory() {
@Override
public Thread newThread(Runnable r) {
String address = rpcManager != null ? rpcManager.getTransport().getAddress().toString() : "local";
Thread th = new Thread(r, "TxCleanupService," + cacheName + "," + address);
th.setDaemon(true);
return th;
}
};
executorService = Executors.newSingleThreadScheduledExecutor(tf);
notifier.addListener(this);
cacheManagerNotifier.addListener(this);
boolean totalOrder = configuration.transaction().transactionProtocol().isTotalOrder();
if (!totalOrder) {
completedTransactionsInfo = new CompletedTransactionsInfo();
// Periodically run a task to cleanup the transaction table of completed transactions.
long interval = configuration.transaction().reaperWakeUpInterval();
executorService.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
completedTransactionsInfo.cleanupCompletedTransactions();
}
}, interval, interval, TimeUnit.MILLISECONDS);
executorService.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
cleanupTimedOutTransactions();
}
}, interval, interval, TimeUnit.MILLISECONDS);
}
}
}
@Override
public GlobalTransaction getGlobalTransaction(Transaction transaction) {
if (transaction == null) {
throw new NullPointerException("Transaction must not be null.");
}
LocalTransaction localTransaction = localTransactions.get(transaction);
return localTransaction != null ? localTransaction.getGlobalTransaction() : null;
}
@Override
public Collection getLocalGlobalTransaction() {
return Collections.unmodifiableCollection(globalToLocalTransactions.keySet());
}
@Override
public Collection getRemoteGlobalTransaction() {
return Collections.unmodifiableCollection(remoteTransactions.keySet());
}
@Stop
@SuppressWarnings("unused")
private void stop() {
if (executorService != null)
executorService.shutdownNow();
if (clustered) {
notifier.removeListener(this);
currentTopologyId = CACHE_STOPPED_TOPOLOGY_ID; // indicate that the cache has stopped
}
shutDownGracefully();
}
public Set getLockedKeysForRemoteTransaction(GlobalTransaction gtx) {
RemoteTransaction transaction = remoteTransactions.get(gtx);
if (transaction == null) return InfinispanCollections.emptySet();
return transaction.getLockedKeys();
}
public void remoteTransactionPrepared(GlobalTransaction gtx) {
//do nothing
}
public void localTransactionPrepared(LocalTransaction localTransaction) {
//nothing, only used by recovery
}
public void enlist(Transaction transaction, LocalTransaction localTransaction) {
if (!localTransaction.isEnlisted()) {
SynchronizationAdapter sync = new SynchronizationAdapter(
localTransaction, txCoordinator, commandsFactory, rpcManager,
this, clusteringLogic, configuration);
if (transactionSynchronizationRegistry != null) {
try {
transactionSynchronizationRegistry.registerInterposedSynchronization(sync);
} catch (Exception e) {
log.failedSynchronizationRegistration(e);
throw new CacheException(e);
}
} else {
try {
transaction.registerSynchronization(sync);
} catch (Exception e) {
log.failedSynchronizationRegistration(e);
throw new CacheException(e);
}
}
((SyncLocalTransaction) localTransaction).setEnlisted(true);
}
}
public void failureCompletingTransaction(Transaction tx) {
final LocalTransaction localTransaction = localTransactions.get(tx);
if (localTransaction != null) {
removeLocalTransaction(localTransaction);
}
}
/**
* Returns true if the given transaction is already registered with the transaction table.
*
* @param tx if null false is returned
*/
public boolean containsLocalTx(Transaction tx) {
return tx != null && localTransactions.containsKey(tx);
}
public int getMinTopologyId() {
return minTxTopologyId;
}
public void cleanupLeaverTransactions(List members) {
// Can happen if the cache is non-transactional
if (remoteTransactions == null)
return;
log.tracef("Checking for transactions originated on leavers. Current cache members are %s, remote transactions: %d",
members, remoteTransactions.size());
HashSet membersSet = new HashSet<>(members);
List toKill = new ArrayList();
for (Map.Entry e : remoteTransactions.entrySet()) {
GlobalTransaction gt = e.getKey();
RemoteTransaction remoteTx = e.getValue();
log.tracef("Checking transaction %s", gt);
if (!membersSet.contains(gt.getAddress())) {
toKill.add(gt);
}
}
if (toKill.isEmpty()) {
log.tracef("No remote transactions pertain to originator(s) who have left the cluster.");
} else {
log.debugf("The originating node left the cluster for %d remote transactions", toKill.size());
}
for (GlobalTransaction gtx : toKill) {
log.debugf("Rolling back transaction %s because originator %s left the cluster", gtx, gtx.getAddress());
killTransaction(gtx);
}
log.tracef("Completed cleaning transactions originating on leavers. Remote transactions remaining: %d",
remoteTransactions.size());
}
public void cleanupTimedOutTransactions() {
log.tracef("About to cleanup remote transactions older than %d ms", configuration.transaction().completedTxTimeout());
long beginning = timeService.time();
long cutoffCreationTime = beginning - TimeUnit.MILLISECONDS.toNanos(configuration.transaction().completedTxTimeout());
List toKill = new ArrayList();
// Check remote transactions.
for(Map.Entry e : remoteTransactions.entrySet()) {
GlobalTransaction gtx = e.getKey();
RemoteTransaction remoteTx = e.getValue();
if(remoteTx != null) {
log.tracef("Checking transaction %s", gtx);
// Check the time.
if (remoteTx.getCreationTime() - cutoffCreationTime < 0) {
long duration = timeService.timeDuration(remoteTx.getCreationTime(), beginning, TimeUnit.MILLISECONDS);
log.remoteTransactionTimeout(gtx, duration);
toKill.add(gtx);
}
}
}
// Rollback the orphaned transactions and release any held locks.
for (GlobalTransaction gtx : toKill) {
killTransaction(gtx);
}
}
private void killTransaction(GlobalTransaction gtx) {
RollbackCommand rc = new RollbackCommand(cacheName, gtx);
rc.init(invoker, icf, TransactionTable.this);
try {
rc.perform(null);
log.tracef("Rollback of transaction %s complete.", gtx);
} catch (Throwable e) {
log.unableToRollbackGlobalTx(gtx, e);
}
}
/**
* Returns the {@link RemoteTransaction} associated with the supplied transaction id. Returns null if no such
* association exists.
*/
public RemoteTransaction getRemoteTransaction(GlobalTransaction txId) {
return remoteTransactions.get(txId);
}
public void remoteTransactionRollback(GlobalTransaction gtx) {
final RemoteTransaction remove = removeRemoteTransaction(gtx);
log.tracef("Removed local transaction %s? %b", gtx, remove);
}
/**
* Returns an existing remote transaction or creates one if none exists.
* Atomicity: this method supports concurrent invocations, guaranteeing that all threads will see the same
* transaction object.
*/
public RemoteTransaction getOrCreateRemoteTransaction(GlobalTransaction globalTx, WriteCommand[] modifications) {
return getOrCreateRemoteTransaction(globalTx, modifications, currentTopologyId);
}
private RemoteTransaction getOrCreateRemoteTransaction(GlobalTransaction globalTx, WriteCommand[] modifications, int topologyId) {
RemoteTransaction remoteTransaction = remoteTransactions.get(globalTx);
if (remoteTransaction != null)
return remoteTransaction;
remoteTransaction = modifications == null ? txFactory.newRemoteTransaction(globalTx, topologyId)
: txFactory.newRemoteTransaction(modifications, globalTx, topologyId);
RemoteTransaction existing = remoteTransactions.putIfAbsent(globalTx, remoteTransaction);
if (existing != null) {
log.tracef("Remote transaction already registered: %s", existing);
return existing;
} else {
log.tracef("Created and registered remote transaction %s", remoteTransaction);
if (remoteTransaction.getTopologyId() < minTxTopologyId) {
log.tracef("Changing minimum topology ID from %d to %d", minTxTopologyId, remoteTransaction.getTopologyId());
minTxTopologyId = remoteTransaction.getTopologyId();
}
return remoteTransaction;
}
}
/**
* Returns the {@link org.infinispan.transaction.xa.TransactionXaAdapter} corresponding to the supplied transaction.
* If none exists, will be created first.
*/
public LocalTransaction getOrCreateLocalTransaction(Transaction transaction, boolean implicitTransaction) {
LocalTransaction current = localTransactions.get(transaction);
if (current == null) {
Address localAddress = rpcManager != null ? rpcManager.getTransport().getAddress() : null;
GlobalTransaction tx = txFactory.newGlobalTransaction(localAddress, false);
current = txFactory.newLocalTransaction(transaction, tx, implicitTransaction, currentTopologyId);
log.tracef("Created a new local transaction: %s", current);
localTransactions.put(transaction, current);
globalToLocalTransactions.put(current.getGlobalTransaction(), current);
notifier.notifyTransactionRegistered(tx, true);
}
return current;
}
/**
* Removes the {@link org.infinispan.transaction.xa.TransactionXaAdapter} corresponding to the given tx. Returns true
* if such an tx exists.
*/
public boolean removeLocalTransaction(LocalTransaction localTransaction) {
return localTransaction != null && (removeLocalTransactionInternal(localTransaction.getTransaction()) != null);
}
protected final LocalTransaction removeLocalTransactionInternal(Transaction tx) {
LocalTransaction localTx = localTransactions.get(tx);
if (localTx != null) {
globalToLocalTransactions.remove(localTx.getGlobalTransaction());
localTransactions.remove(tx);
releaseResources(localTx);
}
return localTx;
}
private void releaseResources(CacheTransaction cacheTransaction) {
if (cacheTransaction != null) {
if (clustered) {
recalculateMinTopologyIdIfNeeded(cacheTransaction);
}
log.tracef("Removed %s from transaction table.", cacheTransaction);
cacheTransaction.notifyOnTransactionFinished();
}
}
/**
* Removes the {@link RemoteTransaction} corresponding to the given tx.
*/
public void remoteTransactionCommitted(GlobalTransaction gtx, boolean onePc) {
boolean optimisticWih1Pc = onePc && (configuration.transaction().lockingMode() == LockingMode.OPTIMISTIC);
if (Configurations.isSecondPhaseAsync(configuration) || configuration.transaction().transactionProtocol().isTotalOrder() || optimisticWih1Pc) {
removeRemoteTransaction(gtx);
}
}
public final RemoteTransaction removeRemoteTransaction(GlobalTransaction txId) {
RemoteTransaction removed = remoteTransactions.remove(txId);
log.tracef("Removed remote transaction %s ? %s", txId, removed);
releaseResources(removed);
return removed;
}
public int getRemoteTxCount() {
return remoteTransactions.size();
}
public int getLocalTxCount() {
return localTransactions.size();
}
/**
* Looks up a LocalTransaction given a GlobalTransaction.
* @param txId the global transaction identifier
* @return the LocalTransaction or null if not found
*/
public LocalTransaction getLocalTransaction(GlobalTransaction txId) {
return globalToLocalTransactions.get(txId);
}
public boolean containsLocalTx(GlobalTransaction globalTransaction) {
return globalToLocalTransactions.containsKey(globalTransaction);
}
public LocalTransaction getLocalTransaction(Transaction tx) {
return localTransactions.get(tx);
}
public boolean containRemoteTx(GlobalTransaction globalTransaction) {
return remoteTransactions.containsKey(globalTransaction);
}
public Collection getRemoteTransactions() {
return remoteTransactions.values();
}
public Collection getLocalTransactions() {
return localTransactions.values();
}
protected final void recalculateMinTopologyIdIfNeeded(CacheTransaction removedTransaction) {
if (removedTransaction == null) throw new IllegalArgumentException("Transaction cannot be null!");
if (currentTopologyId != CACHE_STOPPED_TOPOLOGY_ID) {
// Assume that we only get here if we are clustered.
int removedTransactionTopologyId = removedTransaction.getTopologyId();
if (removedTransactionTopologyId < minTxTopologyId) {
log.tracef("A transaction has a topology ID (%s) that is smaller than the smallest transaction topology ID (%s) this node knows about! This can happen if a concurrent thread recalculates the minimum topology ID after the current transaction has been removed from the transaction table.", removedTransactionTopologyId, minTxTopologyId);
} else if (removedTransactionTopologyId == minTxTopologyId && removedTransactionTopologyId < currentTopologyId) {
// We should only need to re-calculate the minimum topology ID if the transaction being completed
// has the same ID as the smallest known transaction ID, to check what the new smallest is, and this is
// not the current topology ID.
calculateMinTopologyId(removedTransactionTopologyId);
}
}
}
@TopologyChanged
@SuppressWarnings("unused")
public void onTopologyChange(TopologyChangedEvent tce) {
// don't do anything if this cache is not clustered
if (clustered) {
if (tce.isPre()) {
currentTopologyId = tce.getNewTopologyId();
} else {
log.debugf("Topology changed, recalculating minTopologyId");
calculateMinTopologyId(-1);
}
}
}
@ViewChanged
public void onViewChange(final ViewChangedEvent e) {
executorService.submit(new Callable() {
public Void call() {
cleanupLeaverTransactions(e.getNewMembers());
return null;
}
});
}
/**
* This method calculates the minimum topology ID known by the current node. This method is only used in a clustered
* cache, and only invoked when either a topology change is detected, or a transaction whose topology ID is not the same as
* the current topology ID.
*
* This method is guarded by minTopologyRecalculationLock to prevent concurrent updates to the minimum topology ID field.
*
* @param idOfRemovedTransaction the topology ID associated with the transaction that triggered this recalculation, or -1
* if triggered by a topology change event.
*/
@GuardedBy("minTopologyRecalculationLock")
private void calculateMinTopologyId(int idOfRemovedTransaction) {
minTopologyRecalculationLock.lock();
try {
// We should only need to re-calculate the minimum topology ID if the transaction being completed
// has the same ID as the smallest known transaction ID, to check what the new smallest is. We do this check
// again here, since this is now within a synchronized method.
if (idOfRemovedTransaction == -1 ||
(idOfRemovedTransaction == minTxTopologyId && idOfRemovedTransaction < currentTopologyId)) {
int minTopologyIdFound = currentTopologyId;
for (CacheTransaction ct : localTransactions.values()) {
int topologyId = ct.getTopologyId();
if (topologyId < minTopologyIdFound) minTopologyIdFound = topologyId;
}
for (CacheTransaction ct : remoteTransactions.values()) {
int topologyId = ct.getTopologyId();
if (topologyId < minTopologyIdFound) minTopologyIdFound = topologyId;
}
if (minTopologyIdFound != minTxTopologyId) {
log.tracef("Changing minimum topology ID from %s to %s", minTxTopologyId, minTopologyIdFound);
minTxTopologyId = minTopologyIdFound;
} else {
log.tracef("Minimum topology ID still is %s; nothing to change", minTopologyIdFound);
}
}
} finally {
minTopologyRecalculationLock.unlock();
}
}
private boolean areTxsOnGoing() {
return !localTransactions.isEmpty() || (remoteTransactions != null && !remoteTransactions.isEmpty());
}
private void shutDownGracefully() {
if (log.isDebugEnabled())
log.debugf("Wait for on-going transactions to finish for %s.", Util.prettyPrintTime(configuration.transaction().cacheStopTimeout(), TimeUnit.MILLISECONDS));
long failTime = timeService.expectedEndTime(configuration.transaction().cacheStopTimeout(), TimeUnit.MILLISECONDS);
boolean txsOnGoing = areTxsOnGoing();
while (txsOnGoing && !timeService.isTimeExpired(failTime)) {
try {
Thread.sleep(30);
txsOnGoing = areTxsOnGoing();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
if (clustered) {
log.debugf("Interrupted waiting for on-going transactions to finish. %s local transactions and %s remote transactions", localTransactions.size(), remoteTransactions.size());
} else {
log.debugf("Interrupted waiting for %s on-going transactions to finish.", localTransactions.size());
}
}
}
if (txsOnGoing) {
log.unfinishedTransactionsRemain(localTransactions == null ? 0 : localTransactions.size(),
remoteTransactions == null ? 0 : remoteTransactions.size());
} else {
log.debug("All transactions terminated");
}
}
/**
* With the current state transfer implementation it is possible for a transaction to be prepared several times
* on a remote node. This might cause leaks, e.g. if the transaction is prepared, committed and prepared again.
* Once marked as completed (because of commit or rollback) any further prepare received on that transaction are discarded.
*/
public void markTransactionCompleted(GlobalTransaction gtx) {
if (completedTransactionsInfo != null) {
completedTransactionsInfo.markTransactionCompleted(gtx);
}
}
/**
* @see #markTransactionCompleted(org.infinispan.transaction.xa.GlobalTransaction)
*/
public boolean isTransactionCompleted(GlobalTransaction gtx) {
if (completedTransactionsInfo == null)
return false;
return completedTransactionsInfo.isTransactionCompleted(gtx);
}
private class CompletedTransactionsInfo {
final EquivalentConcurrentHashMapV8 nodeMaxPrunedTxIds;
final EquivalentConcurrentHashMapV8 completedTransactions;
volatile long globalMaxPrunedTxId;
public CompletedTransactionsInfo() {
nodeMaxPrunedTxIds = new EquivalentConcurrentHashMapV8<>(AnyEquivalence.getInstance(), AnyEquivalence.getInstance());
completedTransactions = new EquivalentConcurrentHashMapV8<>(AnyEquivalence.getInstance(), AnyEquivalence.getInstance());
globalMaxPrunedTxId = -1;
}
/**
* With the current state transfer implementation it is possible for a transaction to be prepared several times
* on a remote node. This might cause leaks, e.g. if the transaction is prepared, committed and prepared again.
* Once marked as completed (because of commit or rollback) any further prepare received on that transaction are discarded.
*/
public void markTransactionCompleted(GlobalTransaction globalTx) {
log.tracef("Marking transaction %s as completed", globalTx);
completedTransactions.put(globalTx, timeService.time());
}
/**
* @see #markTransactionCompleted(org.infinispan.transaction.xa.GlobalTransaction)
*/
public boolean isTransactionCompleted(GlobalTransaction gtx) {
if (completedTransactionsInfo == null)
return false;
if (completedTransactions.containsKey(gtx))
return true;
// Transaction ids are allocated in sequence, so any transaction with a smaller id must have already finished.
// Most likely because the prepare command timed out...
// Note: We must check the id *after* verifying that the tx doesn't exist in the map.
if (gtx.getId() > globalMaxPrunedTxId)
return false;
Long nodeMaxPrunedTxId = nodeMaxPrunedTxIds.get(gtx.getAddress());
return nodeMaxPrunedTxId != null && gtx.getId() <= nodeMaxPrunedTxId;
}
public void cleanupCompletedTransactions() {
if (completedTransactions.isEmpty())
return;
try {
log.tracef("About to cleanup completed transaction. Initial size is %d", completedTransactions.size());
long beginning = timeService.time();
long minCompleteTimestamp = timeService.time() - TimeUnit.MILLISECONDS.toNanos(configuration.transaction().completedTxTimeout());
int removedEntries = 0;
// Collect the leavers. They will be removed at the end.
Set leavers = new HashSet<>();
for (Map.Entry e : nodeMaxPrunedTxIds.entrySet()) {
if (!rpcManager.getMembers().contains(e.getKey())) {
leavers.add(e.getKey());
}
}
// Remove stale completed transactions.
Iterator> txIterator = completedTransactions.entrySet().iterator();
while (txIterator.hasNext()) {
Map.Entry e = txIterator.next();
long completedTime = e.getValue();
if (minCompleteTimestamp - completedTime > 0) {
// Need to update lastPrunedTxId *before* removing the tx from the map
// Don't need atomic operations, there can't be more than one thread updating lastPrunedTxId.
final long txId = e.getKey().getId();
final Address address = e.getKey().getAddress();
updateLastPrunedTxId(txId, address);
txIterator.remove();
removedEntries++;
} else {
// Nodes with "active" completed transactions are not removed..
leavers.remove(e.getKey().getAddress());
}
}
// Finally, remove nodes that are no longer members and don't have any "active" completed transactions.
for (Address e : leavers) {
nodeMaxPrunedTxIds.remove(e);
}
long duration = timeService.timeDuration(beginning, TimeUnit.MILLISECONDS);
log.tracef("Finished cleaning up completed transactions. %d transactions were removed, total duration was %d millis, " +
"current number of completed transactions is %d", removedEntries, duration,
completedTransactions.size());
} catch (Exception e) {
log.errorf(e, "Failed to cleanup completed transactions: %s", e.getMessage());
}
}
private void updateLastPrunedTxId(final long txId, Address address) {
if (txId > globalMaxPrunedTxId) {
globalMaxPrunedTxId = txId;
}
nodeMaxPrunedTxIds.compute(address, new EquivalentConcurrentHashMapV8.BiFun() {
@Override
public Long apply(Address address, Long nodeMaxPrunedTxId) {
if (nodeMaxPrunedTxId != null && txId <= nodeMaxPrunedTxId) {
return nodeMaxPrunedTxId;
}
return txId;
}
});
}
}
}
