belliottsmith commented on code in PR #257:
URL: https://github.com/apache/cassandra-accord/pull/257#discussion_r2505507677
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accord-core/src/main/java/accord/local/durability/DurabilityQueue.java:
##########
@@ -73,325 +86,702 @@ public class DurabilityQueue
private static final Logger logger =
LoggerFactory.getLogger(DurabilityQueue.class);
private static final ConcurrentSkipListMap<Long, Collection<Node.Id>>
WARNINGS_LOGGED = new ConcurrentSkipListMap<>();
private static final long EXHAUSTED_LOG_INTERVAL_MINUTES = 5;
- private static final int PRUNE_SIZE_THRESHOLD = 128;
+ private static final long SCHEDULING_SLACK_MICROS =
MILLISECONDS.toMicros(100);
- private final Node node;
- private int maxConcurrency = 16;
+ public interface Adapter
+ {
+ Topology currentTopology();
- private final ObjectHashSet<DurabilityResults> inProgress = new
ObjectHashSet<>();
- private final TreeMap<RoutingKey, RoutingKey> inProgressRanges = new
TreeMap<>();
- // TODO (desired): prioritise by least recently updated range
- private final Deque<Pending> pending = new ArrayDeque<>();
- private int pendingCounter, prunedAt;
+ long retryDelay(int attempts, TimeUnit units);
+ long elapsed(TimeUnit units);
+ Scheduler scheduler();
- static class Pending
- {
- final SyncPoint<Range> syncPoint;
- final @Nullable DurabilityRequest request;
- final int attempt;
+ void unregister(DurabilityRequest request);
+ void abandon(DurabilityRequest request, PartialSyncPoint syncPoint,
boolean pruned);
+ void done(DurabilityRequest request, PartialSyncPoint syncPoint);
+ void retry(DurabilityRequest request, PartialSyncPoint syncPoint);
- Pending(SyncPoint<Range> syncPoint, @Nullable DurabilityRequest
request, int attempt)
- {
- this.syncPoint = syncPoint;
- this.request = request;
- this.attempt = attempt;
- }
+ DurabilityResults execute(PartialSyncPoint syncPoint, int attempt);
}
- public DurabilityQueue(Node node)
+ public static class NodeAdapter implements Adapter
{
- this.node = node;
- }
+ final Node node;
+ public NodeAdapter(Node node) { this.node = node; }
- synchronized void submit(SyncPoint<Range> syncPoint, @Nullable
DurabilityRequest request)
- {
- if (request != null)
- request.register(syncPoint.syncId, node.elapsed(MICROSECONDS));
+ @Override public Topology currentTopology() { return
node.topology().current(); }
+ @Override public long retryDelay(int attempts, TimeUnit units) {
return node.agent().retryDurabilityDelay(node, attempts, units); }
+ @Override public long elapsed(TimeUnit units) { return
node.elapsed(units); }
+ @Override public Scheduler scheduler() { return node.scheduler(); }
+ @Override public void unregister(DurabilityRequest request) {
node.durability().unregister(request); }
- submit(syncPoint, request, 1);
- }
+ @Override public void abandon(DurabilityRequest request,
PartialSyncPoint syncPoint, boolean pruned) {}
+ @Override public void done(DurabilityRequest request, PartialSyncPoint
syncPoint) {}
- private synchronized void submit(SyncPoint<Range> syncPoint, @Nullable
DurabilityRequest request, int attempt)
- {
- SequentialAsyncExecutor executor = node.someSequentialExecutor();
- if (executor != null && inProgress.size() < maxConcurrency &&
notInProgress(syncPoint.route))
- {
- start(syncPoint, request, attempt, executor);
- }
- else
+ @Override
+ public void retry(DurabilityRequest request, PartialSyncPoint
syncPoint)
{
- ++pendingCounter;
- pending.add(new Pending(syncPoint, request, attempt));
- if (pending.size() >= PRUNE_SIZE_THRESHOLD && pendingCounter >
prunedAt)
- prune();
+ node.durability().shards().request(request,
request.stillWaiting(syncPoint.route));
}
- }
- private boolean notInProgress(Route<Range> route)
- {
- for (Range range : route)
+ @Override
+ public DurabilityResults execute(PartialSyncPoint syncPoint, int
attempt)
{
- Map.Entry<RoutingKey, RoutingKey> e =
inProgressRanges.floorEntry(range.start());
- if (e != null && e.getValue().compareTo(range.start()) > 0)
- return false;
+ return coordinateIncluding(node, syncPoint,
node.someSequentialExecutor(), attempt);
}
- return true;
}
- private void registerInProgress(SyncPoint<Range> syncPoint,
ExecuteSyncPoint.DurabilityResults submitted)
- {
- inProgress.add(submitted);
- for (Range range : syncPoint.route)
- inProgressRanges.put(range.start(), range.end());
- }
+ private static final PendingComparators BY_RANGE = new
PendingComparators();
+ private static final Comparator<Pending> BY_PRIORITY = (a, b) -> {
+ if ((a.status == ACTIVE) != (b.status == ACTIVE))
+ return a.status == ACTIVE ? -1 : 1;
+ if (a.startAt != b.startAt)
+ return a.startAt < b.startAt ? -1 : 1;
+ return a.syncPoint.syncId.compareTo(b.syncPoint.syncId);
+ };
+
+ private static final Comparator<Pending> BY_ID = (a, b) -> {
+ return a.syncPoint.syncId.compareTo(b.syncPoint.syncId);
+ };
- private void unregisterInProgress(SyncPoint<Range> syncPoint,
ExecuteSyncPoint.DurabilityResults submitted)
+ private static class PendingComparators implements
IntervalBTree.IntervalComparators<PendingRange>
{
- inProgress.remove(submitted);
- for (Range range : syncPoint.route)
+ @Override public Comparator<PendingRange> totalOrder()
{
- RoutingKey end = inProgressRanges.remove(range.start());
- Invariants.require(range.end().equals(end), "Expected exact range
to be in progress, but found different end (%s vs %s)", range.end(), end);
+ return (a, b) -> {
+ int c = a.range.compare(b.range);
+ if (c == 0) c =
a.pending.syncPoint.syncId.compareTo(b.pending.syncPoint.syncId);
+ return c;
+ };
}
+ @Override public Comparator<PendingRange> endWithEndSorter() { return
(a, b) -> a.range.end().compareTo(b.range.end()); }
+ @Override public SymmetricComparator<PendingRange>
startWithStartSeeker() { return (a, b) ->
startWithStart(a.range.start().compareTo(b.range.start())); }
+ @Override public SymmetricComparator<PendingRange>
startWithEndSeeker() { return (a, b) ->
startWithEnd(a.range.start().compareTo(b.range.end())); }
+ @Override public SymmetricComparator<PendingRange>
endWithStartSeeker() { return (a, b) ->
endWithStart(a.range.end().compareTo(b.range.start())); }
}
- private static class SortForPruning implements Comparable<SortForPruning>
+ static class PendingRange
{
final Range range;
- final SyncPoint<Range> syncPoint;
+ final Pending pending;
- SortForPruning(Range range, SyncPoint<Range> syncPoint)
+ PendingRange(Range range, Pending pending)
{
this.range = range;
- this.syncPoint = syncPoint;
+ this.pending = pending;
}
@Override
- public int compareTo(@Nonnull SortForPruning that)
+ public String toString()
{
- int c = this.range.start().compareTo(that.range.start());
- if (c == 0) c = -this.range.end().compareTo(that.range.end());
- if (c == 0) return
this.syncPoint.syncId.compareTo(that.syncPoint.syncId);
- return c;
+ return pending + "@" + range;
}
}
- private static class OverlapsForPruning
+ enum Status { QUEUED, ACTIVE, COMPLETING, RESTARTING, ABANDONED, DONE }
+
+ static class Pending extends IntrusivePriorityHeap.Node
{
- final SyncPoint<Range> syncPoint;
- final NavigableMap<TxnId, SyncPoint<Range>> overlaps = new TreeMap<>();
+ final @Nullable DurabilityRequest request;
+ PartialSyncPoint syncPoint;
+ Object[] byRange;
+
+ long startAt;
+ int attempt = 1;
+ Status status = QUEUED;
+
+ DurabilityResult achieved;
+ List<Pending> deferred;
+ Pending parent;
- private OverlapsForPruning(SyncPoint<Range> syncPoint)
+ Pending(SyncPoint syncPoint, @Nullable DurabilityRequest request, long
startAt)
{
this.syncPoint = syncPoint;
+ this.request = request;
+ this.startAt = startAt;
+ updateByRange();
}
- void add(SyncPoint<Range> overlap)
+ void updateByRange()
{
- overlaps.put(overlap.syncId, overlap);
+ List<PendingRange> pendingRanges = new
ArrayList<>(syncPoint.route.size());
+ for (Range range : syncPoint.route)
+ pendingRanges.add(new PendingRange(range, this));
+ this.byRange = IntervalBTree.build(pendingRanges, BY_RANGE);
}
- }
- private synchronized void prune()
- {
- prunedAt = pending.size();
- pendingCounter = 0;
- List<SortForPruning> sorted = new ArrayList<>();
- for (Pending p : pending)
+ @Override
+ protected boolean isInHeap()
{
- for (Range range : p.syncPoint.route)
- sorted.add(new SortForPruning(range, p.syncPoint));
+ return super.isInHeap();
}
- sorted.sort(SortForPruning::compareTo);
- Map<TxnId, OverlapsForPruning> overlaps = new TreeMap<>();
- int i = 0;
- while (i < sorted.size())
+
+ boolean isAncestor(Pending pending)
{
- SortForPruning entry = sorted.get(i);
- for (int j = i + 1; j < sorted.size() ; ++j)
- {
- SortForPruning next = sorted.get(j);
- if (next.range.start().compareTo(entry.range.end()) >= 0)
- break;
+ Pending p = parent;
+ while (p != null && p != pending)
+ p = p.parent;
+ return p != null;
+ }
- overlaps.computeIfAbsent(next.syncPoint.syncId, ignore -> new
OverlapsForPruning(next.syncPoint)).add(entry.syncPoint);
- overlaps.computeIfAbsent(entry.syncPoint.syncId, ignore -> new
OverlapsForPruning(entry.syncPoint)).add(next.syncPoint);
- }
- ++i;
+ @Override
+ public String toString()
+ {
+ return syncPoint.syncId.toString() + ":" + status;
}
- Set<TxnId> remove = new HashSet<>();
- for (OverlapsForPruning e : overlaps.values())
+ private void addDeferred(Pending add)
{
- SyncPoint<Range> syncPoint = e.syncPoint;
- Ranges supersedes =
e.overlaps.tailMap(syncPoint.syncId).values().stream().map(s ->
s.route.toRanges()).reduce(Ranges.EMPTY, Ranges::with);
- Ranges superseding =
e.overlaps.headMap(syncPoint.syncId).values().stream().map(s ->
s.route.toRanges()).reduce(Ranges.EMPTY, Ranges::with);
- if (superseding.containsAll(syncPoint.route) &&
supersedes.containsAll(syncPoint.route))
- remove.add(syncPoint.syncId);
+ Invariants.require(add.parent == null);
+ Invariants.require(status.compareTo(ACTIVE) <= 0);
+ Invariants.require(BY_PRIORITY.compare(this, add) < 0);
+ Invariants.require(deferred == null || !deferred.contains(add));
+ Invariants.require(!isAncestor(add));
+ if (deferred == null)
+ deferred = new ArrayList<>();
+ deferred.add(add);
+ add.parent = this;
}
+ private void removeDeferred(Pending remove)
+ {
+ Invariants.require(remove.status == QUEUED);
+ Invariants.require(remove.parent == this);
+ remove.parent = null;
+ boolean removed = deferred.remove(remove);
+ Invariants.require(removed);
+ if (deferred.isEmpty())
+ deferred = null;
+ }
- logger.info("Pruned {} sync points awaiting durability to {}",
pending.size(), pending.size() - remove.size());
- if (!remove.isEmpty())
+ private void unsetParent()
{
- List<Pending> newPending = new ArrayList<>(pending.size());
- for (Pending p : pending)
- {
- if (!remove.contains(p.syncPoint.syncId))
- newPending.add(p);
- }
- pending.clear();
- pending.addAll(newPending);
+ Invariants.require(parent.deferred == null);
+ parent = null;
}
}
- private void start(SyncPoint<Range> exclusiveSyncPoint, @Nullable
DurabilityRequest request, int attempt, SequentialAsyncExecutor executor)
+ // TODO (desired): prioritise by least recently updated range
+ static final class PendingQueue extends IntrusivePriorityHeap<Pending>
{
- logger.debug("{}: Awaiting durability for {}",
exclusiveSyncPoint.syncId, exclusiveSyncPoint.route.toRanges());
- DurabilityResults coordinate = coordinateIncluding(node,
exclusiveSyncPoint, executor, attempt);
- registerInProgress(exclusiveSyncPoint, coordinate);
+ final Comparator<Pending> comparator;
+
+ PendingQueue(Comparator<Pending> comparator)
+ {
+ this.comparator = comparator;
+ }
+
+ Pending poll() { heapify(); return super.pollNode(); }
+ Pending peek() { heapify(); return super.peekNode(); }
+ @Override public int compare(Pending o1, Pending o2) { return
comparator.compare(o1, o2); }
+ @Override protected void append(Pending node) { super.append(node); }
+ @Override protected void remove(Pending node) { super.remove(node); }
+ @Override protected void clear() { super.clear(); }
+ }
+
+ private final Adapter adapter;
+ private int maxConcurrency = 16;
+ private int overlapPruneThreshold = 8;
+ private int globalPruneThreshold = 256;
+
+ int activeCount;
+ int pendingCount;
+ private final PendingQueue queued = new
PendingQueue(Comparator.comparing(p -> p.startAt));
+ private Object[] pendingByRange = IntervalBTree.empty();
+ private final ArrayDeque<Pending> requeue = new ArrayDeque<>();
+
+ private long processingQueueAt = Long.MAX_VALUE;
+ private Cancellable cancelProcessingQueue;
+
+ public DurabilityQueue(Node node)
+ {
+ this.adapter = new NodeAdapter(node);
+ }
+
+ public DurabilityQueue(Adapter adapter)
+ {
+ this.adapter = adapter;
+ }
+
+ void submit(SyncPoint syncPoint, @Nullable DurabilityRequest request)
+ {
+ long nowMicros = adapter.elapsed(MICROSECONDS);
if (request != null)
- request.reportAttempt(exclusiveSyncPoint.syncId,
node.elapsed(MICROSECONDS));
+ request.register(syncPoint.syncId, nowMicros);
- coordinate.onQuorum().invoke((success, fail) -> {
- synchronized (this)
- {
- unregisterInProgress(exclusiveSyncPoint, coordinate);
- maybeSubmitPending();
- }
- });
- coordinate.onDone().invoke((success, fail) -> {
- TxnId txnId = exclusiveSyncPoint.syncId;
- Ranges ranges = exclusiveSyncPoint.route.toRanges();
+ Pending pending = new Pending(syncPoint, request, nowMicros);
+ synchronized (this)
+ {
+ register(pending);
+ enqueue(pending);
+ }
+ }
- String requestor = null;
- boolean isDone;
- if (request == null)
+ private void enqueue(Pending enqueue)
+ {
+ while (enqueue != null)
+ {
+ Invariants.require(enqueue.status == QUEUED);
+ Invariants.require(enqueue.parent == null);
+ if (enqueue.achieved != null && enqueue.request == null &&
enqueue.achieved.min.remote.compareTo(Quorum) >= 0 && fullySuperseded(enqueue))
{
- isDone = success != null && success.achievedRemote == All;
+ abandon(enqueue, true, false);
+ logger.debug("{}: already achieved quorum durability and there
are superseding durability requests pending; not retrying",
enqueue.syncPoint.syncId);
+ enqueue = requeue.poll();
+ continue;
}
- else
+
+ Conflicts conflicts = conflicts(enqueue);
+ Pending next = conflicts.next;
+ if (next != null && next != enqueue)
{
- requestor = " requested by " + request.requestedBy;
- isDone = request.isDone(ranges);
- if (!isDone && request.including != null)
+ if (BY_PRIORITY.compare(next, enqueue) <= 0)
{
- Topology topology = node.topology().current();
- SortedArrayList<Node.Id> removed =
topology.removedIds().intersecting(request.including);
- SortedArrayList<Node.Id> hardRemoved =
topology.hardRemovedIds().intersecting(request.including);
- if (!removed.isEmpty() || !hardRemoved.isEmpty())
+ next.addDeferred(enqueue);
+ enqueue = requeue.poll();
+ continue;
+ }
+
+ Invariants.require(next.status == QUEUED);
+ List<Pending> addDeferred = next.deferred;
+ next.deferred = null;
+ if (addDeferred != null)
+ {
+ setParent(enqueue.deferred, enqueue);
+ if (!enqueue.syncPoint.route.containsAll((AbstractRanges)
next.syncPoint.route))
+ {
+ int count = 0;
+ for (int i = 0 ; i < addDeferred.size() ; ++i)
+ {
+ Pending p = addDeferred.get(i);
+ if (p.syncPoint.route.intersects((AbstractRanges)
enqueue.syncPoint.route))
+ addDeferred.set(count++, p);
+ else
+ requeue(p);
+ }
+
+ if (count == 0) addDeferred = null;
+ else truncate(addDeferred, count);
+ }
+ if (addDeferred != null)
{
- String message = String.format("%s: Cannot achieve
durability requested by %s as (%s/%s) are (removed/hard removed)",
exclusiveSyncPoint.syncId, request, removed, hardRemoved);
- logger.info(message);
- node.durability().unregister(request);
- // TODO (desired): more specific exception?
- request.result.tryFailure(new
RuntimeException(message));
- return;
+ if (enqueue.deferred == null) enqueue.deferred =
addDeferred;
+ else enqueue.deferred.addAll(addDeferred);
}
}
+ if (next.parent != null)
+ next.parent.removeDeferred(next);
+ enqueue.addDeferred(next);
+ if (next.isInHeap())
+ queued.remove(next);
}
- if (fail != null)
+
+ queued.append(enqueue);
+ maybePrune(conflicts.supersedes);
+ enqueue = requeue.poll();
+ }
+
+ processQueue();
+ }
+
+ private void maybePrune(List<Pending> superseded)
+ {
+ if (!shouldPrune(superseded))
+ return;
+
+ // first remove any that have already achieved quorum and have no
associated request, or where the request has been finished
+ for (Pending p : superseded)
+ {
+ if (p.status != QUEUED) continue;
+ if (p.request != null && !p.request.isDone()) continue;
+ if (p.request == null && (p.achieved == null ||
p.achieved.min.remote.compareTo(Quorum) < 0)) continue;
+
+ if (p.parent != null)
+ p.parent.removeDeferred(p);
+ abandon(p, true, true);
+ return;
+ }
+
+ if (shouldPrune(superseded))
+ {
+ superseded.sort(BY_ID);
+ int middle = (superseded.size() - 1)/2;
+ int last = superseded.size() - 1;
+ for (int i = 0 ; i <= last ; ++i)
{
- if (logger.isTraceEnabled()) logger.trace("{}: failed awaiting
durability for {}{}.", txnId, ranges, requestor, fail);
- if (fail instanceof SyncPointErased || fail instanceof
TopologyRetiredException)
- {
- if (isDone)
- return;
-
- // we can't succeed. if this was requested, and the
request is still waiting, submit another coordination request
- // TODO (required): expand this to all unknown exception
outcomes
- if (request != null)
- restart(exclusiveSyncPoint, request, attempt + 1);
- return;
- }
+ int position = (i & 1) == 0 ? middle - i/2 : middle + (i+1)/2;
+ Pending remove = superseded.get(position);
+ if (remove.status != QUEUED) continue;
+ if (remove.request != null) continue;
+ if (remove.parent != null)
+ remove.parent.removeDeferred(remove);
+ abandon(remove, true, true);
+ return;
}
- if (!isDone)
+ }
+ }
+
+ private boolean shouldPrune(List<Pending> conflicts)
+ {
+ return conflicts.size() > overlapPruneThreshold || pendingCount >
globalPruneThreshold;
+ }
+
+ static class Conflicts
+ {
+ final Pending next;
+ final List<Pending> supersedes;
+
+ Conflicts(Pending next, List<Pending> superseded)
+ {
+ this.next = next;
+ this.supersedes = superseded;
+ }
+ }
+ private Conflicts conflicts(Pending submit)
+ {
+ List<Pending> supersedes = new ArrayList<>();
+ Pending next = null;
+ for (PendingRange range : BTree.<PendingRange>iterable(submit.byRange))
+ {
+ next = IntervalBTree.accumulate(pendingByRange, BY_RANGE, range,
(sup, sub, pr, nxt) -> {
+ Pending test = pr.pending;
+ if (test.status == QUEUED && BY_ID.compare(test, sub) < 0 &&
sub.syncPoint.route.containsAll((AbstractRanges) test.syncPoint.route))
+ sup.add(test);
+
+ if (test.status.compareTo(ACTIVE) > 0)
+ return nxt;
+
+ if (nxt == null)
+ return test;
+ return BY_PRIORITY.compare(nxt, test) <= 0 ? nxt : test;
+ }, supersedes, submit, next);
+ }
+ return new Conflicts(next, supersedes);
+ }
+
+ private Pending minConflict(List<Pending> conflicts)
+ {
+ if (conflicts.isEmpty())
+ return null;
+ Pending min = conflicts.get(0);
+ for (int i = 1 ; i < conflicts.size() ; ++i)
+ {
+ if (BY_PRIORITY.compare(min, conflicts.get(i)) > 0)
+ min = conflicts.get(i);
+ }
+ return min;
+ }
+
+ private boolean fullySuperseded(Pending submit)
+ {
+ for (PendingRange range : BTree.<PendingRange>iterable(submit.byRange))
+ {
+ Ranges missing = IntervalBTree.accumulate(pendingByRange,
BY_RANGE, range, (s, id, pr, rs) -> {
+ Pending v = pr.pending;
+ if (v.status.compareTo(ACTIVE) > 0) return rs;
+ if (v.syncPoint.syncId.compareTo(id) < 0) return rs;
+ if (s.request != null && s.request.kind == VisibilitySyncPoint
&& (v.request == null || v.request.kind != VisibilitySyncPoint)) return rs;
+ if (!rs.contains(pr.range)) return rs;
+ return rs.without(Ranges.of(pr.range));
+ }, submit, submit.syncPoint.syncId, Ranges.of(range.range));
+
+ if (!missing.isEmpty())
+ return false;
+ }
+ return true;
+ }
+
+ private void register(Pending pending)
+ {
+ ++pendingCount;
+ pendingByRange = IntervalBTree.update(pendingByRange, pending.byRange,
BY_RANGE);
+ }
+
+ private void unregister(Pending pending)
+ {
+ Invariants.require(pending.deferred == null);
+ Invariants.require(!pending.isInHeap());
+ --pendingCount;
+ pendingByRange = IntervalBTree.subtract(pendingByRange,
pending.byRange, BY_RANGE);
+ }
+
+ private void start(Pending pending)
+ {
+ logger.debug("{}: Awaiting durability for {}",
pending.syncPoint.syncId, pending.syncPoint.route.toRanges());
+ DurabilityResults coordinate = adapter.execute(pending.syncPoint,
pending.attempt);
+
+ long startedAt = pending.startAt;
+ Invariants.require(pending.status == QUEUED);
+ pending.status = ACTIVE;
+ ++activeCount;
+ if (pending.request != null)
+ pending.request.reportAttempt(pending.syncPoint.syncId,
adapter.elapsed(MICROSECONDS));
+
+ coordinate.onQuorumOrDone().invoke((success, fail) ->
completing(pending, startedAt));
+ coordinate.onDone().invoke((success, fail) -> {
+ try
{
+ completing(pending, startedAt); // should already have been
done by onQuorum, but to avoid future surprises if invoked out of order
+
+ TxnId txnId = pending.syncPoint.syncId;
+ Ranges ranges = pending.syncPoint.route.toRanges();
+ DurabilityRequest request = pending.request;
if (success != null)
- fail = success.failure;
+ {
+ if (pending.achieved == null) pending.achieved = success;
+ else pending.achieved = pending.achieved.max(success);
+ }
- if (fail instanceof Exhausted || success != null)
+ String requestor = null;
+ Ranges achieved;
+ boolean isDone;
+ if (request == null)
{
- Collection<Node.Id> failedNodes = success != null ?
success.excluding : ((Exhausted)fail).failedNodes();
- Ranges failedRanges = success != null ?
exclusiveSyncPoint.route().toRanges() : ((Exhausted)fail).failedRanges();
- boolean log = failedNodes == null;
- if (!log)
- {
- Set<Node.Id> unlogged = new HashSet<>(failedNodes);
- for (Collection<Node.Id> logged :
WARNINGS_LOGGED.tailMap(System.nanoTime() -
MINUTES.toNanos(EXHAUSTED_LOG_INTERVAL_MINUTES)).values())
- unlogged.removeAll(logged);
- log = !unlogged.isEmpty();
- }
- if (log)
+ if (success == null) achieved = Ranges.EMPTY;
+ else if (success.min.remote == All) achieved = ranges;
+ else achieved = success.achieved.foldlWithBounds((p, r, s,
e) -> p.remote == All ? r.with(Ranges.of(s.rangeFactory().newRange(s, e))) : r,
Ranges.EMPTY, ignore -> false);
+ isDone = achieved.containsAll(ranges);
+ }
+ else
+ {
+ requestor = " requested by " + request.requestedBy;
+ isDone = request.isDone(ranges);
+ achieved = request.achieved().slice(ranges, Minimal);
+ if (!isDone && request.require.including != null)
{
- logger.info("{}: Incomplete durability for {}{}. {}
were unsuccessful.", txnId, failedRanges, requestor, failedNodes == null ?
"some nodes" : failedNodes);
- WARNINGS_LOGGED.headMap(System.nanoTime() -
MINUTES.toNanos(EXHAUSTED_LOG_INTERVAL_MINUTES)).clear();
- WARNINGS_LOGGED.put(System.nanoTime(), failedNodes ==
null ? Collections.emptyList() : failedNodes);
+ Topology topology = adapter.currentTopology();
+ SortedArrayList<Node.Id> removed =
topology.removedIds().intersecting(request.require.including);
+ SortedArrayList<Node.Id> hardRemoved =
topology.hardRemovedIds().intersecting(request.require.including);
+ if (!removed.isEmpty() || !hardRemoved.isEmpty())
+ {
+ abandon(pending, false, false);
+ String message = String.format("%s: Cannot achieve
durability requested by %s as (%s/%s) are (removed/hard removed)", txnId,
request, removed, hardRemoved);
+ logger.info(message);
+ // TODO (desired): more specific exception?
+ request.result.tryFailure(new
RuntimeException(message));
+ adapter.unregister(request);
+ return;
+ }
}
}
- else
+
+ if (isDone)
{
- if (fail instanceof Timeout) logger.info("{}: Timeout
awaiting durability for {}{}", txnId, ranges, requestor, fail);
- else if (fail != null) logger.info("{}: Failed awaiting
durability for {}{}; will retry", txnId, ranges, requestor, fail);
+ done(pending);
}
+ else
+ {
+ if (success != null)
+ fail = success.failure;
+
+ if (fail != null)
+ {
+ if (logger.isTraceEnabled()) logger.trace("{}: failed
awaiting durability for {}{}.", txnId, ranges, requestor, fail);
+ if (fail instanceof SyncPointErased || fail instanceof
TopologyRetiredException)
+ {
+ if (request == null) abandon(pending, false,
false);
+ else restart(pending);
+ return;
+ }
+ }
+
+ if (fail instanceof Exhausted || success != null)
+ {
+ Collection<Node.Id> failedNodes = success != null ?
success.min.excluding : ((Exhausted)fail).failedNodes();
+ Ranges failedRanges = success != null ? ranges :
((Exhausted)fail).failedRanges();
+ boolean log = failedNodes == null;
+ if (!log)
+ {
+ Set<Node.Id> unlogged = new HashSet<>(failedNodes);
+ for (Collection<Node.Id> logged :
WARNINGS_LOGGED.tailMap(System.nanoTime() -
MINUTES.toNanos(EXHAUSTED_LOG_INTERVAL_MINUTES)).values())
+ unlogged.removeAll(logged);
+ log = !unlogged.isEmpty();
+ }
+ if (log)
+ {
+ logger.info("{}: Incomplete durability for {}{}.
{} were unsuccessful.", txnId, failedRanges, requestor, failedNodes == null ?
"some nodes" : failedNodes);
+ WARNINGS_LOGGED.headMap(System.nanoTime() -
MINUTES.toNanos(EXHAUSTED_LOG_INTERVAL_MINUTES)).clear();
+ WARNINGS_LOGGED.put(System.nanoTime(), failedNodes
== null ? Collections.emptyList() : failedNodes);
+ }
+ }
+ else
+ {
+ if (fail instanceof Timeout) logger.info("{}: Timeout
awaiting durability for {}{}", txnId, ranges, requestor, fail);
+ else if (fail != null) logger.info("{}: Failed
awaiting durability for {}{}; will retry", txnId, ranges, requestor, fail);
+ }
+
+ if (achieved.intersects(ranges))
+ {
+ unregister(pending);
+ pending.syncPoint =
pending.syncPoint.without(achieved);
+ pending.updateByRange();
+ register(pending);
+ }
- retry(exclusiveSyncPoint, request, attempt + 1);
+ retry(pending);
+ }
}
- else if (request == null)
+ finally
{
- // if request != null, the request will log the necessary
information
- logger.debug("{}: Successfully achieved durability for {}.",
txnId, ranges);
+ synchronized (this)
Review Comment:
lambdas don't have a `this` qualifier, but I can add this if it helps
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