/**
* @param updateSeq Update sequence.
* @return {@code True} if entry has been transitioned to state EVICTED.
*/
boolean tryEvict(boolean updateSeq) {
if (state.getReference() != RENTING || state.getStamp() != 0 || groupReserved()) return false;
// Attempt to evict partition entries from cache.
clearAll();
if (map.isEmpty() && state.compareAndSet(RENTING, EVICTED, 0, 0)) {
if (log.isDebugEnabled()) log.debug("Evicted partition: " + this);
if (!GridQueryProcessor.isEnabled(cctx.config())) clearSwap();
if (cctx.isDrEnabled()) cctx.dr().partitionEvicted(id);
cctx.dataStructures().onPartitionEvicted(id);
rent.onDone();
((GridDhtPreloader) cctx.preloader()).onPartitionEvicted(this, updateSeq);
clearDeferredDeletes();
return true;
}
return false;
}
/**
* @param updateSeq Update sequence.
* @return Future for evict attempt.
*/
IgniteInternalFuture<Boolean> tryEvictAsync(boolean updateSeq) {
if (map.isEmpty()
&& !GridQueryProcessor.isEnabled(cctx.config())
&& state.compareAndSet(RENTING, EVICTED, 0, 0)) {
if (log.isDebugEnabled()) log.debug("Evicted partition: " + this);
clearSwap();
if (cctx.isDrEnabled()) cctx.dr().partitionEvicted(id);
cctx.dataStructures().onPartitionEvicted(id);
rent.onDone();
((GridDhtPreloader) cctx.preloader()).onPartitionEvicted(this, updateSeq);
clearDeferredDeletes();
return new GridFinishedFuture<>(true);
}
return cctx.closures()
.callLocalSafe(
new GPC<Boolean>() {
@Override
public Boolean call() {
return tryEvict(true);
}
}, /*system pool*/
true);
}
/** @param entry Entry to add. */
void onAdded(GridDhtCacheEntry entry) {
GridDhtPartitionState state = state();
if (state == EVICTED)
throw new GridDhtInvalidPartitionException(
id, "Adding entry to invalid partition [part=" + id + ']');
map.put(entry.key(), entry);
if (!entry.isInternal()) mapPubSize.increment();
}
/** @param entry Entry to remove. */
@SuppressWarnings("SynchronizationOnLocalVariableOrMethodParameter")
void onRemoved(GridDhtCacheEntry entry) {
assert entry.obsolete();
// Make sure to remove exactly this entry.
synchronized (entry) {
map.remove(entry.key(), entry);
if (!entry.isInternal() && !entry.deleted()) mapPubSize.decrement();
}
// Attempt to evict.
tryEvict(true);
}
/** {@inheritDoc} */
@Override
public String toString() {
return S.toString(
GridDhtLocalPartition.class,
this,
"state",
state(),
"reservations",
reservations(),
"empty",
map.isEmpty(),
"createTime",
U.format(createTime),
"mapPubSize",
mapPubSize);
}
/** Clears values for this partition. */
private void clearAll() {
GridCacheVersion clearVer = cctx.versions().next();
boolean swap = cctx.isSwapOrOffheapEnabled();
boolean rec = cctx.events().isRecordable(EVT_CACHE_REBALANCE_OBJECT_UNLOADED);
Iterator<GridDhtCacheEntry> it = map.values().iterator();
GridCloseableIterator<Map.Entry<byte[], GridCacheSwapEntry>> swapIt = null;
if (swap
&& GridQueryProcessor.isEnabled(cctx.config())) { // Indexing needs to unswap cache values.
Iterator<GridDhtCacheEntry> unswapIt = null;
try {
swapIt = cctx.swap().iterator(id);
unswapIt = unswapIterator(swapIt);
} catch (Exception e) {
U.error(log, "Failed to clear swap for evicted partition: " + this, e);
}
if (unswapIt != null) it = F.concat(it, unswapIt);
}
try {
while (it.hasNext()) {
GridDhtCacheEntry cached = it.next();
try {
if (cached.clearInternal(clearVer, swap)) {
map.remove(cached.key(), cached);
if (!cached.isInternal()) {
mapPubSize.decrement();
if (rec)
cctx.events()
.addEvent(
cached.partition(),
cached.key(),
cctx.localNodeId(),
(IgniteUuid) null,
null,
EVT_CACHE_REBALANCE_OBJECT_UNLOADED,
null,
false,
cached.rawGet(),
cached.hasValue(),
null,
null,
null);
}
}
} catch (IgniteCheckedException e) {
U.error(log, "Failed to clear cache entry for evicted partition: " + cached, e);
}
}
} finally {
U.close(swapIt, log);
}
}
/** @return Number of entries in this partition (constant-time method). */
public int size() {
return map.size();
}
/** @return {@code True} if partition is empty. */
public boolean isEmpty() {
return map.isEmpty();
}
/** @return Entries belonging to partition. */
public Collection<GridDhtCacheEntry> entries() {
return map.values();
}
/** @return Keys belonging to partition. */
public Set<KeyCacheObject> keySet() {
return map.keySet();
}