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From sboi...@apache.org
Subject [13/47] incubator-ignite git commit: # gg-9869
Date Thu, 12 Mar 2015 13:43:48 GMT
http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerImpl.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerImpl.java
new file mode 100644
index 0000000..9ac3ec8
--- /dev/null
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerImpl.java
@@ -0,0 +1,1453 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.processors.datastream;
+
+import org.apache.ignite.*;
+import org.apache.ignite.cluster.*;
+import org.apache.ignite.events.*;
+import org.apache.ignite.internal.*;
+import org.apache.ignite.internal.cluster.*;
+import org.apache.ignite.internal.managers.communication.*;
+import org.apache.ignite.internal.managers.deployment.*;
+import org.apache.ignite.internal.managers.eventstorage.*;
+import org.apache.ignite.internal.processors.affinity.*;
+import org.apache.ignite.internal.processors.cache.*;
+import org.apache.ignite.internal.processors.cache.distributed.dht.*;
+import org.apache.ignite.internal.processors.cache.version.*;
+import org.apache.ignite.internal.processors.dr.*;
+import org.apache.ignite.internal.processors.portable.*;
+import org.apache.ignite.internal.util.*;
+import org.apache.ignite.internal.util.future.*;
+import org.apache.ignite.internal.util.lang.*;
+import org.apache.ignite.internal.util.tostring.*;
+import org.apache.ignite.internal.util.typedef.*;
+import org.apache.ignite.internal.util.typedef.internal.*;
+import org.apache.ignite.lang.*;
+import org.jdk8.backport.*;
+import org.jetbrains.annotations.*;
+
+import java.io.*;
+import java.util.*;
+import java.util.Map.*;
+import java.util.concurrent.*;
+import java.util.concurrent.atomic.*;
+
+import static org.apache.ignite.events.EventType.*;
+import static org.apache.ignite.internal.GridTopic.*;
+import static org.apache.ignite.internal.managers.communication.GridIoPolicy.*;
+
+/**
+ * Data streamer implementation.
+ */
+@SuppressWarnings("unchecked")
+public class IgniteDataStreamerImpl<K, V> implements IgniteDataStreamer<K, V>, Delayed {
+    /** Isolated updater. */
+    private static final Updater ISOLATED_UPDATER = new IsolatedUpdater();
+
+    /** Cache updater. */
+    private Updater<K, V> updater = ISOLATED_UPDATER;
+
+    /** */
+    private byte[] updaterBytes;
+
+    /** Max remap count before issuing an error. */
+    private static final int DFLT_MAX_REMAP_CNT = 32;
+
+    /** Log reference. */
+    private static final AtomicReference<IgniteLogger> logRef = new AtomicReference<>();
+
+    /** Cache name ({@code null} for default cache). */
+    private final String cacheName;
+
+    /** Portable enabled flag. */
+    private final boolean portableEnabled;
+
+    /**
+     *  If {@code true} then data will be transferred in compact format (only keys and values).
+     *  Otherwise full map entry will be transferred (this is requires by DR internal logic).
+     */
+    private final boolean compact;
+
+    /** Per-node buffer size. */
+    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
+    private int bufSize = DFLT_PER_NODE_BUFFER_SIZE;
+
+    /** */
+    private int parallelOps = DFLT_MAX_PARALLEL_OPS;
+
+    /** */
+    private long autoFlushFreq;
+
+    /** Mapping. */
+    @GridToStringInclude
+    private ConcurrentMap<UUID, Buffer> bufMappings = new ConcurrentHashMap8<>();
+
+    /** Logger. */
+    private IgniteLogger log;
+
+    /** Discovery listener. */
+    private final GridLocalEventListener discoLsnr;
+
+    /** Context. */
+    private final GridKernalContext ctx;
+
+    /** Communication topic for responses. */
+    private final Object topic;
+
+    /** */
+    private byte[] topicBytes;
+
+    /** {@code True} if data streamer has been cancelled. */
+    private volatile boolean cancelled;
+
+    /** Active futures of this data streamer. */
+    @GridToStringInclude
+    private final Collection<IgniteInternalFuture<?>> activeFuts = new GridConcurrentHashSet<>();
+
+    /** Closure to remove from active futures. */
+    @GridToStringExclude
+    private final IgniteInClosure<IgniteInternalFuture<?>> rmvActiveFut = new IgniteInClosure<IgniteInternalFuture<?>>() {
+        @Override public void apply(IgniteInternalFuture<?> t) {
+            boolean rmv = activeFuts.remove(t);
+
+            assert rmv;
+        }
+    };
+
+    /** Job peer deploy aware. */
+    private volatile GridPeerDeployAware jobPda;
+
+    /** Deployment class. */
+    private Class<?> depCls;
+
+    /** Future to track loading finish. */
+    private final GridFutureAdapter<?> fut;
+
+    /** Public API future to track loading finish. */
+    private final IgniteFuture<?> publicFut;
+
+    /** Busy lock. */
+    private final GridSpinBusyLock busyLock = new GridSpinBusyLock();
+
+    /** Closed flag. */
+    private final AtomicBoolean closed = new AtomicBoolean();
+
+    /** */
+    private volatile long lastFlushTime = U.currentTimeMillis();
+
+    /** */
+    private final DelayQueue<IgniteDataStreamerImpl<K, V>> flushQ;
+
+    /** */
+    private boolean skipStore;
+
+    /** */
+    private int maxRemapCnt = DFLT_MAX_REMAP_CNT;
+
+    /**
+     * @param ctx Grid kernal context.
+     * @param cacheName Cache name.
+     * @param flushQ Flush queue.
+     * @param compact If {@code true} data is transferred in compact mode (only keys and values).
+     *                Otherwise full map entry will be transferred (this is required by DR internal logic).
+     */
+    public IgniteDataStreamerImpl(
+        final GridKernalContext ctx,
+        @Nullable final String cacheName,
+        DelayQueue<IgniteDataStreamerImpl<K, V>> flushQ,
+        boolean compact
+    ) {
+        assert ctx != null;
+
+        this.ctx = ctx;
+        this.cacheName = cacheName;
+        this.flushQ = flushQ;
+        this.compact = compact;
+
+        log = U.logger(ctx, logRef, IgniteDataStreamerImpl.class);
+
+        ClusterNode node = F.first(ctx.grid().cluster().forCacheNodes(cacheName).nodes());
+
+        if (node == null)
+            throw new IllegalStateException("Cache doesn't exist: " + cacheName);
+
+        portableEnabled = ctx.portable().portableEnabled(node, cacheName);
+
+        discoLsnr = new GridLocalEventListener() {
+            @Override public void onEvent(Event evt) {
+                assert evt.type() == EVT_NODE_FAILED || evt.type() == EVT_NODE_LEFT;
+
+                DiscoveryEvent discoEvt = (DiscoveryEvent)evt;
+
+                UUID id = discoEvt.eventNode().id();
+
+                // Remap regular mappings.
+                final Buffer buf = bufMappings.remove(id);
+
+                if (buf != null) {
+                    // Only async notification is possible since
+                    // discovery thread may be trapped otherwise.
+                    ctx.closure().callLocalSafe(
+                        new Callable<Object>() {
+                            @Override public Object call() throws Exception {
+                                buf.onNodeLeft();
+
+                                return null;
+                            }
+                        },
+                        true /* system pool */
+                    );
+                }
+            }
+        };
+
+        ctx.event().addLocalEventListener(discoLsnr, EVT_NODE_FAILED, EVT_NODE_LEFT);
+
+        // Generate unique topic for this loader.
+        topic = TOPIC_DATALOAD.topic(IgniteUuid.fromUuid(ctx.localNodeId()));
+
+        ctx.io().addMessageListener(topic, new GridMessageListener() {
+            @Override public void onMessage(UUID nodeId, Object msg) {
+                assert msg instanceof GridDataLoadResponse;
+
+                GridDataLoadResponse res = (GridDataLoadResponse)msg;
+
+                if (log.isDebugEnabled())
+                    log.debug("Received data load response: " + res);
+
+                Buffer buf = bufMappings.get(nodeId);
+
+                if (buf != null)
+                    buf.onResponse(res);
+
+                else if (log.isDebugEnabled())
+                    log.debug("Ignoring response since node has left [nodeId=" + nodeId + ", ");
+            }
+        });
+
+        if (log.isDebugEnabled())
+            log.debug("Added response listener within topic: " + topic);
+
+        fut = new IgniteDataStreamerFuture(ctx, this);
+
+        publicFut = new IgniteFutureImpl<>(fut);
+    }
+
+    /**
+     * Enters busy lock.
+     */
+    private void enterBusy() {
+        if (!busyLock.enterBusy())
+            throw new IllegalStateException("Data streamer has been closed.");
+    }
+
+    /**
+     * Leaves busy lock.
+     */
+    private void leaveBusy() {
+        busyLock.leaveBusy();
+    }
+
+    /** {@inheritDoc} */
+    @Override public IgniteFuture<?> future() {
+        return publicFut;
+    }
+
+    /**
+     * @return Internal future.
+     */
+    public IgniteInternalFuture<?> internalFuture() {
+        return fut;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void deployClass(Class<?> depCls) {
+        this.depCls = depCls;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void updater(Updater<K, V> updater) {
+        A.notNull(updater, "updater");
+
+        this.updater = updater;
+    }
+
+    /** {@inheritDoc} */
+    @Override public boolean allowOverwrite() {
+        return updater != ISOLATED_UPDATER;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void allowOverwrite(boolean allow) {
+        if (allow == allowOverwrite())
+            return;
+
+        ClusterNode node = F.first(ctx.grid().cluster().forCacheNodes(cacheName).nodes());
+
+        if (node == null)
+            throw new IgniteException("Failed to get node for cache: " + cacheName);
+
+        updater = allow ? IgniteDataStreamerCacheUpdaters.<K, V>individual() : ISOLATED_UPDATER;
+    }
+
+    /** {@inheritDoc} */
+    @Override public boolean skipStore() {
+        return skipStore;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void skipStore(boolean skipStore) {
+        this.skipStore = skipStore;
+    }
+
+    /** {@inheritDoc} */
+    @Override @Nullable public String cacheName() {
+        return cacheName;
+    }
+
+    /** {@inheritDoc} */
+    @Override public int perNodeBufferSize() {
+        return bufSize;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void perNodeBufferSize(int bufSize) {
+        A.ensure(bufSize > 0, "bufSize > 0");
+
+        this.bufSize = bufSize;
+    }
+
+    /** {@inheritDoc} */
+    @Override public int perNodeParallelLoadOperations() {
+        return parallelOps;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void perNodeParallelLoadOperations(int parallelOps) {
+        this.parallelOps = parallelOps;
+    }
+
+    /** {@inheritDoc} */
+    @Override public long autoFlushFrequency() {
+        return autoFlushFreq;
+    }
+
+    /** {@inheritDoc} */
+    @Override public void autoFlushFrequency(long autoFlushFreq) {
+        A.ensure(autoFlushFreq >= 0, "autoFlushFreq >= 0");
+
+        long old = this.autoFlushFreq;
+
+        if (autoFlushFreq != old) {
+            this.autoFlushFreq = autoFlushFreq;
+
+            if (autoFlushFreq != 0 && old == 0)
+                flushQ.add(this);
+            else if (autoFlushFreq == 0)
+                flushQ.remove(this);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override public IgniteFuture<?> addData(Map<K, V> entries) throws IllegalStateException {
+        A.notNull(entries, "entries");
+
+        return addData(entries.entrySet());
+    }
+
+    /** {@inheritDoc} */
+    @Override public IgniteFuture<?> addData(Collection<? extends Map.Entry<K, V>> entries) {
+        A.notEmpty(entries, "entries");
+
+        enterBusy();
+
+        try {
+            GridFutureAdapter<Object> resFut = new GridFutureAdapter<>(ctx);
+
+            resFut.listenAsync(rmvActiveFut);
+
+            activeFuts.add(resFut);
+
+            Collection<K> keys = null;
+
+            if (entries.size() > 1) {
+                keys = new GridConcurrentHashSet<>(entries.size(), U.capacity(entries.size()), 1);
+
+                for (Map.Entry<K, V> entry : entries)
+                    keys.add(entry.getKey());
+            }
+
+            load0(entries, resFut, keys, 0);
+
+            return new IgniteFutureImpl<>(resFut);
+        }
+        catch (IgniteException e) {
+            return new IgniteFinishedFutureImpl<>(ctx, e);
+        }
+        finally {
+            leaveBusy();
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override public IgniteFuture<?> addData(Map.Entry<K, V> entry) {
+        A.notNull(entry, "entry");
+
+        return addData(F.asList(entry));
+    }
+
+    /** {@inheritDoc} */
+    @Override public IgniteFuture<?> addData(K key, V val) {
+        A.notNull(key, "key");
+
+        return addData(new Entry0<>(key, val));
+    }
+
+    /** {@inheritDoc} */
+    @Override public IgniteFuture<?> removeData(K key) {
+        return addData(key, null);
+    }
+
+    /**
+     * @param entries Entries.
+     * @param resFut Result future.
+     * @param activeKeys Active keys.
+     * @param remaps Remaps count.
+     */
+    private void load0(
+        Collection<? extends Map.Entry<K, V>> entries,
+        final GridFutureAdapter<Object> resFut,
+        @Nullable final Collection<K> activeKeys,
+        final int remaps
+    ) {
+        assert entries != null;
+
+        Map<ClusterNode, Collection<Map.Entry<K, V>>> mappings = new HashMap<>();
+
+        boolean initPda = ctx.deploy().enabled() && jobPda == null;
+
+        for (Map.Entry<K, V> entry : entries) {
+            List<ClusterNode> nodes;
+
+            try {
+                K key = entry.getKey();
+
+                assert key != null;
+
+                if (initPda) {
+                    jobPda = new DataStreamerPda(key, entry.getValue(), updater);
+
+                    initPda = false;
+                }
+
+                nodes = nodes(key);
+            }
+            catch (IgniteCheckedException e) {
+                resFut.onDone(e);
+
+                return;
+            }
+
+            if (F.isEmpty(nodes)) {
+                resFut.onDone(new ClusterTopologyException("Failed to map key to node " +
+                    "(no nodes with cache found in topology) [infos=" + entries.size() +
+                    ", cacheName=" + cacheName + ']'));
+
+                return;
+            }
+
+            for (ClusterNode node : nodes) {
+                Collection<Map.Entry<K, V>> col = mappings.get(node);
+
+                if (col == null)
+                    mappings.put(node, col = new ArrayList<>());
+
+                col.add(entry);
+            }
+        }
+
+        for (final Map.Entry<ClusterNode, Collection<Map.Entry<K, V>>> e : mappings.entrySet()) {
+            final UUID nodeId = e.getKey().id();
+
+            Buffer buf = bufMappings.get(nodeId);
+
+            if (buf == null) {
+                Buffer old = bufMappings.putIfAbsent(nodeId, buf = new Buffer(e.getKey()));
+
+                if (old != null)
+                    buf = old;
+            }
+
+            final Collection<Map.Entry<K, V>> entriesForNode = e.getValue();
+
+            IgniteInClosure<IgniteInternalFuture<?>> lsnr = new IgniteInClosure<IgniteInternalFuture<?>>() {
+                @Override public void apply(IgniteInternalFuture<?> t) {
+                    try {
+                        t.get();
+
+                        if (activeKeys != null) {
+                            for (Map.Entry<K, V> e : entriesForNode)
+                                activeKeys.remove(e.getKey());
+
+                            if (activeKeys.isEmpty())
+                                resFut.onDone();
+                        }
+                        else {
+                            assert entriesForNode.size() == 1;
+
+                            // That has been a single key,
+                            // so complete result future right away.
+                            resFut.onDone();
+                        }
+                    }
+                    catch (IgniteCheckedException e1) {
+                        if (log.isDebugEnabled())
+                            log.debug("Future finished with error [nodeId=" + nodeId + ", err=" + e1 + ']');
+
+                        if (cancelled) {
+                            resFut.onDone(new IgniteCheckedException("Data streamer has been cancelled: " +
+                                IgniteDataStreamerImpl.this, e1));
+                        }
+                        else if (remaps + 1 > maxRemapCnt) {
+                            resFut.onDone(new IgniteCheckedException("Failed to finish operation (too many remaps): "
+                                + remaps), e1);
+                        }
+                        else
+                            load0(entriesForNode, resFut, activeKeys, remaps + 1);
+                    }
+                }
+            };
+
+            GridFutureAdapter<?> f;
+
+            try {
+                f = buf.update(entriesForNode, lsnr);
+            }
+            catch (IgniteInterruptedCheckedException e1) {
+                resFut.onDone(e1);
+
+                return;
+            }
+
+            if (ctx.discovery().node(nodeId) == null) {
+                if (bufMappings.remove(nodeId, buf))
+                    buf.onNodeLeft();
+
+                if (f != null)
+                    f.onDone(new ClusterTopologyCheckedException("Failed to wait for request completion " +
+                        "(node has left): " + nodeId));
+            }
+        }
+    }
+
+    /**
+     * @param key Key to map.
+     * @return Nodes to send requests to.
+     * @throws IgniteCheckedException If failed.
+     */
+    private List<ClusterNode> nodes(K key) throws IgniteCheckedException {
+        GridAffinityProcessor aff = ctx.affinity();
+
+        return !allowOverwrite() ? aff.mapKeyToPrimaryAndBackups(cacheName, key) :
+            Collections.singletonList(aff.mapKeyToNode(cacheName, key));
+    }
+
+    /**
+     * Performs flush.
+     *
+     * @throws IgniteCheckedException If failed.
+     */
+    private void doFlush() throws IgniteCheckedException {
+        lastFlushTime = U.currentTimeMillis();
+
+        List<IgniteInternalFuture> activeFuts0 = null;
+
+        int doneCnt = 0;
+
+        for (IgniteInternalFuture<?> f : activeFuts) {
+            if (!f.isDone()) {
+                if (activeFuts0 == null)
+                    activeFuts0 = new ArrayList<>((int)(activeFuts.size() * 1.2));
+
+                activeFuts0.add(f);
+            }
+            else {
+                f.get();
+
+                doneCnt++;
+            }
+        }
+
+        if (activeFuts0 == null || activeFuts0.isEmpty())
+            return;
+
+        while (true) {
+            Queue<IgniteInternalFuture<?>> q = null;
+
+            for (Buffer buf : bufMappings.values()) {
+                IgniteInternalFuture<?> flushFut = buf.flush();
+
+                if (flushFut != null) {
+                    if (q == null)
+                        q = new ArrayDeque<>(bufMappings.size() * 2);
+
+                    q.add(flushFut);
+                }
+            }
+
+            if (q != null) {
+                assert !q.isEmpty();
+
+                boolean err = false;
+
+                for (IgniteInternalFuture fut = q.poll(); fut != null; fut = q.poll()) {
+                    try {
+                        fut.get();
+                    }
+                    catch (IgniteCheckedException e) {
+                        if (log.isDebugEnabled())
+                            log.debug("Failed to flush buffer: " + e);
+
+                        err = true;
+                    }
+                }
+
+                if (err)
+                    // Remaps needed - flush buffers.
+                    continue;
+            }
+
+            doneCnt = 0;
+
+            for (int i = 0; i < activeFuts0.size(); i++) {
+                IgniteInternalFuture f = activeFuts0.get(i);
+
+                if (f == null)
+                    doneCnt++;
+                else if (f.isDone()) {
+                    f.get();
+
+                    doneCnt++;
+
+                    activeFuts0.set(i, null);
+                }
+                else
+                    break;
+            }
+
+            if (doneCnt == activeFuts0.size())
+                return;
+        }
+    }
+
+    /** {@inheritDoc} */
+    @SuppressWarnings("ForLoopReplaceableByForEach")
+    @Override public void flush() throws IgniteException {
+        enterBusy();
+
+        try {
+            doFlush();
+        }
+        catch (IgniteCheckedException e) {
+            throw U.convertException(e);
+        }
+        finally {
+            leaveBusy();
+        }
+    }
+
+    /**
+     * Flushes every internal buffer if buffer was flushed before passed in
+     * threshold.
+     * <p>
+     * Does not wait for result and does not fail on errors assuming that this method
+     * should be called periodically.
+     */
+    @Override public void tryFlush() throws IgniteInterruptedException {
+        if (!busyLock.enterBusy())
+            return;
+
+        try {
+            for (Buffer buf : bufMappings.values())
+                buf.flush();
+
+            lastFlushTime = U.currentTimeMillis();
+        }
+        catch (IgniteInterruptedCheckedException e) {
+            throw U.convertException(e);
+        }
+        finally {
+            leaveBusy();
+        }
+    }
+
+    /**
+     * @param cancel {@code True} to close with cancellation.
+     * @throws IgniteException If failed.
+     */
+    @Override public void close(boolean cancel) throws IgniteException {
+        try {
+            closeEx(cancel);
+        }
+        catch (IgniteCheckedException e) {
+            throw U.convertException(e);
+        }
+    }
+
+    /**
+     * @param cancel {@code True} to close with cancellation.
+     * @throws IgniteCheckedException If failed.
+     */
+    public void closeEx(boolean cancel) throws IgniteCheckedException {
+        if (!closed.compareAndSet(false, true))
+            return;
+
+        busyLock.block();
+
+        if (log.isDebugEnabled())
+            log.debug("Closing data streamer [ldr=" + this + ", cancel=" + cancel + ']');
+
+        IgniteCheckedException e = null;
+
+        try {
+            // Assuming that no methods are called on this loader after this method is called.
+            if (cancel) {
+                cancelled = true;
+
+                for (Buffer buf : bufMappings.values())
+                    buf.cancelAll();
+            }
+            else
+                doFlush();
+
+            ctx.event().removeLocalEventListener(discoLsnr);
+
+            ctx.io().removeMessageListener(topic);
+        }
+        catch (IgniteCheckedException e0) {
+            e = e0;
+        }
+
+        fut.onDone(null, e);
+
+        if (e != null)
+            throw e;
+    }
+
+    /**
+     * @return {@code true} If the loader is closed.
+     */
+    boolean isClosed() {
+        return fut.isDone();
+    }
+
+    /** {@inheritDoc} */
+    @Override public void close() throws IgniteException {
+        close(false);
+    }
+
+    /**
+     * @return Max remap count.
+     */
+    public int maxRemapCount() {
+        return maxRemapCnt;
+    }
+
+    /**
+     * @param maxRemapCnt New max remap count.
+     */
+    public void maxRemapCount(int maxRemapCnt) {
+        this.maxRemapCnt = maxRemapCnt;
+    }
+
+    /** {@inheritDoc} */
+    @Override public String toString() {
+        return S.toString(IgniteDataStreamerImpl.class, this);
+    }
+
+    /** {@inheritDoc} */
+    @Override public long getDelay(TimeUnit unit) {
+        return unit.convert(nextFlushTime() - U.currentTimeMillis(), TimeUnit.MILLISECONDS);
+    }
+
+    /**
+     * @return Next flush time.
+     */
+    private long nextFlushTime() {
+        return lastFlushTime + autoFlushFreq;
+    }
+
+    /** {@inheritDoc} */
+    @Override public int compareTo(Delayed o) {
+        return nextFlushTime() > ((IgniteDataStreamerImpl)o).nextFlushTime() ? 1 : -1;
+    }
+
+    /**
+     *
+     */
+    private class Buffer {
+        /** Node. */
+        private final ClusterNode node;
+
+        /** Active futures. */
+        private final Collection<IgniteInternalFuture<Object>> locFuts;
+
+        /** Buffered entries. */
+        private List<Map.Entry<K, V>> entries;
+
+        /** */
+        @GridToStringExclude
+        private GridFutureAdapter<Object> curFut;
+
+        /** Local node flag. */
+        private final boolean isLocNode;
+
+        /** ID generator. */
+        private final AtomicLong idGen = new AtomicLong();
+
+        /** Active futures. */
+        private final ConcurrentMap<Long, GridFutureAdapter<Object>> reqs;
+
+        /** */
+        private final Semaphore sem;
+
+        /** Closure to signal on task finish. */
+        @GridToStringExclude
+        private final IgniteInClosure<IgniteInternalFuture<Object>> signalC = new IgniteInClosure<IgniteInternalFuture<Object>>() {
+            @Override public void apply(IgniteInternalFuture<Object> t) {
+                signalTaskFinished(t);
+            }
+        };
+
+        /**
+         * @param node Node.
+         */
+        Buffer(ClusterNode node) {
+            assert node != null;
+
+            this.node = node;
+
+            locFuts = new GridConcurrentHashSet<>();
+            reqs = new ConcurrentHashMap8<>();
+
+            // Cache local node flag.
+            isLocNode = node.equals(ctx.discovery().localNode());
+
+            entries = newEntries();
+            curFut = new GridFutureAdapter<>(ctx);
+            curFut.listenAsync(signalC);
+
+            sem = new Semaphore(parallelOps);
+        }
+
+        /**
+         * @param newEntries Infos.
+         * @param lsnr Listener for the operation future.
+         * @throws IgniteInterruptedCheckedException If failed.
+         * @return Future for operation.
+         */
+        @Nullable GridFutureAdapter<?> update(Iterable<Map.Entry<K, V>> newEntries,
+            IgniteInClosure<IgniteInternalFuture<?>> lsnr) throws IgniteInterruptedCheckedException {
+            List<Map.Entry<K, V>> entries0 = null;
+            GridFutureAdapter<Object> curFut0;
+
+            synchronized (this) {
+                curFut0 = curFut;
+
+                curFut0.listenAsync(lsnr);
+
+                for (Map.Entry<K, V> entry : newEntries)
+                    entries.add(entry);
+
+                if (entries.size() >= bufSize) {
+                    entries0 = entries;
+
+                    entries = newEntries();
+                    curFut = new GridFutureAdapter<>(ctx);
+                    curFut.listenAsync(signalC);
+                }
+            }
+
+            if (entries0 != null) {
+                submit(entries0, curFut0);
+
+                if (cancelled)
+                    curFut0.onDone(new IgniteCheckedException("Data streamer has been cancelled: " + IgniteDataStreamerImpl.this));
+            }
+
+            return curFut0;
+        }
+
+        /**
+         * @return Fresh collection with some space for outgrowth.
+         */
+        private List<Map.Entry<K, V>> newEntries() {
+            return new ArrayList<>((int)(bufSize * 1.2));
+        }
+
+        /**
+         * @return Future if any submitted.
+         *
+         * @throws IgniteInterruptedCheckedException If thread has been interrupted.
+         */
+        @Nullable IgniteInternalFuture<?> flush() throws IgniteInterruptedCheckedException {
+            List<Map.Entry<K, V>> entries0 = null;
+            GridFutureAdapter<Object> curFut0 = null;
+
+            synchronized (this) {
+                if (!entries.isEmpty()) {
+                    entries0 = entries;
+                    curFut0 = curFut;
+
+                    entries = newEntries();
+                    curFut = new GridFutureAdapter<>(ctx);
+                    curFut.listenAsync(signalC);
+                }
+            }
+
+            if (entries0 != null)
+                submit(entries0, curFut0);
+
+            // Create compound future for this flush.
+            GridCompoundFuture<Object, Object> res = null;
+
+            for (IgniteInternalFuture<Object> f : locFuts) {
+                if (res == null)
+                    res = new GridCompoundFuture<>(ctx);
+
+                res.add(f);
+            }
+
+            for (IgniteInternalFuture<Object> f : reqs.values()) {
+                if (res == null)
+                    res = new GridCompoundFuture<>(ctx);
+
+                res.add(f);
+            }
+
+            if (res != null)
+                res.markInitialized();
+
+            return res;
+        }
+
+        /**
+         * Increments active tasks count.
+         *
+         * @throws IgniteInterruptedCheckedException If thread has been interrupted.
+         */
+        private void incrementActiveTasks() throws IgniteInterruptedCheckedException {
+            U.acquire(sem);
+        }
+
+        /**
+         * @param f Future that finished.
+         */
+        private void signalTaskFinished(IgniteInternalFuture<Object> f) {
+            assert f != null;
+
+            sem.release();
+        }
+
+        /**
+         * @param entries Entries to submit.
+         * @param curFut Current future.
+         * @throws IgniteInterruptedCheckedException If interrupted.
+         */
+        private void submit(final Collection<Map.Entry<K, V>> entries, final GridFutureAdapter<Object> curFut)
+            throws IgniteInterruptedCheckedException {
+            assert entries != null;
+            assert !entries.isEmpty();
+            assert curFut != null;
+
+            incrementActiveTasks();
+
+            IgniteInternalFuture<Object> fut;
+
+            if (isLocNode) {
+                fut = ctx.closure().callLocalSafe(
+                    new IgniteDataStreamerUpdateJob<>(ctx, log, cacheName, entries, false, skipStore, updater), false);
+
+                locFuts.add(fut);
+
+                fut.listenAsync(new IgniteInClosure<IgniteInternalFuture<Object>>() {
+                    @Override public void apply(IgniteInternalFuture<Object> t) {
+                        try {
+                            boolean rmv = locFuts.remove(t);
+
+                            assert rmv;
+
+                            curFut.onDone(t.get());
+                        }
+                        catch (IgniteCheckedException e) {
+                            curFut.onDone(e);
+                        }
+                    }
+                });
+            }
+            else {
+                byte[] entriesBytes;
+
+                try {
+                    if (compact) {
+                        entriesBytes = ctx.config().getMarshaller()
+                            .marshal(new Entries0<>(entries, portableEnabled ? ctx.portable() : null));
+                    }
+                    else
+                        entriesBytes = ctx.config().getMarshaller().marshal(entries);
+
+                    if (updaterBytes == null) {
+                        assert updater != null;
+
+                        updaterBytes = ctx.config().getMarshaller().marshal(updater);
+                    }
+
+                    if (topicBytes == null)
+                        topicBytes = ctx.config().getMarshaller().marshal(topic);
+                }
+                catch (IgniteCheckedException e) {
+                    U.error(log, "Failed to marshal (request will not be sent).", e);
+
+                    return;
+                }
+
+                GridDeployment dep = null;
+                GridPeerDeployAware jobPda0 = null;
+
+                if (ctx.deploy().enabled()) {
+                    try {
+                        jobPda0 = jobPda;
+
+                        assert jobPda0 != null;
+
+                        dep = ctx.deploy().deploy(jobPda0.deployClass(), jobPda0.classLoader());
+
+                        GridCacheAdapter<Object, Object> cache = ctx.cache().internalCache(cacheName);
+
+                        if (cache != null)
+                            cache.context().deploy().onEnter();
+                    }
+                    catch (IgniteCheckedException e) {
+                        U.error(log, "Failed to deploy class (request will not be sent): " + jobPda0.deployClass(), e);
+
+                        return;
+                    }
+
+                    if (dep == null)
+                        U.warn(log, "Failed to deploy class (request will be sent): " + jobPda0.deployClass());
+                }
+
+                long reqId = idGen.incrementAndGet();
+
+                fut = curFut;
+
+                reqs.put(reqId, (GridFutureAdapter<Object>)fut);
+
+                GridDataLoadRequest req = new GridDataLoadRequest(
+                    reqId,
+                    topicBytes,
+                    cacheName,
+                    updaterBytes,
+                    entriesBytes,
+                    true,
+                    skipStore,
+                    dep != null ? dep.deployMode() : null,
+                    dep != null ? jobPda0.deployClass().getName() : null,
+                    dep != null ? dep.userVersion() : null,
+                    dep != null ? dep.participants() : null,
+                    dep != null ? dep.classLoaderId() : null,
+                    dep == null);
+
+                try {
+                    ctx.io().send(node, TOPIC_DATALOAD, req, PUBLIC_POOL);
+
+                    if (log.isDebugEnabled())
+                        log.debug("Sent request to node [nodeId=" + node.id() + ", req=" + req + ']');
+                }
+                catch (IgniteCheckedException e) {
+                    if (ctx.discovery().alive(node) && ctx.discovery().pingNode(node.id()))
+                        ((GridFutureAdapter<Object>)fut).onDone(e);
+                    else
+                        ((GridFutureAdapter<Object>)fut).onDone(new ClusterTopologyCheckedException("Failed to send " +
+                            "request (node has left): " + node.id()));
+                }
+            }
+        }
+
+        /**
+         *
+         */
+        void onNodeLeft() {
+            assert !isLocNode;
+            assert bufMappings.get(node.id()) != this;
+
+            if (log.isDebugEnabled())
+                log.debug("Forcibly completing futures (node has left): " + node.id());
+
+            Exception e = new ClusterTopologyCheckedException("Failed to wait for request completion " +
+                "(node has left): " + node.id());
+
+            for (GridFutureAdapter<Object> f : reqs.values())
+                f.onDone(e);
+
+            // Make sure to complete current future.
+            GridFutureAdapter<Object> curFut0;
+
+            synchronized (this) {
+                curFut0 = curFut;
+            }
+
+            curFut0.onDone(e);
+        }
+
+        /**
+         * @param res Response.
+         */
+        void onResponse(GridDataLoadResponse res) {
+            if (log.isDebugEnabled())
+                log.debug("Received data load response: " + res);
+
+            GridFutureAdapter<?> f = reqs.remove(res.requestId());
+
+            if (f == null) {
+                if (log.isDebugEnabled())
+                    log.debug("Future for request has not been found: " + res.requestId());
+
+                return;
+            }
+
+            Throwable err = null;
+
+            byte[] errBytes = res.errorBytes();
+
+            if (errBytes != null) {
+                try {
+                    GridPeerDeployAware jobPda0 = jobPda;
+
+                    err = ctx.config().getMarshaller().unmarshal(
+                        errBytes,
+                        jobPda0 != null ? jobPda0.classLoader() : U.gridClassLoader());
+                }
+                catch (IgniteCheckedException e) {
+                    f.onDone(null, new IgniteCheckedException("Failed to unmarshal response.", e));
+
+                    return;
+                }
+            }
+
+            f.onDone(null, err);
+
+            if (log.isDebugEnabled())
+                log.debug("Finished future [fut=" + f + ", reqId=" + res.requestId() + ", err=" + err + ']');
+        }
+
+        /**
+         *
+         */
+        void cancelAll() {
+            IgniteCheckedException err = new IgniteCheckedException("Data streamer has been cancelled: " + IgniteDataStreamerImpl.this);
+
+            for (IgniteInternalFuture<?> f : locFuts) {
+                try {
+                    f.cancel();
+                }
+                catch (IgniteCheckedException e) {
+                    U.error(log, "Failed to cancel mini-future.", e);
+                }
+            }
+
+            for (GridFutureAdapter<?> f : reqs.values())
+                f.onDone(err);
+        }
+
+        /** {@inheritDoc} */
+        @Override public String toString() {
+            int size;
+
+            synchronized (this) {
+                size = entries.size();
+            }
+
+            return S.toString(Buffer.class, this,
+                "entriesCnt", size,
+                "locFutsSize", locFuts.size(),
+                "reqsSize", reqs.size());
+        }
+    }
+
+    /**
+     * Data streamer peer-deploy aware.
+     */
+    private class DataStreamerPda implements GridPeerDeployAware {
+        /** */
+        private static final long serialVersionUID = 0L;
+
+        /** Deploy class. */
+        private Class<?> cls;
+
+        /** Class loader. */
+        private ClassLoader ldr;
+
+        /** Collection of objects to detect deploy class and class loader. */
+        private Collection<Object> objs;
+
+        /**
+         * Constructs data streamer peer-deploy aware.
+         *
+         * @param objs Collection of objects to detect deploy class and class loader.
+         */
+        private DataStreamerPda(Object... objs) {
+            this.objs = Arrays.asList(objs);
+        }
+
+        /** {@inheritDoc} */
+        @Override public Class<?> deployClass() {
+            if (cls == null) {
+                Class<?> cls0 = null;
+
+                if (depCls != null)
+                    cls0 = depCls;
+                else {
+                    for (Iterator<Object> it = objs.iterator(); (cls0 == null || U.isJdk(cls0)) && it.hasNext();) {
+                        Object o = it.next();
+
+                        if (o != null)
+                            cls0 = U.detectClass(o);
+                    }
+
+                    if (cls0 == null || U.isJdk(cls0))
+                        cls0 = IgniteDataStreamerImpl.class;
+                }
+
+                assert cls0 != null : "Failed to detect deploy class [objs=" + objs + ']';
+
+                cls = cls0;
+            }
+
+            return cls;
+        }
+
+        /** {@inheritDoc} */
+        @Override public ClassLoader classLoader() {
+            if (ldr == null) {
+                ClassLoader ldr0 = deployClass().getClassLoader();
+
+                // Safety.
+                if (ldr0 == null)
+                    ldr0 = U.gridClassLoader();
+
+                assert ldr0 != null : "Failed to detect classloader [objs=" + objs + ']';
+
+                ldr = ldr0;
+            }
+
+            return ldr;
+        }
+    }
+
+    /**
+     * Entry.
+     */
+    private static class Entry0<K, V> implements Map.Entry<K, V>, Externalizable {
+        /** */
+        private static final long serialVersionUID = 0L;
+
+        /** */
+        private K key;
+
+        /** */
+        private V val;
+
+        /**
+         * @param key Key.
+         * @param val Value.
+         */
+        private Entry0(K key, @Nullable V val) {
+            assert key != null;
+
+            this.key = key;
+            this.val = val;
+        }
+
+        /**
+         * For {@link Externalizable}.
+         */
+        @SuppressWarnings("UnusedDeclaration")
+        public Entry0() {
+            // No-op.
+        }
+
+        /** {@inheritDoc} */
+        @Override public K getKey() {
+            return key;
+        }
+
+        /** {@inheritDoc} */
+        @Override public V getValue() {
+            return val;
+        }
+
+        /** {@inheritDoc} */
+        @Override public V setValue(V val) {
+            V old = this.val;
+
+            this.val = val;
+
+            return old;
+        }
+
+        /** {@inheritDoc} */
+        @Override public void writeExternal(ObjectOutput out) throws IOException {
+            out.writeObject(key);
+            out.writeObject(val);
+        }
+
+        /** {@inheritDoc} */
+        @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+            key = (K)in.readObject();
+            val = (V)in.readObject();
+        }
+    }
+
+    /**
+     * Wrapper list with special compact serialization of map entries.
+     */
+    private static class Entries0<K, V> extends AbstractCollection<Map.Entry<K, V>> implements Externalizable {
+        /** */
+        private static final long serialVersionUID = 0L;
+
+        /**  Wrapped delegate. */
+        private Collection<Map.Entry<K, V>> delegate;
+
+        /** Optional portable processor for converting values. */
+        private GridPortableProcessor portable;
+
+        /**
+         * @param delegate Delegate.
+         * @param portable Portable processor.
+         */
+        private Entries0(Collection<Map.Entry<K, V>> delegate, GridPortableProcessor portable) {
+            this.delegate = delegate;
+            this.portable = portable;
+        }
+
+        /**
+         * For {@link Externalizable}.
+         */
+        public Entries0() {
+            // No-op.
+        }
+
+        /** {@inheritDoc} */
+        @Override public Iterator<Entry<K, V>> iterator() {
+            return delegate.iterator();
+        }
+
+        /** {@inheritDoc} */
+        @Override public int size() {
+            return delegate.size();
+        }
+
+        /** {@inheritDoc} */
+        @Override public void writeExternal(ObjectOutput out) throws IOException {
+            out.writeInt(delegate.size());
+
+            boolean portableEnabled = portable != null;
+
+            for (Map.Entry<K, V> entry : delegate) {
+                if (portableEnabled) {
+                    out.writeObject(portable.marshalToPortable(entry.getKey()));
+                    out.writeObject(portable.marshalToPortable(entry.getValue()));
+                }
+                else {
+                    out.writeObject(entry.getKey());
+                    out.writeObject(entry.getValue());
+                }
+            }
+        }
+
+        /** {@inheritDoc} */
+        @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+            int sz = in.readInt();
+
+            delegate = new ArrayList<>(sz);
+
+            for (int i = 0; i < sz; i++) {
+                Object k = in.readObject();
+                Object v = in.readObject();
+
+                delegate.add(new Entry0<>((K)k, (V)v));
+            }
+        }
+    }
+
+    /**
+     * Isolated updater which only loads entry initial value.
+     */
+    private static class IsolatedUpdater<K, V> implements Updater<K, V> {
+        /** */
+        private static final long serialVersionUID = 0L;
+
+        /** {@inheritDoc} */
+        @Override public void update(IgniteCache<K, V> cache, Collection<Map.Entry<K, V>> entries) {
+            IgniteCacheProxy<K, V> proxy = (IgniteCacheProxy<K, V>)cache;
+
+            GridCacheAdapter<K, V> internalCache = proxy.context().cache();
+
+            if (internalCache.isNear())
+                internalCache = internalCache.context().near().dht();
+
+            GridCacheContext<K, V> cctx = internalCache.context();
+
+            long topVer = cctx.affinity().affinityTopologyVersion();
+
+            GridCacheVersion ver = cctx.versions().next(topVer);
+
+            boolean portable = cctx.portableEnabled();
+
+            for (Map.Entry<K, V> e : entries) {
+                try {
+                    K key = e.getKey();
+                    V val = e.getValue();
+
+                    if (portable) {
+                        key = (K)cctx.marshalToPortable(key);
+                        val = (V)cctx.marshalToPortable(val);
+                    }
+
+                    GridCacheEntryEx<K, V> entry = internalCache.entryEx(key, topVer);
+
+                    entry.unswap(true, false);
+
+                    entry.initialValue(val, null, ver, CU.TTL_ETERNAL, CU.EXPIRE_TIME_ETERNAL, false, topVer,
+                        GridDrType.DR_LOAD);
+
+                    cctx.evicts().touch(entry, topVer);
+                }
+                catch (GridDhtInvalidPartitionException | GridCacheEntryRemovedException ignored) {
+                    // No-op.
+                }
+                catch (IgniteCheckedException ex) {
+                    IgniteLogger log = cache.unwrap(Ignite.class).log();
+
+                    U.error(log, "Failed to set initial value for cache entry: " + e, ex);
+                }
+            }
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerProcessor.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerProcessor.java
new file mode 100644
index 0000000..9dd4a8e
--- /dev/null
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerProcessor.java
@@ -0,0 +1,316 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.processors.datastream;
+
+import org.apache.ignite.*;
+import org.apache.ignite.internal.*;
+import org.apache.ignite.internal.managers.communication.*;
+import org.apache.ignite.internal.managers.deployment.*;
+import org.apache.ignite.internal.processors.*;
+import org.apache.ignite.internal.util.*;
+import org.apache.ignite.internal.util.typedef.*;
+import org.apache.ignite.internal.util.typedef.internal.*;
+import org.apache.ignite.internal.util.worker.*;
+import org.apache.ignite.marshaller.*;
+import org.apache.ignite.thread.*;
+import org.jetbrains.annotations.*;
+
+import java.util.*;
+import java.util.concurrent.*;
+
+import static org.apache.ignite.internal.GridTopic.*;
+import static org.apache.ignite.internal.managers.communication.GridIoPolicy.*;
+
+/**
+ *
+ */
+public class IgniteDataStreamerProcessor<K, V> extends GridProcessorAdapter {
+    /** Loaders map (access is not supposed to be highly concurrent). */
+    private Collection<IgniteDataStreamerImpl> ldrs = new GridConcurrentHashSet<>();
+
+    /** Busy lock. */
+    private final GridSpinBusyLock busyLock = new GridSpinBusyLock();
+
+    /** Flushing thread. */
+    private Thread flusher;
+
+    /** */
+    private final DelayQueue<IgniteDataStreamerImpl<K, V>> flushQ = new DelayQueue<>();
+
+    /** Marshaller. */
+    private final Marshaller marsh;
+
+    /**
+     * @param ctx Kernal context.
+     */
+    public IgniteDataStreamerProcessor(GridKernalContext ctx) {
+        super(ctx);
+
+        ctx.io().addMessageListener(TOPIC_DATALOAD, new GridMessageListener() {
+            @Override public void onMessage(UUID nodeId, Object msg) {
+                assert msg instanceof GridDataLoadRequest;
+
+                processDataLoadRequest(nodeId, (GridDataLoadRequest)msg);
+            }
+        });
+
+        marsh = ctx.config().getMarshaller();
+    }
+
+    /** {@inheritDoc} */
+    @Override public void start() throws IgniteCheckedException {
+        if (ctx.config().isDaemon())
+            return;
+
+        flusher = new IgniteThread(new GridWorker(ctx.gridName(), "grid-data-loader-flusher", log) {
+            @Override protected void body() throws InterruptedException {
+                while (!isCancelled()) {
+                    IgniteDataStreamerImpl<K, V> ldr = flushQ.take();
+
+                    if (!busyLock.enterBusy())
+                        return;
+
+                    try {
+                        if (ldr.isClosed())
+                            continue;
+
+                        ldr.tryFlush();
+
+                        flushQ.offer(ldr);
+                    }
+                    finally {
+                        busyLock.leaveBusy();
+                    }
+                }
+            }
+        });
+
+        flusher.start();
+
+        if (log.isDebugEnabled())
+            log.debug("Started data streamer processor.");
+    }
+
+    /** {@inheritDoc} */
+    @Override public void onKernalStop(boolean cancel) {
+        if (ctx.config().isDaemon())
+            return;
+
+        ctx.io().removeMessageListener(TOPIC_DATALOAD);
+
+        busyLock.block();
+
+        U.interrupt(flusher);
+        U.join(flusher, log);
+
+        for (IgniteDataStreamerImpl<?, ?> ldr : ldrs) {
+            if (log.isDebugEnabled())
+                log.debug("Closing active data streamer on grid stop [ldr=" + ldr + ", cancel=" + cancel + ']');
+
+            try {
+                ldr.closeEx(cancel);
+            }
+            catch (IgniteInterruptedCheckedException e) {
+                U.warn(log, "Interrupted while waiting for completion of the data streamer: " + ldr, e);
+            }
+            catch (IgniteCheckedException e) {
+                U.error(log, "Failed to close data streamer: " + ldr, e);
+            }
+        }
+
+        if (log.isDebugEnabled())
+            log.debug("Stopped data streamer processor.");
+    }
+
+    /**
+     * @param cacheName Cache name ({@code null} for default cache).
+     * @param compact {@code true} if data streamer should transfer data in compact format.
+     * @return Data streamer.
+     */
+    public IgniteDataStreamerImpl<K, V> dataStreamer(@Nullable String cacheName, boolean compact) {
+        if (!busyLock.enterBusy())
+            throw new IllegalStateException("Failed to create data streamer (grid is stopping).");
+
+        try {
+            final IgniteDataStreamerImpl<K, V> ldr = new IgniteDataStreamerImpl<>(ctx, cacheName, flushQ, compact);
+
+            ldrs.add(ldr);
+
+            ldr.internalFuture().listenAsync(new CI1<IgniteInternalFuture<?>>() {
+                @Override public void apply(IgniteInternalFuture<?> f) {
+                    boolean b = ldrs.remove(ldr);
+
+                    assert b : "Loader has not been added to set: " + ldr;
+
+                    if (log.isDebugEnabled())
+                        log.debug("Loader has been completed: " + ldr);
+                }
+            });
+
+            return ldr;
+        }
+        finally {
+            busyLock.leaveBusy();
+        }
+    }
+
+    /**
+     * @param cacheName Cache name ({@code null} for default cache).
+     * @return Data streamer.
+     */
+    public IgniteDataStreamer<K, V> dataStreamer(@Nullable String cacheName) {
+        return dataStreamer(cacheName, true);
+    }
+
+    /**
+     * @param nodeId Sender ID.
+     * @param req Request.
+     */
+    private void processDataLoadRequest(UUID nodeId, GridDataLoadRequest req) {
+        if (!busyLock.enterBusy()) {
+            if (log.isDebugEnabled())
+                log.debug("Ignoring data load request (node is stopping): " + req);
+
+            return;
+        }
+
+        try {
+            if (log.isDebugEnabled())
+                log.debug("Processing data load request: " + req);
+
+            Object topic;
+
+            try {
+                topic = marsh.unmarshal(req.responseTopicBytes(), null);
+            }
+            catch (IgniteCheckedException e) {
+                U.error(log, "Failed to unmarshal topic from request: " + req, e);
+
+                return;
+            }
+
+            ClassLoader clsLdr;
+
+            if (req.forceLocalDeployment())
+                clsLdr = U.gridClassLoader();
+            else {
+                GridDeployment dep = ctx.deploy().getGlobalDeployment(
+                    req.deploymentMode(),
+                    req.sampleClassName(),
+                    req.sampleClassName(),
+                    req.userVersion(),
+                    nodeId,
+                    req.classLoaderId(),
+                    req.participants(),
+                    null);
+
+                if (dep == null) {
+                    sendResponse(nodeId,
+                        topic,
+                        req.requestId(),
+                        new IgniteCheckedException("Failed to get deployment for request [sndId=" + nodeId +
+                            ", req=" + req + ']'),
+                        false);
+
+                    return;
+                }
+
+                clsLdr = dep.classLoader();
+            }
+
+            Collection<Map.Entry<K, V>> col;
+            IgniteDataStreamer.Updater<K, V> updater;
+
+            try {
+                col = marsh.unmarshal(req.collectionBytes(), clsLdr);
+                updater = marsh.unmarshal(req.updaterBytes(), clsLdr);
+            }
+            catch (IgniteCheckedException e) {
+                U.error(log, "Failed to unmarshal message [nodeId=" + nodeId + ", req=" + req + ']', e);
+
+                sendResponse(nodeId, topic, req.requestId(), e, false);
+
+                return;
+            }
+
+            IgniteDataStreamerUpdateJob<K, V> job = new IgniteDataStreamerUpdateJob<>(ctx,
+                log,
+                req.cacheName(),
+                col,
+                req.ignoreDeploymentOwnership(),
+                req.skipStore(),
+                updater);
+
+            Exception err = null;
+
+            try {
+                job.call();
+            }
+            catch (Exception e) {
+                U.error(log, "Failed to finish update job.", e);
+
+                err = e;
+            }
+
+            sendResponse(nodeId, topic, req.requestId(), err, req.forceLocalDeployment());
+        }
+        finally {
+            busyLock.leaveBusy();
+        }
+    }
+
+    /**
+     * @param nodeId Node ID.
+     * @param resTopic Response topic.
+     * @param reqId Request ID.
+     * @param err Error.
+     * @param forceLocDep Force local deployment.
+     */
+    private void sendResponse(UUID nodeId, Object resTopic, long reqId, @Nullable Throwable err,
+        boolean forceLocDep) {
+        byte[] errBytes;
+
+        try {
+            errBytes = err != null ? marsh.marshal(err) : null;
+        }
+        catch (IgniteCheckedException e) {
+            U.error(log, "Failed to marshal message.", e);
+
+            return;
+        }
+
+        GridDataLoadResponse res = new GridDataLoadResponse(reqId, errBytes, forceLocDep);
+
+        try {
+            ctx.io().send(nodeId, resTopic, res, PUBLIC_POOL);
+        }
+        catch (IgniteCheckedException e) {
+            if (ctx.discovery().alive(nodeId))
+                U.error(log, "Failed to respond to node [nodeId=" + nodeId + ", res=" + res + ']', e);
+            else if (log.isDebugEnabled())
+                log.debug("Node has left the grid: " + nodeId);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override public void printMemoryStats() {
+        X.println(">>>");
+        X.println(">>> Data streamer processor memory stats [grid=" + ctx.gridName() + ']');
+        X.println(">>>   ldrsSize: " + ldrs.size());
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerUpdateJob.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerUpdateJob.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerUpdateJob.java
new file mode 100644
index 0000000..9a2f3c3
--- /dev/null
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/IgniteDataStreamerUpdateJob.java
@@ -0,0 +1,119 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.processors.datastream;
+
+import org.apache.ignite.*;
+import org.apache.ignite.internal.*;
+import org.apache.ignite.internal.processors.cache.*;
+import org.apache.ignite.internal.util.lang.*;
+import org.jetbrains.annotations.*;
+
+import java.util.*;
+
+/**
+ * Job to put entries to cache on affinity node.
+ */
+class IgniteDataStreamerUpdateJob<K, V> implements GridPlainCallable<Object> {
+    /** */
+    private final GridKernalContext ctx;
+
+    /** */
+    private final IgniteLogger log;
+
+    /** Cache name. */
+    private final String cacheName;
+
+    /** Entries to put. */
+    private final Collection<Map.Entry<K, V>> col;
+
+    /** {@code True} to ignore deployment ownership. */
+    private final boolean ignoreDepOwnership;
+
+    /** */
+    private final boolean skipStore;
+
+    /** */
+    private final IgniteDataStreamer.Updater<K, V> updater;
+
+    /**
+     * @param ctx Context.
+     * @param log Log.
+     * @param cacheName Cache name.
+     * @param col Entries to put.
+     * @param ignoreDepOwnership {@code True} to ignore deployment ownership.
+     * @param updater Updater.
+     */
+    IgniteDataStreamerUpdateJob(
+        GridKernalContext ctx,
+        IgniteLogger log,
+        @Nullable String cacheName,
+        Collection<Map.Entry<K, V>> col,
+        boolean ignoreDepOwnership,
+        boolean skipStore,
+        IgniteDataStreamer.Updater<K, V> updater) {
+        this.ctx = ctx;
+        this.log = log;
+
+        assert col != null && !col.isEmpty();
+        assert updater != null;
+
+        this.cacheName = cacheName;
+        this.col = col;
+        this.ignoreDepOwnership = ignoreDepOwnership;
+        this.skipStore = skipStore;
+        this.updater = updater;
+    }
+
+    /** {@inheritDoc} */
+    @Override public Object call() throws Exception {
+        if (log.isDebugEnabled())
+            log.debug("Running put job [nodeId=" + ctx.localNodeId() + ", size=" + col.size() + ']');
+
+//        TODO IGNITE-77: restore adapter usage.
+//        GridCacheAdapter<Object, Object> cache = ctx.cache().internalCache(cacheName);
+//
+//        IgniteFuture<?> f = cache.context().preloader().startFuture();
+//
+//        if (!f.isDone())
+//            f.get();
+//
+//        if (ignoreDepOwnership)
+//            cache.context().deploy().ignoreOwnership(true);
+
+        IgniteCacheProxy<K, V> cache = ctx.cache().jcache(cacheName);
+
+        if (skipStore)
+            cache = (IgniteCacheProxy<K, V>)cache.withSkipStore();
+
+        if (ignoreDepOwnership)
+            cache.context().deploy().ignoreOwnership(true);
+
+        try {
+            updater.update(cache, col);
+
+            return null;
+        }
+        finally {
+            if (ignoreDepOwnership)
+                cache.context().deploy().ignoreOwnership(false);
+
+            if (log.isDebugEnabled())
+                log.debug("Update job finished on node: " + ctx.localNodeId());
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/package.html
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/package.html b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/package.html
new file mode 100644
index 0000000..1090b86
--- /dev/null
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastream/package.html
@@ -0,0 +1,24 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<body>
+    <!-- Package description. -->
+    Data streamer processor.
+</body>
+</html>

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
index 15309bb..6c922bc 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
@@ -30,7 +30,7 @@ import org.apache.ignite.internal.managers.communication.*;
 import org.apache.ignite.internal.managers.eventstorage.*;
 import org.apache.ignite.internal.processors.cache.*;
 import org.apache.ignite.internal.processors.cache.transactions.*;
-import org.apache.ignite.internal.processors.dataload.*;
+import org.apache.ignite.internal.processors.datastream.*;
 import org.apache.ignite.internal.processors.task.*;
 import org.apache.ignite.internal.util.*;
 import org.apache.ignite.internal.util.future.*;

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerImplSelfTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerImplSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerImplSelfTest.java
deleted file mode 100644
index 306e615..0000000
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerImplSelfTest.java
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.ignite.internal.processors.dataload;
-
-import org.apache.ignite.*;
-import org.apache.ignite.configuration.*;
-import org.apache.ignite.internal.util.typedef.*;
-import org.apache.ignite.internal.util.typedef.internal.*;
-import org.apache.ignite.marshaller.*;
-import org.apache.ignite.marshaller.optimized.*;
-import org.apache.ignite.spi.discovery.tcp.*;
-import org.apache.ignite.spi.discovery.tcp.ipfinder.*;
-import org.apache.ignite.spi.discovery.tcp.ipfinder.vm.*;
-import org.apache.ignite.testframework.junits.common.*;
-
-import java.io.*;
-import java.util.*;
-import java.util.concurrent.*;
-
-import static org.apache.ignite.cache.CacheMode.*;
-import static org.apache.ignite.cache.CacheWriteSynchronizationMode.*;
-
-/**
- * Tests for {@code IgniteDataStreamerImpl}.
- */
-public class IgniteDataStreamerImplSelfTest extends GridCommonAbstractTest {
-    /** IP finder. */
-    private static final TcpDiscoveryIpFinder IP_FINDER = new TcpDiscoveryVmIpFinder(true);
-
-    /** Number of keys to load via data streamer. */
-    private static final int KEYS_COUNT = 1000;
-
-    /** Started grid counter. */
-    private static int cnt;
-
-    /** {@inheritDoc} */
-    @Override protected IgniteConfiguration getConfiguration(String gridName) throws Exception {
-        IgniteConfiguration cfg = super.getConfiguration(gridName);
-
-        TcpDiscoverySpi discoSpi = new TcpDiscoverySpi();
-        discoSpi.setIpFinder(IP_FINDER);
-
-        cfg.setDiscoverySpi(discoSpi);
-
-        // Forth node goes without cache.
-        if (cnt < 4)
-            cfg.setCacheConfiguration(cacheConfiguration());
-
-        cnt++;
-
-        return cfg;
-    }
-
-    /**
-     * @throws Exception If failed.
-     */
-    public void testNullPointerExceptionUponDataStreamerClosing() throws Exception {
-        try {
-            startGrids(5);
-
-            final CyclicBarrier barrier = new CyclicBarrier(2);
-
-            multithreadedAsync(new Callable<Object>() {
-                @Override public Object call() throws Exception {
-                    U.awaitQuiet(barrier);
-
-                    G.stopAll(true);
-
-                    return null;
-                }
-            }, 1);
-
-            Ignite g4 = grid(4);
-
-            IgniteDataStreamer<Object, Object> dataLdr = g4.dataStreamer(null);
-
-            dataLdr.perNodeBufferSize(32);
-
-            for (int i = 0; i < 100000; i += 2) {
-                dataLdr.addData(i, i);
-                dataLdr.removeData(i + 1);
-            }
-
-            U.awaitQuiet(barrier);
-
-            info("Closing data streamer.");
-
-            try {
-                dataLdr.close(true);
-            }
-            catch (IllegalStateException ignore) {
-                // This is ok to ignore this exception as test is racy by it's nature -
-                // grid is stopping in different thread.
-            }
-        }
-        finally {
-            G.stopAll(true);
-        }
-    }
-
-    /**
-     * Data streamer should correctly load entries from HashMap in case of grids with more than one node
-     *  and with GridOptimizedMarshaller that requires serializable.
-     *
-     * @throws Exception If failed.
-     */
-    public void testAddDataFromMap() throws Exception {
-        try {
-            cnt = 0;
-
-            startGrids(2);
-
-            Ignite g0 = grid(0);
-
-            Marshaller marsh = g0.configuration().getMarshaller();
-
-            if (marsh instanceof OptimizedMarshaller)
-                assertTrue(((OptimizedMarshaller)marsh).isRequireSerializable());
-            else
-                fail("Expected GridOptimizedMarshaller, but found: " + marsh.getClass().getName());
-
-            IgniteDataStreamer<Integer, String> dataLdr = g0.dataStreamer(null);
-
-            Map<Integer, String> map = U.newHashMap(KEYS_COUNT);
-
-            for (int i = 0; i < KEYS_COUNT; i ++)
-                map.put(i, String.valueOf(i));
-
-            dataLdr.addData(map);
-
-            dataLdr.close();
-
-            Random rnd = new Random();
-
-            IgniteCache<Integer, String> c = g0.jcache(null);
-
-            for (int i = 0; i < KEYS_COUNT; i ++) {
-                Integer k = rnd.nextInt(KEYS_COUNT);
-
-                String v = c.get(k);
-
-                assertEquals(k.toString(), v);
-            }
-        }
-        finally {
-            G.stopAll(true);
-        }
-    }
-
-    /**
-     * Gets cache configuration.
-     *
-     * @return Cache configuration.
-     */
-    private CacheConfiguration cacheConfiguration() {
-        CacheConfiguration cacheCfg = defaultCacheConfiguration();
-
-        cacheCfg.setCacheMode(PARTITIONED);
-        cacheCfg.setBackups(1);
-        cacheCfg.setWriteSynchronizationMode(FULL_SYNC);
-
-        return cacheCfg;
-    }
-
-    /**
-     *
-     */
-    private static class TestObject implements Serializable {
-        /** */
-        private int val;
-
-        /**
-         */
-        private TestObject() {
-            // No-op.
-        }
-
-        /**
-         * @param val Value.
-         */
-        private TestObject(int val) {
-            this.val = val;
-        }
-
-        public Integer val() {
-            return val;
-        }
-
-        /** {@inheritDoc} */
-        @Override public int hashCode() {
-            return val;
-        }
-
-        /** {@inheritDoc} */
-        @Override public boolean equals(Object obj) {
-            return obj instanceof TestObject && ((TestObject)obj).val == val;
-        }
-    }
-}

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/9c8217c1/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerPerformanceTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerPerformanceTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerPerformanceTest.java
deleted file mode 100644
index 22a1f97..0000000
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/dataload/IgniteDataStreamerPerformanceTest.java
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.ignite.internal.processors.dataload;
-
-import org.apache.ignite.*;
-import org.apache.ignite.configuration.*;
-import org.apache.ignite.internal.util.typedef.internal.*;
-import org.apache.ignite.spi.discovery.tcp.*;
-import org.apache.ignite.spi.discovery.tcp.ipfinder.*;
-import org.apache.ignite.spi.discovery.tcp.ipfinder.vm.*;
-import org.apache.ignite.testframework.junits.common.*;
-import org.jdk8.backport.*;
-
-import java.util.concurrent.*;
-
-import static org.apache.ignite.cache.CacheDistributionMode.*;
-import static org.apache.ignite.cache.CacheMode.*;
-import static org.apache.ignite.cache.CacheWriteSynchronizationMode.*;
-import static org.apache.ignite.events.EventType.*;
-
-/**
- * Data streamer performance test. Compares group lock data streamer to traditional lock.
- * <p>
- * Disable assertions and give at least 2 GB heap to run this test.
- */
-public class IgniteDataStreamerPerformanceTest extends GridCommonAbstractTest {
-    /** */
-    private static final TcpDiscoveryIpFinder IP_FINDER = new TcpDiscoveryVmIpFinder(true);
-
-    /** */
-    private static final int GRID_CNT = 3;
-
-    /** */
-    private static final int ENTRY_CNT = 80000;
-
-    /** */
-    private boolean useCache;
-
-    /** */
-    private String[] vals = new String[2048];
-
-    /** {@inheritDoc} */
-    @Override protected IgniteConfiguration getConfiguration(String gridName) throws Exception {
-        IgniteConfiguration cfg = super.getConfiguration(gridName);
-
-        TcpDiscoverySpi spi = new TcpDiscoverySpi();
-
-        spi.setIpFinder(IP_FINDER);
-
-        cfg.setDiscoverySpi(spi);
-
-        cfg.setIncludeProperties();
-
-        cfg.setIncludeEventTypes(EVT_TASK_FAILED, EVT_TASK_FINISHED, EVT_JOB_MAPPED);
-
-        cfg.setConnectorConfiguration(null);
-
-        cfg.setPeerClassLoadingEnabled(true);
-
-        if (useCache) {
-            CacheConfiguration cc = defaultCacheConfiguration();
-
-            cc.setCacheMode(PARTITIONED);
-
-            cc.setDistributionMode(PARTITIONED_ONLY);
-            cc.setWriteSynchronizationMode(FULL_SYNC);
-            cc.setStartSize(ENTRY_CNT / GRID_CNT);
-            cc.setSwapEnabled(false);
-
-            cc.setBackups(1);
-
-            cc.setStoreValueBytes(true);
-
-            cfg.setCacheSanityCheckEnabled(false);
-            cfg.setCacheConfiguration(cc);
-        }
-        else
-            cfg.setCacheConfiguration();
-
-        return cfg;
-    }
-
-    /** {@inheritDoc} */
-    @Override protected void beforeTestsStarted() throws Exception {
-        super.beforeTestsStarted();
-
-        for (int i = 0; i < vals.length; i++) {
-            int valLen = ThreadLocalRandom8.current().nextInt(128, 512);
-
-            StringBuilder sb = new StringBuilder();
-
-            for (int j = 0; j < valLen; j++)
-                sb.append('a' + ThreadLocalRandom8.current().nextInt(20));
-
-            vals[i] = sb.toString();
-
-            info("Value: " + vals[i]);
-        }
-    }
-
-    /**
-     * @throws Exception If failed.
-     */
-    public void testPerformance() throws Exception {
-        doTest();
-    }
-
-    /**
-     * @throws Exception If failed.
-     */
-    private void doTest() throws Exception {
-        System.gc();
-        System.gc();
-        System.gc();
-
-        try {
-            useCache = true;
-
-            startGridsMultiThreaded(GRID_CNT);
-
-            useCache = false;
-
-            Ignite ignite = startGrid();
-
-            final IgniteDataStreamer<Integer, String> ldr = ignite.dataStreamer(null);
-
-            ldr.perNodeBufferSize(8192);
-            ldr.updater(IgniteDataStreamerCacheUpdaters.<Integer, String>batchedSorted());
-            ldr.autoFlushFrequency(0);
-
-            final LongAdder cnt = new LongAdder();
-
-            long start = U.currentTimeMillis();
-
-            Thread t = new Thread(new Runnable() {
-                @SuppressWarnings("BusyWait")
-                @Override public void run() {
-                    while (true) {
-                        try {
-                            Thread.sleep(10000);
-                        }
-                        catch (InterruptedException ignored) {
-                            break;
-                        }
-
-                        info(">>> Adds/sec: " + cnt.sumThenReset() / 10);
-                    }
-                }
-            });
-
-            t.setDaemon(true);
-
-            t.start();
-
-            int threadNum = 2;//Runtime.getRuntime().availableProcessors();
-
-            multithreaded(new Callable<Object>() {
-                @SuppressWarnings("InfiniteLoopStatement")
-                @Override public Object call() throws Exception {
-                    ThreadLocalRandom8 rnd = ThreadLocalRandom8.current();
-
-                    while (true) {
-                        int i = rnd.nextInt(ENTRY_CNT);
-
-                        ldr.addData(i, vals[rnd.nextInt(vals.length)]);
-
-                        cnt.increment();
-                    }
-                }
-            }, threadNum, "loader");
-
-            info("Closing loader...");
-
-            ldr.close(false);
-
-            long duration = U.currentTimeMillis() - start;
-
-            info("Finished performance test. Duration: " + duration + "ms.");
-        }
-        finally {
-            stopAllGrids();
-        }
-    }
-}


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