| /* |
| * 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.iotdb.db.queryengine.execution.exchange; |
| |
| import org.apache.iotdb.db.conf.IoTDBDescriptor; |
| import org.apache.iotdb.db.queryengine.common.FragmentInstanceId; |
| import org.apache.iotdb.db.queryengine.execution.exchange.sink.LocalSinkChannel; |
| import org.apache.iotdb.db.queryengine.execution.exchange.source.LocalSourceHandle; |
| import org.apache.iotdb.db.queryengine.execution.memory.LocalMemoryManager; |
| import org.apache.iotdb.mpp.rpc.thrift.TFragmentInstanceId; |
| import org.apache.iotdb.tsfile.read.common.block.TsBlock; |
| import org.apache.iotdb.tsfile.utils.Pair; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.SettableFuture; |
| import org.apache.commons.lang3.Validate; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.annotation.concurrent.NotThreadSafe; |
| |
| import java.util.LinkedList; |
| import java.util.Queue; |
| import java.util.concurrent.ExecutorService; |
| |
| import static com.google.common.util.concurrent.Futures.immediateVoidFuture; |
| |
| /** This is not thread safe class, the caller should ensure multi-threads safety. */ |
| @NotThreadSafe |
| public class SharedTsBlockQueue { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(SharedTsBlockQueue.class); |
| |
| private final TFragmentInstanceId localFragmentInstanceId; |
| |
| private final String localPlanNodeId; |
| |
| private final String fullFragmentInstanceId; |
| |
| private final LocalMemoryManager localMemoryManager; |
| |
| private boolean noMoreTsBlocks = false; |
| |
| private long bufferRetainedSizeInBytes = 0L; |
| |
| private final Queue<TsBlock> queue = new LinkedList<>(); |
| |
| private SettableFuture<Void> blocked = SettableFuture.create(); |
| |
| /** |
| * this is completed after calling isBlocked for the first time which indicates that this queue |
| * needs to output data. |
| */ |
| private final SettableFuture<Void> canAddTsBlock = SettableFuture.create(); |
| |
| private ListenableFuture<Void> blockedOnMemory; |
| |
| private boolean closed = false; |
| private boolean alreadyRegistered = false; |
| |
| private LocalSourceHandle sourceHandle; |
| private LocalSinkChannel sinkChannel; |
| |
| private long maxBytesCanReserve = |
| IoTDBDescriptor.getInstance().getConfig().getMaxBytesPerFragmentInstance(); |
| |
| // used for SharedTsBlockQueue listener |
| private final ExecutorService executorService; |
| |
| public SharedTsBlockQueue( |
| TFragmentInstanceId fragmentInstanceId, |
| String planNodeId, |
| LocalMemoryManager localMemoryManager, |
| ExecutorService executorService) { |
| this.localFragmentInstanceId = |
| Validate.notNull(fragmentInstanceId, "fragment instance ID cannot be null"); |
| this.fullFragmentInstanceId = |
| FragmentInstanceId.createFragmentInstanceIdFromTFragmentInstanceId(localFragmentInstanceId); |
| this.localPlanNodeId = Validate.notNull(planNodeId, "PlanNode ID cannot be null"); |
| this.localMemoryManager = |
| Validate.notNull(localMemoryManager, "local memory manager cannot be null"); |
| this.executorService = Validate.notNull(executorService, "ExecutorService can not be null."); |
| } |
| |
| public boolean hasNoMoreTsBlocks() { |
| return noMoreTsBlocks; |
| } |
| |
| public long getBufferRetainedSizeInBytes() { |
| return bufferRetainedSizeInBytes; |
| } |
| |
| public SettableFuture<Void> getCanAddTsBlock() { |
| return canAddTsBlock; |
| } |
| |
| public void setMaxBytesCanReserve(long maxBytesCanReserve) { |
| this.maxBytesCanReserve = maxBytesCanReserve; |
| } |
| |
| public long getMaxBytesCanReserve() { |
| return maxBytesCanReserve; |
| } |
| |
| /** Allow adding data to queue manually. */ |
| public void allowAddingTsBlock() { |
| if (!canAddTsBlock.isDone()) { |
| canAddTsBlock.set(null); |
| } |
| } |
| |
| public ListenableFuture<Void> isBlocked() { |
| if (!canAddTsBlock.isDone()) { |
| canAddTsBlock.set(null); |
| } |
| return blocked; |
| } |
| |
| public boolean isEmpty() { |
| return queue.isEmpty(); |
| } |
| |
| public boolean isClosed() { |
| return closed; |
| } |
| |
| public int getNumOfBufferedTsBlocks() { |
| return queue.size(); |
| } |
| |
| public void setSinkChannel(LocalSinkChannel sinkChannel) { |
| this.sinkChannel = sinkChannel; |
| } |
| |
| public void setSourceHandle(LocalSourceHandle sourceHandle) { |
| this.sourceHandle = sourceHandle; |
| } |
| |
| /** Notify no more TsBlocks will be added to the queue. */ |
| public void setNoMoreTsBlocks(boolean noMoreTsBlocks) { |
| LOGGER.debug("[SignalNoMoreTsBlockOnQueue]"); |
| if (closed) { |
| LOGGER.debug("The queue has been destroyed when calling setNoMoreTsBlocks."); |
| return; |
| } |
| this.noMoreTsBlocks = noMoreTsBlocks; |
| if (!blocked.isDone()) { |
| blocked.set(null); |
| } |
| if (this.sourceHandle != null) { |
| this.sourceHandle.checkAndInvokeOnFinished(); |
| } |
| } |
| |
| /** |
| * Remove a TsBlock from the head of the queue and return. Should be invoked only when the future |
| * returned by {@link #isBlocked()} completes. |
| * |
| * @throws IllegalStateException Cannot remove TsBlock from closed queue. |
| */ |
| public TsBlock remove() { |
| if (closed) { |
| throw new IllegalStateException("queue has been destroyed"); |
| } |
| TsBlock tsBlock = queue.remove(); |
| localMemoryManager |
| .getQueryPool() |
| .free( |
| localFragmentInstanceId.getQueryId(), |
| fullFragmentInstanceId, |
| localPlanNodeId, |
| tsBlock.getRetainedSizeInBytes()); |
| bufferRetainedSizeInBytes -= tsBlock.getRetainedSizeInBytes(); |
| // Every time LocalSourceHandle consumes a TsBlock, it needs to send the event to |
| // corresponding LocalSinkChannel. |
| if (sinkChannel != null) { |
| sinkChannel.checkAndInvokeOnFinished(); |
| } |
| if (blocked.isDone() && queue.isEmpty() && !noMoreTsBlocks) { |
| blocked = SettableFuture.create(); |
| } |
| return tsBlock; |
| } |
| |
| /** |
| * Add TsBlocks to the queue. Except the first invocation, this method should be invoked only when |
| * the returned future of last invocation completes. |
| */ |
| public ListenableFuture<Void> add(TsBlock tsBlock) { |
| if (closed) { |
| // queue may have been closed |
| return immediateVoidFuture(); |
| } |
| |
| Validate.notNull(tsBlock, "TsBlock cannot be null"); |
| Validate.isTrue( |
| blockedOnMemory == null || blockedOnMemory.isDone(), "SharedTsBlockQueue is full"); |
| if (!alreadyRegistered) { |
| localMemoryManager |
| .getQueryPool() |
| .registerPlanNodeIdToQueryMemoryMap( |
| localFragmentInstanceId.queryId, fullFragmentInstanceId, localPlanNodeId); |
| alreadyRegistered = true; |
| } |
| Pair<ListenableFuture<Void>, Boolean> pair = |
| localMemoryManager |
| .getQueryPool() |
| .reserve( |
| localFragmentInstanceId.getQueryId(), |
| fullFragmentInstanceId, |
| localPlanNodeId, |
| tsBlock.getRetainedSizeInBytes(), |
| maxBytesCanReserve); |
| blockedOnMemory = pair.left; |
| bufferRetainedSizeInBytes += tsBlock.getRetainedSizeInBytes(); |
| |
| // reserve memory failed, we should wait until there is enough memory |
| if (!Boolean.TRUE.equals(pair.right)) { |
| SettableFuture<Void> channelBlocked = SettableFuture.create(); |
| blockedOnMemory.addListener( |
| () -> { |
| synchronized (this) { |
| queue.add(tsBlock); |
| if (!blocked.isDone()) { |
| blocked.set(null); |
| } |
| channelBlocked.set(null); |
| } |
| }, |
| // Use directExecutor() here could lead to deadlock. Thread A holds lock of |
| // SharedTsBlockQueueA and tries to invoke the listener of |
| // SharedTsBlockQueueB(when freeing memory to complete MemoryReservationFuture) while |
| // Thread B holds lock of SharedTsBlockQueueB and tries to invoke the listener of |
| // SharedTsBlockQueueA |
| executorService); |
| return channelBlocked; |
| } else { // reserve memory succeeded, add the TsBlock directly |
| queue.add(tsBlock); |
| if (!blocked.isDone()) { |
| blocked.set(null); |
| } |
| return blockedOnMemory; |
| } |
| } |
| |
| /** Destroy the queue and complete the future. Should only be called in normal case */ |
| public void close() { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| if (!blocked.isDone()) { |
| blocked.set(null); |
| } |
| if (!canAddTsBlock.isDone()) { |
| canAddTsBlock.set(null); |
| } |
| if (blockedOnMemory != null) { |
| bufferRetainedSizeInBytes -= localMemoryManager.getQueryPool().tryCancel(blockedOnMemory); |
| } |
| queue.clear(); |
| if (bufferRetainedSizeInBytes > 0L) { |
| localMemoryManager |
| .getQueryPool() |
| .free( |
| localFragmentInstanceId.getQueryId(), |
| fullFragmentInstanceId, |
| localPlanNodeId, |
| bufferRetainedSizeInBytes); |
| bufferRetainedSizeInBytes = 0; |
| } |
| if (sinkChannel != null) { |
| // attention: LocalSinkChannel of this SharedTsBlockQueue could be null when we close |
| // LocalSourceHandle(with limit clause it's possible) before constructing the corresponding |
| // LocalSinkChannel. |
| // If this close method is invoked by LocalSourceHandle, listener of LocalSourceHandle will |
| // remove the LocalSourceHandle from the map of MppDataExchangeManager and later when |
| // LocalSinkChannel is initialized, it will construct a new SharedTsBlockQueue. |
| // It is still safe that we let the LocalSourceHandle close successfully in this case. Because |
| // the QueryTerminator will do the final cleaning logic. |
| sinkChannel.close(); |
| } |
| } |
| |
| /** Destroy the queue and cancel the future. Should only be called in abnormal case */ |
| public void abort() { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| if (!blocked.isDone()) { |
| blocked.cancel(true); |
| } |
| if (!canAddTsBlock.isDone()) { |
| canAddTsBlock.set(null); |
| } |
| if (blockedOnMemory != null) { |
| bufferRetainedSizeInBytes -= localMemoryManager.getQueryPool().tryCancel(blockedOnMemory); |
| } |
| queue.clear(); |
| if (bufferRetainedSizeInBytes > 0L) { |
| localMemoryManager |
| .getQueryPool() |
| .free( |
| localFragmentInstanceId.getQueryId(), |
| fullFragmentInstanceId, |
| localPlanNodeId, |
| bufferRetainedSizeInBytes); |
| bufferRetainedSizeInBytes = 0; |
| } |
| } |
| |
| /** Destroy the queue and cancel the future. Should only be called in abnormal case */ |
| public void abort(Throwable t) { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| if (!blocked.isDone()) { |
| blocked.setException(t); |
| } |
| if (!canAddTsBlock.isDone()) { |
| canAddTsBlock.set(null); |
| } |
| if (blockedOnMemory != null) { |
| bufferRetainedSizeInBytes -= localMemoryManager.getQueryPool().tryCancel(blockedOnMemory); |
| } |
| queue.clear(); |
| if (bufferRetainedSizeInBytes > 0L) { |
| localMemoryManager |
| .getQueryPool() |
| .free( |
| localFragmentInstanceId.getQueryId(), |
| fullFragmentInstanceId, |
| localPlanNodeId, |
| bufferRetainedSizeInBytes); |
| bufferRetainedSizeInBytes = 0; |
| } |
| } |
| } |