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https://issues.apache.org/jira/browse/DRILL-4134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15034246#comment-15034246
]
ASF GitHub Bot commented on DRILL-4134:
---------------------------------------
Github user julienledem commented on a diff in the pull request:
https://github.com/apache/drill/pull/283#discussion_r46315590
--- Diff:
exec/memory/base/src/main/java/org/apache/drill/exec/memory/BaseAllocator.java
---
@@ -0,0 +1,689 @@
+/**
+ * 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.drill.exec.memory;
+
+import io.netty.buffer.ByteBufAllocator;
+import io.netty.buffer.DrillBuf;
+import io.netty.buffer.UnsafeDirectLittleEndian;
+
+import java.util.Arrays;
+import java.util.IdentityHashMap;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
+
+import org.apache.drill.common.HistoricalLog;
+import org.apache.drill.exec.exception.OutOfMemoryException;
+import org.apache.drill.exec.memory.AllocatorManager.BufferLedger;
+import org.apache.drill.exec.ops.BufferManager;
+import org.apache.drill.exec.util.AssertionUtil;
+
+import com.google.common.base.Preconditions;
+
+public abstract class BaseAllocator extends Accountant implements
BufferAllocator {
+ private static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(BaseAllocator.class);
+
+ public static final String DEBUG_ALLOCATOR =
"drill.memory.debug.allocator";
+
+ private static final AtomicLong ID_GENERATOR = new AtomicLong(0);
+ private static final int CHUNK_SIZE =
AllocatorManager.INNER_ALLOCATOR.getChunkSize();
+
+ public static final int DEBUG_LOG_LENGTH = 6;
+ public static final boolean DEBUG = AssertionUtil.isAssertionsEnabled()
+ || Boolean.parseBoolean(System.getProperty(DEBUG_ALLOCATOR,
"false"));
+ private final Object DEBUG_LOCK = DEBUG ? new Object() : null;
+
+ private final BaseAllocator parentAllocator;
+ private final ByteBufAllocator thisAsByteBufAllocator;
+ private final IdentityHashMap<BaseAllocator, Object> childAllocators;
+ private final DrillBuf empty;
+
+ private volatile boolean isClosed = false; // the allocator has been
closed
+
+ // Package exposed for sharing between AllocatorManger and BaseAllocator
objects
+ final long id = ID_GENERATOR.incrementAndGet(); // unique ID assigned to
each allocator
+ final String name;
+ final RootAllocator root;
+
+ // members used purely for debugging
+ private final IdentityHashMap<BufferLedger, Object> childLedgers;
+ private final IdentityHashMap<Reservation, Object> reservations;
+ private final HistoricalLog historicalLog;
+
+ protected BaseAllocator(
+ final BaseAllocator parentAllocator,
+ final String name,
+ final long initReservation,
+ final long maxAllocation) throws OutOfMemoryException {
+ super(parentAllocator, initReservation, maxAllocation);
+
+ if (parentAllocator != null) {
+ this.root = parentAllocator.root;
+ empty = parentAllocator.empty;
+ } else if (this instanceof RootAllocator) {
+ this.root = (RootAllocator) this;
+ empty = createEmpty();
+ } else {
+ throw new IllegalStateException("An parent allocator must either
carry a root or be the root.");
--- End diff --
add the parent allocator in the message to help with debugging?
> Incorporate remaining patches from DRILL-1942 Allocator refactor
> ----------------------------------------------------------------
>
> Key: DRILL-4134
> URL: https://issues.apache.org/jira/browse/DRILL-4134
> Project: Apache Drill
> Issue Type: Sub-task
> Components: Execution - Flow
> Reporter: Jacques Nadeau
> Assignee: Jacques Nadeau
> Fix For: 1.4.0
>
>
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