liyafan82 commented on a change in pull request #6323: URL: https://github.com/apache/arrow/pull/6323#discussion_r415203851
########## File path: java/memory/src/test/java/org/apache/arrow/memory/TestNettyAllocationManager.java ########## @@ -0,0 +1,98 @@ +/* + * 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.arrow.memory; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertNull; +import static org.junit.Assert.assertTrue; + +import org.junit.Test; + +import io.netty.buffer.ArrowBuf; + +/** + * Test cases for {@link NettyAllocationManager}. + */ +public class TestNettyAllocationManager { + + private void readWriteArrowBuf(ArrowBuf buffer) { + // write buffer + for (long i = 0; i < buffer.capacity() / 8; i++) { + buffer.setLong(i * 8, i); + } + + // read buffer + for (long i = 0; i < buffer.capacity() / 8; i++) { + long val = buffer.getLong(i * 8); + assertEquals(i, val); + } + } + + /** + * Test the allocation strategy for small buffers.. + */ + @Test + public void testSmallBufferAllocation() { + final long bufSize = 512L; + try (RootAllocator allocator = new RootAllocator(bufSize); + ArrowBuf buffer = allocator.buffer(bufSize)) { + // make sure the buffer is small enough, so we wil use the allocation strategy for small buffers + assertTrue(bufSize < NettyAllocationManager.DEFAULT_ALLOCATION_CUTOFF_VALUE); + + assertTrue(buffer.getReferenceManager() instanceof BufferLedger); + BufferLedger bufferLedger = (BufferLedger) buffer.getReferenceManager(); + + // make sure we are using netty allocation manager + AllocationManager allocMgr = bufferLedger.getAllocationManager(); + assertTrue(allocMgr instanceof NettyAllocationManager); + NettyAllocationManager nettyMgr = (NettyAllocationManager) allocMgr; + + // for the small buffer allocation strategy, the chunk is not null + assertNotNull(nettyMgr.getMemoryChunk()); + + readWriteArrowBuf(buffer); + } + } + + /** + * Test the allocation strategy for large buffers.. + */ + @Test + public void testLargeBufferAllocation() { + final long bufSize = 2048L; + try (RootAllocator allocator = new RootAllocator(bufSize); + ArrowBuf buffer = allocator.buffer(bufSize)) { + // make sure the buffer is large enough, so we wil use the allocation strategy for large buffers Review comment: Sorry about the typo. This comment is removed. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
