content: /*
   * 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.netty;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import org.apache.arrow.memory.ArrowBuf;
  import org.apache.arrow.memory.BufferAllocator;
  import org.apache.arrow.memory.RootAllocator;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Integration test for large (more than 2GB) {@link org.apache.arrow.memory.ArrowBuf}. To run this
   * test, please make sure there is at least 4GB memory in the system.
   */
  public class ITTestLargeArrowBuf {
    private static final Logger logger = LoggerFactory.getLogger(ITTestLargeArrowBuf.class);
  
    private void run(long bufSize) {
      try (BufferAllocator allocator = new RootAllocator(Long.MAX_VALUE);
          ArrowBuf largeBuf = allocator.buffer(bufSize)) {
        assertEquals(bufSize, largeBuf.capacity());
        logger.trace("Successfully allocated a buffer with capacity {}", largeBuf.capacity());
  
        for (long i = 0; i < bufSize / 8; i++) {
          largeBuf.setLong(i * 8, i);
  
          if ((i + 1) % 10000 == 0) {
            logger.trace("Successfully written {} long words", i + 1);
          }
        }
        logger.trace("Successfully written {} long words", bufSize / 8);
  
        for (long i = 0; i < bufSize / 8; i++) {
          long val = largeBuf.getLong(i * 8);
          assertEquals(i, val);
  
          if ((i + 1) % 10000 == 0) {
            logger.trace("Successfully read {} long words", i + 1);
          }
        }
        logger.trace("Successfully read {} long words", bufSize / 8);
      }
      logger.trace("Successfully released the large buffer.");
    }
  
    @Test
    public void testLargeArrowBuf() {
      run(4 * 1024 * 1024 * 1024L);
    }
  
    @Test
    public void testMaxIntArrowBuf() {
      run(Integer.MAX_VALUE);
    }
  }
  