HDFS-15211. EC: File write hangs during close in case of Exception during updatePipeline. Contributed by Ayush Saxena.
*Added missed test file.
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FSDataOutputStream;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.io.IOUtils;
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import org.junit.Test;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_SIZE_KEY;
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public class TestDFSStripedOutputStreamUpdatePipeline {
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@Test
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public void testDFSStripedOutputStreamUpdatePipeline() throws Exception {
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Configuration conf = new HdfsConfiguration();
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conf.setLong(DFS_BLOCK_SIZE_KEY, 1 * 1024 * 1024);
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try (MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
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.numDataNodes(5).build()) {
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cluster.waitActive();
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final DistributedFileSystem dfs = cluster.getFileSystem();
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// Create a file with EC policy
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Path dir = new Path("/test");
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dfs.mkdirs(dir);
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dfs.enableErasureCodingPolicy("RS-3-2-1024k");
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dfs.setErasureCodingPolicy(dir, "RS-3-2-1024k");
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Path filePath = new Path("/test/file");
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FSDataOutputStream out = dfs.create(filePath);
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try {
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for (int i = 0; i < Long.MAX_VALUE; i++) {
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out.write(i);
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if (i == 1024 * 1024 * 5) {
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cluster.stopDataNode(0);
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cluster.stopDataNode(1);
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cluster.stopDataNode(2);
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}
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}
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} catch(Exception e) {
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dfs.delete(filePath, true);
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} finally {
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// The close should be success, shouldn't get stuck.
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IOUtils.closeStream(out);
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}
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}
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}
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}
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