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HDFS-7178. Additional unit test for replica write with full disk. (Arpit Agarwal)

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arp 2014-10-02 09:28:26 -07:00
parent 6483342a61
commit d8e6481395
2 changed files with 46 additions and 4 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -542,6 +542,9 @@ Release 2.6.0 - UNRELEASED
HDFS-7176. The namenode usage message doesn't include "-rollingupgrade
started" (cmccabe)
HDFS-7178. Additional unit test for replica write with full disk.
(Arpit Agarwal)
BREAKDOWN OF HDFS-6134 AND HADOOP-10150 SUBTASKS AND RELATED JIRAS
HDFS-6387. HDFS CLI admin tool for creating & deleting an

47
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestRbwSpaceReservation.java
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@ -18,7 +18,6 @@
package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@ -28,19 +27,20 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.*;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import org.apache.hadoop.fs.DU;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.*;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.util.Daemon;
import org.apache.log4j.Level;
import org.junit.After;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
@ -80,6 +80,7 @@ public class TestRbwSpaceReservation {
static {
((Log4JLogger) FsDatasetImpl.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger) DataNode.LOG).getLogger().setLevel(Level.ALL);
}
private void startCluster(int blockSize, long perVolumeCapacity) throws IOException {
@ -188,6 +189,44 @@ public class TestRbwSpaceReservation {
createFileAndTestSpaceReservation(GenericTestUtils.getMethodName(), BLOCK_SIZE * 2);
}
@Rule
public ExpectedException thrown = ExpectedException.none();
@Test (timeout=300000)
public void testWithLimitedSpace() throws IOException {
// Cluster with just enough space for a full block + meta.
startCluster(BLOCK_SIZE, 2 * BLOCK_SIZE - 1);
final String methodName = GenericTestUtils.getMethodName();
Path file1 = new Path("/" + methodName + ".01.dat");
Path file2 = new Path("/" + methodName + ".02.dat");
// Create two files.
FSDataOutputStream os1 = null, os2 = null;
try {
os1 = fs.create(file1);
os2 = fs.create(file2);
// Write one byte to the first file.
LOG.info("arpit: writing first file");
byte[] data = new byte[1];
os1.write(data);
os1.hsync();
// Try to write one byte to the second file.
// The block allocation must fail.
thrown.expect(RemoteException.class);
os2.write(data);
os2.hsync();
} finally {
if (os1 != null) {
os1.close();
}
// os2.close() will fail as no block was allocated.
}
}
/**
* Stress test to ensure we are not leaking reserved space.
* @throws IOException