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HDFS-9766. TestDataNodeMetrics#testDataNodeTimeSpend fails intermittently. Contributed by Xiao Chen. 

(cherry picked from commit 81fbc40f084eab85750cc7d4cc967d43d70d8333)
This commit is contained in:
Akira Ajisaka 2016-03-02 14:13:43 +09:00
parent 81b7b9de27
commit e840141726
2 changed files with 31 additions and 20 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -2020,6 +2020,9 @@ Release 2.7.3 - UNRELEASED
HDFS-9880. TestDatanodeRegistration fails occasionally (kihwal)
HDFS-9766. TestDataNodeMetrics#testDataNodeTimeSpend fails intermittently.
(Xiao Chen via aajisaka)
Release 2.7.2 - 2016-01-25
INCOMPATIBLE CHANGES

48
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMetrics.java
View File

@ -26,8 +26,10 @@ import static org.junit.Assert.*;
import java.io.Closeable;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.List;
import com.google.common.base.Supplier;
import com.google.common.collect.Lists;
import org.apache.commons.logging.Log;
@ -47,6 +49,7 @@ import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.util.Time;
import org.junit.Test;
import org.mockito.Mockito;
@ -255,38 +258,43 @@ public class TestDataNodeMetrics {
* and reading causes totalReadTime to move.
* @throws Exception
*/
@Test
@Test(timeout=60000)
public void testDataNodeTimeSpend() throws Exception {
Configuration conf = new HdfsConfiguration();
SimulatedFSDataset.setFactory(conf);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build();
try {
FileSystem fs = cluster.getFileSystem();
final FileSystem fs = cluster.getFileSystem();
List<DataNode> datanodes = cluster.getDataNodes();
assertEquals(datanodes.size(), 1);
DataNode datanode = datanodes.get(0);
final DataNode datanode = datanodes.get(0);
MetricsRecordBuilder rb = getMetrics(datanode.getMetrics().name());
final long LONG_FILE_LEN = 1024 * 1024 * 10;
long startWriteValue = getLongCounter("TotalWriteTime", rb);
long startReadValue = getLongCounter("TotalReadTime", rb);
final long startWriteValue = getLongCounter("TotalWriteTime", rb);
final long startReadValue = getLongCounter("TotalReadTime", rb);
final AtomicInteger x = new AtomicInteger(0);
for (int x =0; x < 50; x++) {
DFSTestUtil.createFile(fs, new Path("/time.txt."+ x),
LONG_FILE_LEN, (short) 1, Time.monotonicNow());
}
for (int x =0; x < 50; x++) {
DFSTestUtil.readFile(fs, new Path("/time.txt." + x));
}
MetricsRecordBuilder rbNew = getMetrics(datanode.getMetrics().name());
long endWriteValue = getLongCounter("TotalWriteTime", rbNew);
long endReadValue = getLongCounter("TotalReadTime", rbNew);
// Lets Metric system update latest metrics
Thread.sleep(100);
assertTrue(endReadValue > startReadValue);
assertTrue(endWriteValue > startWriteValue);
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
x.getAndIncrement();
try {
DFSTestUtil.createFile(fs, new Path("/time.txt." + x.get()),
LONG_FILE_LEN, (short) 1, Time.monotonicNow());
DFSTestUtil.readFile(fs, new Path("/time.txt." + x.get()));
} catch (IOException ioe) {
LOG.error("Caught IOException while ingesting DN metrics", ioe);
return false;
}
MetricsRecordBuilder rbNew = getMetrics(datanode.getMetrics().name());
final long endWriteValue = getLongCounter("TotalWriteTime", rbNew);
final long endReadValue = getLongCounter("TotalReadTime", rbNew);
return endWriteValue > startWriteValue
&& endReadValue > startReadValue;
}
}, 30, 30000);
} finally {
if (cluster != null) {
cluster.shutdown();