HADOOP-10865. Add a Crc32 chunked verification benchmark for both directly and non-directly buffer cases.
This commit is contained in:
Tsz-Wo Nicholas Sze
parent
ba6d5ed955
commit
bbfaf3c271
@ -1175,6 +1175,9 @@ Release 2.8.0 - UNRELEASED
|
||||
HADOOP-12758. Extend CSRF Filter with UserAgent Checks
|
||||
(Larry McCay via cnauroth)
|
||||
|
||||
HADOOP-10865. Add a Crc32 chunked verification benchmark for both directly
|
||||
and non-directly buffer cases. (szetszwo)
|
||||
|
||||
BUG FIXES
|
||||
|
||||
HADOOP-12352. Delay in checkpointing Trash can leave trash for 2 intervals
|
||||
|
||||
@ -286,92 +286,117 @@ public void update( int b ) {
|
||||
* @throws ChecksumException if the checksums do not match
|
||||
*/
|
||||
public void verifyChunkedSums(ByteBuffer data, ByteBuffer checksums,
|
||||
String fileName, long basePos)
|
||||
throws ChecksumException {
|
||||
String fileName, long basePos) throws ChecksumException {
|
||||
if (type.size == 0) return;
|
||||
|
||||
if (data.hasArray() && checksums.hasArray()) {
|
||||
verifyChunkedSums(
|
||||
data.array(), data.arrayOffset() + data.position(), data.remaining(),
|
||||
checksums.array(), checksums.arrayOffset() + checksums.position(),
|
||||
fileName, basePos);
|
||||
final int dataOffset = data.arrayOffset() + data.position();
|
||||
final int crcsOffset = checksums.arrayOffset() + checksums.position();
|
||||
verifyChunked(type, summer, data.array(), dataOffset, data.remaining(),
|
||||
bytesPerChecksum, checksums.array(), crcsOffset, fileName, basePos);
|
||||
return;
|
||||
}
|
||||
if (NativeCrc32.isAvailable()) {
|
||||
NativeCrc32.verifyChunkedSums(bytesPerChecksum, type.id, checksums, data,
|
||||
fileName, basePos);
|
||||
return;
|
||||
} else {
|
||||
verifyChunked(type, summer, data, bytesPerChecksum, checksums, fileName,
|
||||
basePos);
|
||||
}
|
||||
|
||||
int startDataPos = data.position();
|
||||
}
|
||||
|
||||
static void verifyChunked(final Type type, final Checksum algorithm,
|
||||
final ByteBuffer data, final int bytesPerCrc, final ByteBuffer crcs,
|
||||
final String filename, final long basePos) throws ChecksumException {
|
||||
final byte[] bytes = new byte[bytesPerCrc];
|
||||
final int dataOffset = data.position();
|
||||
final int dataLength = data.remaining();
|
||||
data.mark();
|
||||
checksums.mark();
|
||||
crcs.mark();
|
||||
|
||||
try {
|
||||
byte[] buf = new byte[bytesPerChecksum];
|
||||
byte[] sum = new byte[type.size];
|
||||
while (data.remaining() > 0) {
|
||||
int n = Math.min(data.remaining(), bytesPerChecksum);
|
||||
checksums.get(sum);
|
||||
data.get(buf, 0, n);
|
||||
summer.reset();
|
||||
summer.update(buf, 0, n);
|
||||
int calculated = (int)summer.getValue();
|
||||
int stored = (sum[0] << 24 & 0xff000000) |
|
||||
(sum[1] << 16 & 0xff0000) |
|
||||
(sum[2] << 8 & 0xff00) |
|
||||
sum[3] & 0xff;
|
||||
if (calculated != stored) {
|
||||
long errPos = basePos + data.position() - startDataPos - n;
|
||||
throw new ChecksumException(
|
||||
"Checksum error: "+ fileName + " at "+ errPos +
|
||||
" exp: " + stored + " got: " + calculated, errPos);
|
||||
int i = 0;
|
||||
for(final int n = dataLength - bytesPerCrc + 1; i < n; i += bytesPerCrc) {
|
||||
data.get(bytes);
|
||||
algorithm.reset();
|
||||
algorithm.update(bytes, 0, bytesPerCrc);
|
||||
final int computed = (int)algorithm.getValue();
|
||||
final int expected = crcs.getInt();
|
||||
|
||||
if (computed != expected) {
|
||||
long errPos = basePos + data.position() - dataOffset - bytesPerCrc;
|
||||
throwChecksumException(type, algorithm, filename, errPos, expected,
|
||||
computed);
|
||||
}
|
||||
}
|
||||
|
||||
final int remainder = dataLength - i;
|
||||
if (remainder > 0) {
|
||||
data.get(bytes, 0, remainder);
|
||||
algorithm.reset();
|
||||
algorithm.update(bytes, 0, remainder);
|
||||
final int computed = (int)algorithm.getValue();
|
||||
final int expected = crcs.getInt();
|
||||
|
||||
if (computed != expected) {
|
||||
long errPos = basePos + data.position() - dataOffset - remainder;
|
||||
throwChecksumException(type, algorithm, filename, errPos, expected,
|
||||
computed);
|
||||
}
|
||||
}
|
||||
} finally {
|
||||
data.reset();
|
||||
checksums.reset();
|
||||
crcs.reset();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Implementation of chunked verification specifically on byte arrays. This
|
||||
* is to avoid the copy when dealing with ByteBuffers that have array backing.
|
||||
*/
|
||||
private void verifyChunkedSums(
|
||||
byte[] data, int dataOff, int dataLen,
|
||||
byte[] checksums, int checksumsOff, String fileName,
|
||||
long basePos) throws ChecksumException {
|
||||
if (type.size == 0) return;
|
||||
static void verifyChunked(final Type type, final Checksum algorithm,
|
||||
final byte[] data, final int dataOffset, final int dataLength,
|
||||
final int bytesPerCrc, final byte[] crcs, final int crcsOffset,
|
||||
final String filename, final long basePos) throws ChecksumException {
|
||||
final int dataEnd = dataOffset + dataLength;
|
||||
int i = dataOffset;
|
||||
int j = crcsOffset;
|
||||
for(final int n = dataEnd-bytesPerCrc+1; i < n; i += bytesPerCrc, j += 4) {
|
||||
algorithm.reset();
|
||||
algorithm.update(data, i, bytesPerCrc);
|
||||
final int computed = (int)algorithm.getValue();
|
||||
final int expected = ((crcs[j] << 24) + ((crcs[j + 1] << 24) >>> 8))
|
||||
+ (((crcs[j + 2] << 24) >>> 16) + ((crcs[j + 3] << 24) >>> 24));
|
||||
|
||||
if (NativeCrc32.isAvailable()) {
|
||||
NativeCrc32.verifyChunkedSumsByteArray(bytesPerChecksum, type.id,
|
||||
checksums, checksumsOff, data, dataOff, dataLen, fileName, basePos);
|
||||
return;
|
||||
}
|
||||
|
||||
int remaining = dataLen;
|
||||
int dataPos = 0;
|
||||
while (remaining > 0) {
|
||||
int n = Math.min(remaining, bytesPerChecksum);
|
||||
|
||||
summer.reset();
|
||||
summer.update(data, dataOff + dataPos, n);
|
||||
dataPos += n;
|
||||
remaining -= n;
|
||||
|
||||
int calculated = (int)summer.getValue();
|
||||
int stored = (checksums[checksumsOff] << 24 & 0xff000000) |
|
||||
(checksums[checksumsOff + 1] << 16 & 0xff0000) |
|
||||
(checksums[checksumsOff + 2] << 8 & 0xff00) |
|
||||
checksums[checksumsOff + 3] & 0xff;
|
||||
checksumsOff += 4;
|
||||
if (calculated != stored) {
|
||||
long errPos = basePos + dataPos - n;
|
||||
throw new ChecksumException(
|
||||
"Checksum error: "+ fileName + " at "+ errPos +
|
||||
" exp: " + stored + " got: " + calculated, errPos);
|
||||
if (computed != expected) {
|
||||
final long errPos = basePos + i - dataOffset;
|
||||
throwChecksumException(type, algorithm, filename, errPos, expected,
|
||||
computed);
|
||||
}
|
||||
}
|
||||
final int remainder = dataEnd - i;
|
||||
if (remainder > 0) {
|
||||
algorithm.reset();
|
||||
algorithm.update(data, i, remainder);
|
||||
final int computed = (int)algorithm.getValue();
|
||||
final int expected = ((crcs[j] << 24) + ((crcs[j + 1] << 24) >>> 8))
|
||||
+ (((crcs[j + 2] << 24) >>> 16) + ((crcs[j + 3] << 24) >>> 24));
|
||||
|
||||
if (computed != expected) {
|
||||
final long errPos = basePos + i - dataOffset;
|
||||
throwChecksumException(type, algorithm, filename, errPos, expected,
|
||||
computed);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static void throwChecksumException(Type type, Checksum algorithm,
|
||||
String filename, long errPos, int expected, int computed)
|
||||
throws ChecksumException {
|
||||
throw new ChecksumException("Checksum " + type
|
||||
+ " not matched for file " + filename + " at position "+ errPos
|
||||
+ String.format(": expected=%X but computed=%X", expected, computed)
|
||||
+ ", algorithm=" + algorithm.getClass().getSimpleName(), errPos);
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
@ -0,0 +1,350 @@
|
||||
/**
|
||||
* 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.hadoop.util;
|
||||
|
||||
import java.io.PrintStream;
|
||||
import java.lang.reflect.Constructor;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
import java.util.Properties;
|
||||
import java.util.Random;
|
||||
import java.util.zip.CRC32;
|
||||
import java.util.zip.Checksum;
|
||||
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.commons.logging.impl.Log4JLogger;
|
||||
import org.apache.hadoop.fs.ChecksumException;
|
||||
import org.apache.log4j.Level;
|
||||
|
||||
/**
|
||||
* Performance tests to compare performance of Crc32 implementations
|
||||
* This can be run from the command line with:
|
||||
*
|
||||
* java -cp path/to/test/classes:path/to/common/classes \
|
||||
* 'org.apache.hadoop.util.Crc32PerformanceTest'
|
||||
*
|
||||
* or
|
||||
*
|
||||
* hadoop org.apache.hadoop.util.Crc32PerformanceTest
|
||||
*
|
||||
* The output is in JIRA table format.
|
||||
*/
|
||||
public class Crc32PerformanceTest {
|
||||
static final int MB = 1024 * 1024;
|
||||
|
||||
static interface Crc32 {
|
||||
|
||||
public void verifyChunked(ByteBuffer data, int bytesPerCrc, ByteBuffer crcs,
|
||||
String filename, long basePos) throws ChecksumException;
|
||||
|
||||
static final class Native implements Crc32 {
|
||||
@Override
|
||||
public void verifyChunked(ByteBuffer data, int bytesPerSum,
|
||||
ByteBuffer sums, String fileName, long basePos)
|
||||
throws ChecksumException {
|
||||
NativeCrc32.verifyChunkedSums(bytesPerSum, DataChecksum.Type.CRC32.id,
|
||||
sums, data, fileName, basePos);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static abstract class AbstractCrc32<T extends Checksum> implements Crc32 {
|
||||
abstract T newAlgorithm();
|
||||
|
||||
@Override
|
||||
public void verifyChunked(ByteBuffer data, int bytesPerCrc,
|
||||
ByteBuffer crcs, String filename, long basePos)
|
||||
throws ChecksumException {
|
||||
final Checksum algorithm = newAlgorithm();
|
||||
if (data.hasArray() && crcs.hasArray()) {
|
||||
DataChecksum.verifyChunked(DataChecksum.Type.CRC32, algorithm,
|
||||
data.array(), data.position(), data.remaining(), bytesPerCrc,
|
||||
crcs.array(), crcs.position(), filename, basePos);
|
||||
} else {
|
||||
DataChecksum.verifyChunked(DataChecksum.Type.CRC32, algorithm,
|
||||
data, bytesPerCrc, crcs, filename, basePos);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static final class Zip extends AbstractCrc32<CRC32> {
|
||||
@Override
|
||||
public CRC32 newAlgorithm() {
|
||||
return new CRC32();
|
||||
}
|
||||
}
|
||||
|
||||
static final class PureJava extends AbstractCrc32<PureJavaCrc32> {
|
||||
@Override
|
||||
public PureJavaCrc32 newAlgorithm() {
|
||||
return new PureJavaCrc32();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
final int dataLengthMB;
|
||||
final int trials;
|
||||
final boolean direct;
|
||||
|
||||
final PrintStream out = System.out;
|
||||
|
||||
final List<Class<? extends Crc32>> crcs = new ArrayList<>();
|
||||
|
||||
Crc32PerformanceTest(final int dataLengthMB, final int trials,
|
||||
final boolean direct) {
|
||||
this.dataLengthMB = dataLengthMB;
|
||||
this.trials = trials;
|
||||
this.direct = direct;
|
||||
|
||||
crcs.add(Crc32.Zip.class);
|
||||
crcs.add(Crc32.PureJava.class);
|
||||
|
||||
if (direct && NativeCrc32.isAvailable()) {
|
||||
crcs.add(Crc32.Native.class);
|
||||
((Log4JLogger)LogFactory.getLog(NativeCodeLoader.class))
|
||||
.getLogger().setLevel(Level.ALL);
|
||||
}
|
||||
}
|
||||
|
||||
void run() throws Exception {
|
||||
final long startTime = System.nanoTime();
|
||||
printSystemProperties(out);
|
||||
out.println("Data Length = " + dataLengthMB + " MB");
|
||||
out.println("Trials = " + trials);
|
||||
doBench(crcs);
|
||||
out.printf("Elapsed %.1fs\n", secondsElapsed(startTime));
|
||||
}
|
||||
|
||||
public static void main(String args[]) throws Exception {
|
||||
new Crc32PerformanceTest(64, 5, true).run();
|
||||
}
|
||||
|
||||
private static void printCell(String s, int width, PrintStream out) {
|
||||
final int w = s.length() > width? s.length(): width;
|
||||
out.printf(" %" + w + "s |", s);
|
||||
}
|
||||
|
||||
private ByteBuffer allocateByteBuffer(int length) {
|
||||
return direct? ByteBuffer.allocateDirect(length)
|
||||
: ByteBuffer.allocate(length);
|
||||
}
|
||||
|
||||
private ByteBuffer newData() {
|
||||
final byte[] bytes = new byte[dataLengthMB << 20];
|
||||
new Random().nextBytes(bytes);
|
||||
final ByteBuffer dataBufs = allocateByteBuffer(bytes.length);
|
||||
dataBufs.mark();
|
||||
dataBufs.put(bytes);
|
||||
dataBufs.reset();
|
||||
return dataBufs;
|
||||
}
|
||||
|
||||
private ByteBuffer computeCrc(ByteBuffer dataBufs, int bytePerCrc) {
|
||||
final int size = 4 * (dataBufs.remaining() - 1) / bytePerCrc + 1;
|
||||
final ByteBuffer crcBufs = allocateByteBuffer(size);
|
||||
final DataChecksum checksum = DataChecksum.newDataChecksum(
|
||||
DataChecksum.Type.CRC32, bytePerCrc);
|
||||
checksum.calculateChunkedSums(dataBufs, crcBufs);
|
||||
return crcBufs;
|
||||
}
|
||||
|
||||
private void doBench(final List<Class<? extends Crc32>> crcs)
|
||||
throws Exception {
|
||||
final ByteBuffer[] dataBufs = new ByteBuffer[16];
|
||||
for(int i = 0; i < dataBufs.length; i++) {
|
||||
dataBufs[i] = newData();
|
||||
}
|
||||
|
||||
// Print header
|
||||
out.printf("\n%s Buffer Performance Table", direct? "Direct": "Non-direct");
|
||||
out.printf(" (bpc: byte-per-crc in MB/sec; #T: #Theads)\n");
|
||||
|
||||
// Warm up implementations to get jit going.
|
||||
final ByteBuffer[] crc32 = {computeCrc(dataBufs[0], 32)};
|
||||
final ByteBuffer[] crc512 = {computeCrc(dataBufs[0], 512)};
|
||||
for (Class<? extends Crc32> c : crcs) {
|
||||
doBench(c, 1, dataBufs, crc32, 32);
|
||||
doBench(c, 1, dataBufs, crc512, 512);
|
||||
}
|
||||
|
||||
// Test on a variety of sizes with different number of threads
|
||||
for (int i = 5; i <= 16; i++) {
|
||||
doBench(crcs, dataBufs, 1 << i, out);
|
||||
}
|
||||
}
|
||||
|
||||
private void doBench(final List<Class<? extends Crc32>> crcs,
|
||||
final ByteBuffer[] dataBufs, final int bytePerCrc, final PrintStream out)
|
||||
throws Exception {
|
||||
final ByteBuffer[] crcBufs = new ByteBuffer[dataBufs.length];
|
||||
for(int i = 0; i < crcBufs.length; i++) {
|
||||
crcBufs[i] = computeCrc(dataBufs[i], bytePerCrc);
|
||||
}
|
||||
|
||||
final String numBytesStr = " bpc ";
|
||||
final String numThreadsStr = "#T";
|
||||
final String diffStr = "% diff";
|
||||
|
||||
out.print('|');
|
||||
printCell(numBytesStr, 0, out);
|
||||
printCell(numThreadsStr, 0, out);
|
||||
for (int i = 0; i < crcs.size(); i++) {
|
||||
final Class<? extends Crc32> c = crcs.get(i);
|
||||
out.print('|');
|
||||
printCell(c.getSimpleName(), 8, out);
|
||||
for(int j = 0; j < i; j++) {
|
||||
printCell(diffStr, diffStr.length(), out);
|
||||
}
|
||||
}
|
||||
out.printf("\n");
|
||||
|
||||
for(int numThreads = 1; numThreads <= dataBufs.length; numThreads <<= 1) {
|
||||
out.printf("|");
|
||||
printCell(String.valueOf(bytePerCrc), numBytesStr.length(), out);
|
||||
printCell(String.valueOf(numThreads), numThreadsStr.length(), out);
|
||||
|
||||
final List<BenchResult> previous = new ArrayList<BenchResult>();
|
||||
for(Class<? extends Crc32> c : crcs) {
|
||||
System.gc();
|
||||
|
||||
final BenchResult result = doBench(c, numThreads, dataBufs, crcBufs,
|
||||
bytePerCrc);
|
||||
printCell(String.format("%9.1f", result.mbps),
|
||||
c.getSimpleName().length() + 1, out);
|
||||
|
||||
//compare result with previous
|
||||
for(BenchResult p : previous) {
|
||||
final double diff = (result.mbps - p.mbps) / p.mbps * 100;
|
||||
printCell(String.format("%5.1f%%", diff), diffStr.length(), out);
|
||||
}
|
||||
previous.add(result);
|
||||
}
|
||||
out.printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private BenchResult doBench(Class<? extends Crc32> clazz,
|
||||
final int numThreads, final ByteBuffer[] dataBufs,
|
||||
final ByteBuffer[] crcBufs, final int bytePerCrc)
|
||||
throws Exception {
|
||||
|
||||
final Thread[] threads = new Thread[numThreads];
|
||||
final BenchResult[] results = new BenchResult[threads.length];
|
||||
|
||||
{
|
||||
final Constructor<? extends Crc32> ctor = clazz.getConstructor();
|
||||
|
||||
for(int i = 0; i < threads.length; i++) {
|
||||
final Crc32 crc = ctor.newInstance();
|
||||
final long byteProcessed = dataBufs[i].remaining() * trials;
|
||||
final int index = i;
|
||||
threads[i] = new Thread() {
|
||||
@Override
|
||||
public void run() {
|
||||
final long startTime = System.nanoTime();
|
||||
for (int i = 0; i < trials; i++) {
|
||||
dataBufs[index].mark();
|
||||
crcBufs[index].mark();
|
||||
try {
|
||||
crc.verifyChunked(dataBufs[index], bytePerCrc, crcBufs[index],
|
||||
crc.getClass().getSimpleName(), dataBufs[index].position());
|
||||
} catch (Throwable t) {
|
||||
results[index] = new BenchResult(t);
|
||||
return;
|
||||
} finally {
|
||||
dataBufs[index].reset();
|
||||
crcBufs[index].reset();
|
||||
}
|
||||
}
|
||||
final double secsElapsed = secondsElapsed(startTime);
|
||||
results[index] = new BenchResult(byteProcessed/secsElapsed/MB);
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
for(Thread t : threads) {
|
||||
t.start();
|
||||
}
|
||||
for(Thread t : threads) {
|
||||
t.join();
|
||||
}
|
||||
|
||||
double sum = 0;
|
||||
for(int i = 0; i < results.length; i++) {
|
||||
sum += results[i].getMbps();
|
||||
}
|
||||
return new BenchResult(sum/results.length);
|
||||
}
|
||||
|
||||
private static class BenchResult {
|
||||
/** Speed (MB per second) */
|
||||
final double mbps;
|
||||
final Throwable thrown;
|
||||
|
||||
BenchResult(double mbps) {
|
||||
this.mbps = mbps;
|
||||
this.thrown = null;
|
||||
}
|
||||
|
||||
BenchResult(Throwable e) {
|
||||
this.mbps = 0;
|
||||
this.thrown = e;
|
||||
}
|
||||
|
||||
double getMbps() {
|
||||
if (thrown != null) {
|
||||
throw new AssertionError(thrown);
|
||||
}
|
||||
return mbps;
|
||||
}
|
||||
}
|
||||
|
||||
static double secondsElapsed(final long startTime) {
|
||||
return (System.nanoTime() - startTime) / 1000000000.0d;
|
||||
}
|
||||
|
||||
static void printSystemProperties(PrintStream out) {
|
||||
final String[] names = {
|
||||
"java.version",
|
||||
"java.runtime.name",
|
||||
"java.runtime.version",
|
||||
"java.vm.version",
|
||||
"java.vm.vendor",
|
||||
"java.vm.name",
|
||||
"java.vm.specification.version",
|
||||
"java.specification.version",
|
||||
"os.arch",
|
||||
"os.name",
|
||||
"os.version"
|
||||
};
|
||||
int max = 0;
|
||||
for(String n : names) {
|
||||
if (n.length() > max) {
|
||||
max = n.length();
|
||||
}
|
||||
}
|
||||
|
||||
final Properties p = System.getProperties();
|
||||
for(String n : names) {
|
||||
out.printf("%" + max + "s = %s\n", n, p.getProperty(n));
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -197,4 +197,10 @@ private static ByteBuffer directify(ByteBuffer dataBuf) {
|
||||
newBuf.limit(dataBuf.limit());
|
||||
return newBuf;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testCrc32() throws Exception {
|
||||
new Crc32PerformanceTest(8, 3, true).run();
|
||||
new Crc32PerformanceTest(8, 3, false).run();
|
||||
}
|
||||
}
|
||||
|
||||
@ -52,6 +52,7 @@
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.crypto.CryptoProtocolVersion;
|
||||
import org.apache.hadoop.fs.ChecksumException;
|
||||
import org.apache.hadoop.fs.CommonConfigurationKeys;
|
||||
import org.apache.hadoop.fs.CreateFlag;
|
||||
import org.apache.hadoop.fs.FSDataInputStream;
|
||||
@ -62,8 +63,8 @@
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.fs.permission.FsPermission;
|
||||
import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
|
||||
import org.apache.hadoop.hdfs.client.impl.LeaseRenewer;
|
||||
import org.apache.hadoop.hdfs.client.HdfsUtils;
|
||||
import org.apache.hadoop.hdfs.client.impl.LeaseRenewer;
|
||||
import org.apache.hadoop.hdfs.protocol.Block;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeID;
|
||||
@ -929,11 +930,12 @@ public void testRetryOnChecksumFailure() throws Exception {
|
||||
try {
|
||||
dis.read(arr, 0, (int)FILE_LENGTH);
|
||||
fail("Expected ChecksumException not thrown");
|
||||
} catch (Exception ex) {
|
||||
} catch (ChecksumException ex) {
|
||||
GenericTestUtils.assertExceptionContains(
|
||||
"Checksum error", ex);
|
||||
"Checksum", ex);
|
||||
}
|
||||
}
|
||||
client.close();
|
||||
} finally {
|
||||
cluster.shutdown();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user