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HDFS-8441. Erasure Coding: make condition check earlier for setReplication. (waltersu4549)

This commit is contained in:
Walter Su 2015-05-22 10:25:53 +08:00 committed by Zhe Zhang
parent 7af05a3db4
commit 3d734df24c
5 changed files with 51 additions and 5 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
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@ -250,3 +250,6 @@
HDFS-8294. Erasure Coding: Fix Findbug warnings present in erasure coding.
(Rakesh R via zhz)
HDFS-8441. Erasure Coding: make condition check earlier for setReplication.
(waltersu4549)

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
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@ -380,7 +380,7 @@ public class FSDirAttrOp {
static BlockInfoContiguous[] unprotectedSetReplication(
FSDirectory fsd, String src, short replication, short[] blockRepls)
throws QuotaExceededException, UnresolvedLinkException,
SnapshotAccessControlException {
SnapshotAccessControlException, UnsupportedActionException {
assert fsd.hasWriteLock();
final INodesInPath iip = fsd.getINodesInPath4Write(src, true);
@ -389,6 +389,11 @@ public class FSDirAttrOp {
return null;
}
INodeFile file = inode.asFile();
if (file.isStriped()) {
throw new UnsupportedActionException(
"Cannot set replication to a file with striped blocks");
}
final short oldBR = file.getPreferredBlockReplication();
// before setFileReplication, check for increasing block replication.

20
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -2404,7 +2404,18 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
if (!DFSUtil.isValidName(src)) {
throw new InvalidPathException(src);
}
blockManager.verifyReplication(src, replication, clientMachine);
checkOperation(OperationCategory.READ);
readLock();
try {
checkOperation(OperationCategory.READ);
if (!isInECZone(src)) {
blockManager.verifyReplication(src, replication, clientMachine);
}
} finally {
readUnlock();
}
checkOperation(OperationCategory.WRITE);
if (blockSize < minBlockSize) {
throw new IOException("Specified block size is less than configured" +
@ -7605,6 +7616,13 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
logAuditEvent(success, "createErasureCodingZone", srcArg, null, resultingStat);
}
private boolean isInECZone(String src) throws IOException {
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
src = FSDirectory.resolvePath(src, pathComponents, dir);
final INodesInPath iip = dir.getINodesInPath(src, true);
return dir.isInECZone(iip);
}
/**
* Get the erasure coding information for specified src
*/

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
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@ -429,8 +429,6 @@ public class INodeFile extends INodeWithAdditionalFields
/** Set the replication factor of this file. */
public final INodeFile setFileReplication(short replication,
int latestSnapshotId) throws QuotaExceededException {
Preconditions.checkState(!isStriped(),
"Cannot set replication to a file with striped blocks");
recordModification(latestSnapshotId);
setFileReplication(replication);
return this;

24
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestErasureCodingZones.java
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@ -18,6 +18,7 @@
package org.apache.hadoop.hdfs;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.protocol.ErasureCodingInfo;
@ -35,6 +36,7 @@ import static org.apache.hadoop.test.GenericTestUtils.assertExceptionContains;
import static org.junit.Assert.*;
public class TestErasureCodingZones {
private Configuration conf;
private MiniDFSCluster cluster;
private DistributedFileSystem fs;
private static final int BLOCK_SIZE = 1024;
@ -42,7 +44,7 @@ public class TestErasureCodingZones {
@Before
public void setupCluster() throws IOException {
Configuration conf = new HdfsConfiguration();
conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
cluster = new MiniDFSCluster.Builder(conf).
numDataNodes(1).build();
@ -149,6 +151,26 @@ public class TestErasureCodingZones {
}
}
@Test
public void testReplication() throws IOException {
final Path testDir = new Path("/ec");
fs.mkdir(testDir, FsPermission.getDirDefault());
fs.createErasureCodingZone(testDir, null, 0);
final Path fooFile = new Path(testDir, "foo");
// create ec file with replication=0
fs.create(fooFile, FsPermission.getFileDefault(), true,
conf.getInt(CommonConfigurationKeys.IO_FILE_BUFFER_SIZE_KEY, 4096),
(short)0, fs.getDefaultBlockSize(fooFile), null);
try {
fs.setReplication(fooFile, (short) 3);
fail("Shouldn't allow to set replication to a file with striped blocks");
} catch (IOException e) {
assertExceptionContains(
"Cannot set replication to a file with striped blocks", e);
}
}
@Test
public void testGetErasureCodingInfoWithSystemDefaultSchema() throws Exception {
String src = "/ec";