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HDFS-4757. Update FSDirectory#inodeMap when replacing an INodeDirectory while setting quota. Contributed by Jing Zhao 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1476005 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze 2013-04-26 00:50:09 +00:00
parent e9c83b20f6
commit 06fb184d4d
3 changed files with 44 additions and 2 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -259,6 +259,9 @@ Trunk (Unreleased)
failure to unpack old image tarball that contains hard links.
(Chris Nauroth via szetszwo)
HDFS-4757. Update FSDirectory#inodeMap when replacing an INodeDirectory
while setting quota. (Jing Zhao via szetszwo)
BREAKDOWN OF HADOOP-8562 SUBTASKS AND RELATED JIRAS
HDFS-4145. Merge hdfs cmd line scripts from branch-1-win. (David Lao,

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
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@ -1794,7 +1794,6 @@ public class FSDirectory implements Closeable {
dir.clearChildren();
}
/** Update the count of each directory with quota in the namespace
* A directory's count is defined as the total number inodes in the tree
* rooted at the directory.
@ -1923,6 +1922,8 @@ public class FSDirectory implements Closeable {
INodeDirectory parent = (INodeDirectory)inodes[inodes.length-2];
dirNode = newNode;
parent.replaceChild(newNode);
// update the inodeMap
inodeMap.put(newNode);
}
} else {
// a non-quota directory; so replace it with a directory with quota
@ -1932,6 +1933,8 @@ public class FSDirectory implements Closeable {
INodeDirectory parent = (INodeDirectory)inodes[inodes.length-2];
dirNode = newNode;
parent.replaceChild(newNode);
// update the inodeMap
inodeMap.put(newNode);
}
return (oldNsQuota != nsQuota || oldDsQuota != dsQuota) ? dirNode : null;
}

38
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java
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@ -19,8 +19,9 @@
package org.apache.hadoop.hdfs.server.namenode;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.FileNotFoundException;
@ -890,4 +891,39 @@ public class TestINodeFile {
resolvedPath = FSDirectory.resolvePath(testPath, components, fsd);
assertEquals(testPath, resolvedPath);
}
/**
* Test whether the inode in inodeMap has been replaced after regular inode
* replacement
*/
@Test
public void testInodeReplacement() throws Exception {
final Configuration conf = new Configuration();
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).
numDataNodes(1).build();
cluster.waitActive();
final DistributedFileSystem hdfs = cluster.getFileSystem();
final FSDirectory fsdir = cluster.getNamesystem().getFSDirectory();
final Path dir = new Path("/dir");
hdfs.mkdirs(dir);
INode dirNode = fsdir.getINode(dir.toString());
INode dirNodeFromNode = fsdir.getInode(dirNode.getId());
assertSame(dirNode, dirNodeFromNode);
// set quota to dir, which leads to node replacement
hdfs.setQuota(dir, Long.MAX_VALUE - 1, Long.MAX_VALUE - 1);
dirNode = fsdir.getINode(dir.toString());
assertTrue(dirNode instanceof INodeDirectoryWithQuota);
// the inode in inodeMap should also be replaced
dirNodeFromNode = fsdir.getInode(dirNode.getId());
assertSame(dirNode, dirNodeFromNode);
hdfs.setQuota(dir, -1, -1);
dirNode = fsdir.getINode(dir.toString());
assertTrue(dirNode instanceof INodeDirectory);
// the inode in inodeMap should also be replaced
dirNodeFromNode = fsdir.getInode(dirNode.getId());
assertSame(dirNode, dirNodeFromNode);
}
}