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HDFS-4801. lsSnapshottableDir throws IllegalArgumentException when root is snapshottable. Contributed by Jing Zhao 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2802@1479709 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze 2013-05-06 22:48:54 +00:00
parent 0aab1ef996
commit 98b416f5ac
3 changed files with 27 additions and 4 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt
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@ -341,3 +341,6 @@ Branch-2802 Snapshot (Unreleased)
HDFS-4800. Fix INodeDirectoryWithSnapshot#cleanDeletedINode. (Jing Zhao via
szetszwo)
HDFS-4801. lsSnapshottableDir throws IllegalArgumentException when root is
snapshottable. (Jing Zhao via szetszwo)

15
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/SnapshottableDirectoryStatus.java
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@ -98,10 +98,17 @@ public class SnapshottableDirectoryStatus {
* @return Full path of the file
*/
public Path getFullPath() {
String parentFullPathStr = (parentFullPath == null || parentFullPath.length == 0) ? null
: DFSUtil.bytes2String(parentFullPath);
return parentFullPathStr == null ? new Path(dirStatus.getLocalName())
: new Path(parentFullPathStr, dirStatus.getLocalName());
String parentFullPathStr =
(parentFullPath == null || parentFullPath.length == 0) ?
null : DFSUtil.bytes2String(parentFullPath);
if (parentFullPathStr == null
&& dirStatus.getLocalNameInBytes().length == 0) {
// root
return new Path("/");
} else {
return parentFullPathStr == null ? new Path(dirStatus.getLocalName())
: new Path(parentFullPathStr, dirStatus.getLocalName());
}
}
/**

13
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshottableDirListing.java
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@ -81,6 +81,19 @@ public class TestSnapshottableDirListing {
SnapshottableDirectoryStatus[] dirs = hdfs.getSnapshottableDirListing();
assertNull(dirs);
// Make root as snapshottable
final Path root = new Path("/");
hdfs.allowSnapshot(root);
dirs = hdfs.getSnapshottableDirListing();
assertEquals(1, dirs.length);
assertEquals("", dirs[0].getDirStatus().getLocalName());
assertEquals(root, dirs[0].getFullPath());
// Make root non-snaphsottable
hdfs.disallowSnapshot(root);
dirs = hdfs.getSnapshottableDirListing();
assertNull(dirs);
// Make dir1 as snapshottable
hdfs.allowSnapshot(dir1);
dirs = hdfs.getSnapshottableDirListing();