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HDFS-12455. WebHDFS - Adding "snapshot enabled" status to ListStatus query result. Contributed by Ajay Kumar. 

(cherry picked from commit 107c177782)
This commit is contained in:
Xiaoyu Yao 2017-10-03 13:02:12 -07:00
parent 840c83bf7a
commit 2a93ba690c
12 changed files with 103 additions and 13 deletions
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27
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileStatus.java
View File

@ -60,7 +60,8 @@ public class FileStatus implements Writable, Comparable<Object>,
HAS_ACL,
HAS_CRYPT,
HAS_EC,
};
SNAPSHOT_ENABLED
}
private static final Set<AttrFlags> NONE = Collections.<AttrFlags>emptySet();
private static Set<AttrFlags> flags(boolean acl, boolean crypt, boolean ec) {
if (!(acl || crypt || ec)) {
@ -273,6 +274,15 @@ public class FileStatus implements Writable, Comparable<Object>,
return attr.contains(AttrFlags.HAS_EC);
}
/**
* Check if directory is Snapshot enabled or not.
*
* @return true if directory is snapshot enabled
*/
public boolean isSnapshotEnabled() {
return attr.contains(AttrFlags.SNAPSHOT_ENABLED);
}
/**
* Get the owner of the file.
* @return owner of the file. The string could be empty if there is no
@ -330,6 +340,19 @@ public class FileStatus implements Writable, Comparable<Object>,
this.group = (group == null) ? "" : group;
}
/**
* Sets Snapshot enabled flag.
*
* @param isSnapShotEnabled When true, SNAPSHOT_ENABLED flag is set
*/
public void setSnapShotEnabledFlag(boolean isSnapShotEnabled) {
if (isSnapShotEnabled) {
attr.add(AttrFlags.SNAPSHOT_ENABLED);
} else {
attr.remove(AttrFlags.SNAPSHOT_ENABLED);
}
}
/**
* @return The contents of the symbolic link.
*/
@ -486,4 +509,6 @@ public class FileStatus implements Writable, Comparable<Object>,
}
}
}

14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/protocolPB/PBHelper.java
View File

@ -94,11 +94,15 @@ public final class PBHelper {
owner = proto.getOwner();
group = proto.getGroup();
int flags = proto.getFlags();
return new FileStatus(length, isdir, blockReplication, blocksize,
mtime, atime, permission, owner, group, symlink, path,
(flags & FileStatusProto.Flags.HAS_ACL_VALUE) != 0,
FileStatus fileStatus = new FileStatus(length, isdir, blockReplication,
blocksize, mtime, atime, permission, owner, group, symlink, path,
(flags & FileStatusProto.Flags.HAS_ACL_VALUE) != 0,
(flags & FileStatusProto.Flags.HAS_CRYPT_VALUE) != 0,
(flags & FileStatusProto.Flags.HAS_EC_VALUE) != 0);
(flags & FileStatusProto.Flags.HAS_EC_VALUE) != 0);
fileStatus.setSnapShotEnabledFlag((flags & FileStatusProto.Flags
.SNAPSHOT_ENABLED_VALUE) != 0);
return fileStatus;
}
public static FileStatusProto convert(FileStatus stat) throws IOException {
@ -124,6 +128,8 @@ public final class PBHelper {
flags |= stat.hasAcl() ? FileStatusProto.Flags.HAS_ACL_VALUE : 0;
flags |= stat.isEncrypted() ? FileStatusProto.Flags.HAS_CRYPT_VALUE : 0;
flags |= stat.isErasureCoded() ? FileStatusProto.Flags.HAS_EC_VALUE : 0;
flags |= stat.isSnapshotEnabled() ? FileStatusProto.Flags
.SNAPSHOT_ENABLED_VALUE : 0;
bld.setFlags(flags);
return bld.build();
}

7
hadoop-common-project/hadoop-common/src/main/proto/FSProtos.proto
View File

@ -44,9 +44,10 @@ message FileStatusProto {
FT_SYMLINK = 3;
}
enum Flags {
HAS_ACL = 0x01; // has ACLs
HAS_CRYPT = 0x02; // encrypted
HAS_EC = 0x04; // erasure coded
HAS_ACL = 0x01; // has ACLs
HAS_CRYPT = 0x02; // encrypted
HAS_EC = 0x04; // erasure coded
SNAPSHOT_ENABLED = 0x08; // snapshot enabled
}
required FileType fileType = 1;
required string path = 2;

12
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/HdfsFileStatus.java
View File

@ -57,7 +57,8 @@ public class HdfsFileStatus extends FileStatus {
public enum Flags {
HAS_ACL,
HAS_CRYPT,
HAS_EC;
HAS_EC,
SNAPSHOT_ENABLED
}
private final EnumSet<Flags> flags;
@ -247,6 +248,15 @@ public class HdfsFileStatus extends FileStatus {
return storagePolicy;
}
/**
* Check if directory is Snapshot enabled or not.
*
* @return true if directory is snapshot enabled
*/
public boolean isSnapshotEnabled() {
return flags.contains(Flags.SNAPSHOT_ENABLED);
}
@Override
public boolean equals(Object o) {
// satisfy findbugs

5
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelperClient.java
View File

@ -1606,6 +1606,9 @@ public class PBHelperClient {
case HAS_EC:
f.add(HdfsFileStatus.Flags.HAS_EC);
break;
case SNAPSHOT_ENABLED:
f.add(HdfsFileStatus.Flags.SNAPSHOT_ENABLED);
break;
default:
// ignore unknown
break;
@ -2159,6 +2162,8 @@ public class PBHelperClient {
int flags = fs.hasAcl() ? HdfsFileStatusProto.Flags.HAS_ACL_VALUE : 0;
flags |= fs.isEncrypted() ? HdfsFileStatusProto.Flags.HAS_CRYPT_VALUE : 0;
flags |= fs.isErasureCoded() ? HdfsFileStatusProto.Flags.HAS_EC_VALUE : 0;
flags |= fs.isSnapshotEnabled() ? HdfsFileStatusProto.Flags
.SNAPSHOT_ENABLED_VALUE : 0;
builder.setFlags(flags);
return builder.build();
}

1
hadoop-hdfs-project/hadoop-hdfs-client/src/main/proto/hdfs.proto
View File

@ -410,6 +410,7 @@ message HdfsFileStatusProto {
HAS_ACL = 0x01; // has ACLs
HAS_CRYPT = 0x02; // encrypted
HAS_EC = 0x04; // erasure coded
SNAPSHOT_ENABLED = 0x08; // SNAPSHOT ENABLED
}
required FileType fileType = 1;
required bytes path = 2; // local name of inode encoded java UTF8

17
hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/client/HttpFSFileSystem.java
View File

@ -199,6 +199,7 @@ public class HttpFSFileSystem extends FileSystem
public static final String ENC_BIT_JSON = "encBit";
public static final String EC_BIT_JSON = "ecBit";
public static final String SNAPSHOT_BIT_JSON = "seBit";
public static final String DIRECTORY_LISTING_JSON = "DirectoryListing";
public static final String PARTIAL_LISTING_JSON = "partialListing";
@ -1067,19 +1068,27 @@ public class HttpFSFileSystem extends FileSystem
final Boolean aclBit = (Boolean) json.get(ACL_BIT_JSON);
final Boolean encBit = (Boolean) json.get(ENC_BIT_JSON);
final Boolean erasureBit = (Boolean) json.get(EC_BIT_JSON);
final Boolean snapshotEnabledBit = (Boolean) json.get(SNAPSHOT_BIT_JSON);
final boolean aBit = (aclBit != null) ? aclBit : false;
final boolean eBit = (encBit != null) ? encBit : false;
final boolean ecBit = (erasureBit != null) ? erasureBit : false;
if (aBit || eBit || ecBit) {
final boolean seBit =
(snapshotEnabledBit != null) ? snapshotEnabledBit : false;
if (aBit || eBit || ecBit || seBit) {
// include this for compatibility with 2.x
FsPermissionExtension deprecatedPerm =
new FsPermissionExtension(permission, aBit, eBit, ecBit);
return new FileStatus(len, FILE_TYPE.DIRECTORY == type,
FileStatus fileStatus = new FileStatus(len, FILE_TYPE.DIRECTORY == type,
replication, blockSize, mTime, aTime, deprecatedPerm, owner, group,
null, path, aBit, eBit, ecBit);
if (seBit) {
fileStatus.setSnapShotEnabledFlag(seBit);
}
return fileStatus;
} else {
return new FileStatus(len, FILE_TYPE.DIRECTORY == type,
replication, blockSize, mTime, aTime, permission, owner, group, path);
}
return new FileStatus(len, FILE_TYPE.DIRECTORY == type,
replication, blockSize, mTime, aTime, permission, owner, group, path);
}
/**

1
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientNamenodeProtocolServerSideTranslatorPB.java
View File

@ -950,6 +950,7 @@ public class ClientNamenodeProtocolServerSideTranslatorPB implements
}
@Override
public GetFileLinkInfoResponseProto getFileLinkInfo(RpcController controller,
GetFileLinkInfoRequestProto req) throws ServiceException {
try {

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirStatAndListingOp.java
View File

@ -412,6 +412,8 @@ class FSDirStatAndListingOp {
.unprotectedGetErasureCodingPolicy(fsd.getFSNamesystem(), iip);
final boolean isErasureCoded = (ecPolicy != null);
boolean isSnapShottable = false;
if (node.isFile()) {
final INodeFile fileNode = node.asFile();
size = fileNode.computeFileSize(snapshot);
@ -432,6 +434,8 @@ class FSDirStatAndListingOp {
loc = new LocatedBlocks();
}
}
} else if (node.isDirectory()) {
isSnapShottable = node.asDirectory().isSnapshottable();
}
int childrenNum = node.isDirectory() ?
@ -450,6 +454,9 @@ class FSDirStatAndListingOp {
if (isErasureCoded) {
flags.add(HdfsFileStatus.Flags.HAS_EC);
}
if(isSnapShottable){
flags.add(HdfsFileStatus.Flags.SNAPSHOT_ENABLED);
}
return createFileStatus(
size,
node.isDirectory(),

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/JsonUtil.java
View File

@ -138,6 +138,10 @@ public class JsonUtil {
m.put("ecPolicy", status.getErasureCodingPolicy().getName());
}
}
if (status.isSnapshotEnabled()) {
m.put("snapshotEnabled", status.isSnapshotEnabled());
}
m.put("accessTime", status.getAccessTime());
m.put("modificationTime", status.getModificationTime());
m.put("blockSize", status.getBlockSize());

2
hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
View File

@ -441,6 +441,7 @@ See also: [`newlength`](#New_Length), [FileSystem](../../api/org/apache/hadoop/f
"pathSuffix" : "",
"permission" : "777",
"replication" : 0,
"snapshotEnabled" : true
"type" : "DIRECTORY" //enum {FILE, DIRECTORY, SYMLINK}
}
}
@ -486,6 +487,7 @@ See also: [FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getFileSt
"pathSuffix" : "bar",
"permission" : "711",
"replication" : 0,
"snapshotEnabled" : true
"type" : "DIRECTORY"
},
...

19
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDistributedFileSystem.java
View File

@ -1283,6 +1283,25 @@ public class TestDistributedFileSystem {
}
}
@Test
public void testListStatusOfSnapshotDirs() throws IOException {
MiniDFSCluster cluster = new MiniDFSCluster.Builder(new HdfsConfiguration())
.build();
try {
DistributedFileSystem dfs = cluster.getFileSystem();
dfs.create(new Path("/parent/test1/dfsclose/file-0"));
Path snapShotDir = new Path("/parent/test1/");
dfs.allowSnapshot(snapShotDir);
FileStatus status = dfs.getFileStatus(new Path("/parent/test1"));
assertTrue(status.isSnapshotEnabled());
status = dfs.getFileStatus(new Path("/parent/"));
assertFalse(status.isSnapshotEnabled());
} finally {
cluster.shutdown();
}
}
@Test(timeout=10000)
public void testDFSClientPeerReadTimeout() throws IOException {
final int timeout = 1000;