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Merge pull request #1390 from hilimd/master

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Add AbstractFileSystem and fix hiveserver2 startup NullPointerException
This commit is contained in:
Chris Lu 2020-07-16 08:58:03 -07:00 committed by GitHub
parent 64d7d5fe89 74456b3d5e
commit 28a25ea9b0
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 55 additions and 14 deletions
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35
other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedAbstractFileSystem.java Normal file
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@ -0,0 +1,35 @@
/**
* 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 seaweed.hdfs;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.DelegateToFileSystem;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
public class SeaweedAbstractFileSystem extends DelegateToFileSystem {
SeaweedAbstractFileSystem(final URI uri, final Configuration conf)
throws IOException, URISyntaxException {
super(uri, new SeaweedFileSystem(), conf, "seaweedfs", false);
}
}

26
other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedFileSystem.java
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@ -10,6 +10,7 @@ import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.Progressable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import seaweedfs.client.FilerProto;
import java.io.FileNotFoundException;
import java.io.IOException;
@ -144,7 +145,7 @@ public class SeaweedFileSystem extends FileSystem {
}
@Override
public boolean rename(Path src, Path dst) {
public boolean rename(Path src, Path dst) throws IOException {
LOG.debug("rename path: {} => {}", src, dst);
@ -155,12 +156,13 @@ public class SeaweedFileSystem extends FileSystem {
if (src.equals(dst)) {
return true;
}
FileStatus dstFileStatus = getFileStatus(dst);
FilerProto.Entry entry = seaweedFileSystemStore.lookupEntry(dst);
String sourceFileName = src.getName();
Path adjustedDst = dst;
if (dstFileStatus != null) {
if (entry != null) {
FileStatus dstFileStatus = getFileStatus(dst);
String sourceFileName = src.getName();
if (!dstFileStatus.isDirectory()) {
return false;
}
@ -175,18 +177,20 @@ public class SeaweedFileSystem extends FileSystem {
}
@Override
public boolean delete(Path path, boolean recursive) {
public boolean delete(Path path, boolean recursive) throws IOException {
LOG.debug("delete path: {} recursive:{}", path, recursive);
path = qualify(path);
FileStatus fileStatus = getFileStatus(path);
FilerProto.Entry entry = seaweedFileSystemStore.lookupEntry(path);
if (fileStatus == null) {
if (entry == null) {
return true;
}
FileStatus fileStatus = getFileStatus(path);
return seaweedFileSystemStore.deleteEntries(path, fileStatus.isDirectory(), recursive);
}
@ -222,9 +226,9 @@ public class SeaweedFileSystem extends FileSystem {
path = qualify(path);
FileStatus fileStatus = getFileStatus(path);
FilerProto.Entry entry = seaweedFileSystemStore.lookupEntry(path);
if (fileStatus == null) {
if (entry == null) {
UserGroupInformation currentUser = UserGroupInformation.getCurrentUser();
return seaweedFileSystemStore.createDirectory(path, currentUser,
@ -233,6 +237,8 @@ public class SeaweedFileSystem extends FileSystem {
}
FileStatus fileStatus = getFileStatus(path);
if (fileStatus.isDirectory()) {
return true;
} else {
@ -241,7 +247,7 @@ public class SeaweedFileSystem extends FileSystem {
}
@Override
public FileStatus getFileStatus(Path path) {
public FileStatus getFileStatus(Path path) throws IOException {
LOG.debug("getFileStatus path: {}", path);

8
other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
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@ -61,7 +61,7 @@ public class SeaweedFileSystemStore {
);
}
public FileStatus[] listEntries(final Path path) {
public FileStatus[] listEntries(final Path path) throws IOException {
LOG.debug("listEntries path: {}", path);
FileStatus pathStatus = getFileStatus(path);
@ -89,11 +89,11 @@ public class SeaweedFileSystemStore {
}
public FileStatus getFileStatus(final Path path) {
public FileStatus getFileStatus(final Path path) throws IOException {
FilerProto.Entry entry = lookupEntry(path);
if (entry == null) {
return null;
throw new FileNotFoundException("File does not exist: " + path);
}
LOG.debug("doGetFileStatus path:{} entry:{}", path, entry);
@ -136,7 +136,7 @@ public class SeaweedFileSystemStore {
modification_time, access_time, permission, owner, group, null, path);
}
private FilerProto.Entry lookupEntry(Path path) {
public FilerProto.Entry lookupEntry(Path path) {
return filerClient.lookupEntry(getParentDirectory(path), path.getName());