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HDFS-6634. inotify in HDFS. Contributed by James Thomas. 

(cherry picked from commit faa4455be5)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/client/IPCLoggerChannel.java
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLog.java
This commit is contained in:
Andrew Wang 2014-09-02 14:02:29 -07:00
parent c50371c8b5
commit 958c9b5080
36 changed files with 2214 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -171,6 +171,8 @@ Release 2.6.0 - UNRELEASED
HDFS-6774. Make FsDataset and DataStore support removing volumes. (Lei Xu
via atm)
HDFS-6634. inotify in HDFS. (James Thomas via wang)
OPTIMIZATIONS
HDFS-6690. Deduplicate xattr names in memory. (wang)

9
hadoop-hdfs-project/hadoop-hdfs/dev-support/findbugsExcludeFile.xml
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@ -106,6 +106,15 @@
<Field name="metrics" />
<Bug pattern="IS2_INCONSISTENT_SYNC" />
</Match>
<!--
We use a separate lock to protect modifications to journalSet so that
FSEditLog#selectInputStreams does not need to be a synchronized method.
-->
<Match>
<Class name="org.apache.hadoop.hdfs.server.namenode.FSEditLog" />
<Field name="journalSet" />
<Bug pattern="IS2_INCONSISTENT_SYNC" />
</Match>
<!--
This method isn't performance-critical and is much clearer to write as it's written.
-->

1
hadoop-hdfs-project/hadoop-hdfs/pom.xml
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@ -453,6 +453,7 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
<include>fsimage.proto</include>
<include>hdfs.proto</include>
<include>encryption.proto</include>
<include>inotify.proto</include>
</includes>
</source>
<output>${project.build.directory}/generated-sources/java</output>

5
hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/main/java/org/apache/hadoop/contrib/bkjournal/BookKeeperEditLogInputStream.java
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@ -168,6 +168,11 @@ class BookKeeperEditLogInputStream extends EditLogInputStream {
reader.setMaxOpSize(maxOpSize);
}
@Override
public boolean isLocalLog() {
return false;
}
/**
* Input stream implementation which can be used by
* FSEditLogOp.Reader

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
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@ -2990,6 +2990,15 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
}
}
public DFSInotifyEventInputStream getInotifyEventStream() throws IOException {
return new DFSInotifyEventInputStream(namenode);
}
public DFSInotifyEventInputStream getInotifyEventStream(long lastReadTxid)
throws IOException {
return new DFSInotifyEventInputStream(namenode, lastReadTxid);
}
@Override // RemotePeerFactory
public Peer newConnectedPeer(InetSocketAddress addr,
Token<BlockTokenIdentifier> blockToken, DatanodeID datanodeId)

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
View File

@ -677,4 +677,10 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final String DFS_DATANODE_SLOW_IO_WARNING_THRESHOLD_KEY =
"dfs.datanode.slow.io.warning.threshold.ms";
public static final long DFS_DATANODE_SLOW_IO_WARNING_THRESHOLD_DEFAULT = 300;
public static final String DFS_NAMENODE_INOTIFY_MAX_EVENTS_PER_RPC_KEY =
"dfs.namenode.inotify.max.events.per.rpc";
public static final int DFS_NAMENODE_INOTIFY_MAX_EVENTS_PER_RPC_DEFAULT =
1000;
}

220
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSInotifyEventInputStream.java Normal file
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@ -0,0 +1,220 @@
/**
* 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 org.apache.hadoop.hdfs;
import com.google.common.collect.Iterators;
import com.google.common.util.concurrent.UncheckedExecutionException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.inotify.EventsList;
import org.apache.hadoop.hdfs.inotify.MissingEventsException;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.util.Time;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.Iterator;
import java.util.Random;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Stream for reading inotify events. DFSInotifyEventInputStreams should not
* be shared among multiple threads.
*/
@InterfaceAudience.Public
@InterfaceStability.Unstable
public class DFSInotifyEventInputStream {
public static Logger LOG = LoggerFactory.getLogger(DFSInotifyEventInputStream
.class);
private final ClientProtocol namenode;
private Iterator<Event> it;
private long lastReadTxid;
/**
* The most recent txid the NameNode told us it has sync'ed -- helps us
* determine how far behind we are in the edit stream.
*/
private long syncTxid;
/**
* Used to generate wait times in {@link DFSInotifyEventInputStream#take()}.
*/
private Random rng = new Random();
private static final int INITIAL_WAIT_MS = 10;
DFSInotifyEventInputStream(ClientProtocol namenode) throws IOException {
this(namenode, namenode.getCurrentEditLogTxid()); // only consider new txn's
}
DFSInotifyEventInputStream(ClientProtocol namenode, long lastReadTxid)
throws IOException {
this.namenode = namenode;
this.it = Iterators.emptyIterator();
this.lastReadTxid = lastReadTxid;
}
/**
* Returns the next event in the stream or null if no new events are currently
* available.
*
* @throws IOException because of network error or edit log
* corruption. Also possible if JournalNodes are unresponsive in the
* QJM setting (even one unresponsive JournalNode is enough in rare cases),
* so catching this exception and retrying at least a few times is
* recommended.
* @throws MissingEventsException if we cannot return the next event in the
* stream because the data for the event (and possibly some subsequent events)
* has been deleted (generally because this stream is a very large number of
* events behind the current state of the NameNode). It is safe to continue
* reading from the stream after this exception is thrown -- the next
* available event will be returned.
*/
public Event poll() throws IOException, MissingEventsException {
// need to keep retrying until the NN sends us the latest committed txid
if (lastReadTxid == -1) {
LOG.debug("poll(): lastReadTxid is -1, reading current txid from NN");
lastReadTxid = namenode.getCurrentEditLogTxid();
return null;
}
if (!it.hasNext()) {
EventsList el = namenode.getEditsFromTxid(lastReadTxid + 1);
if (el.getLastTxid() != -1) {
// we only want to set syncTxid when we were actually able to read some
// edits on the NN -- otherwise it will seem like edits are being
// generated faster than we can read them when the problem is really
// that we are temporarily unable to read edits
syncTxid = el.getSyncTxid();
it = el.getEvents().iterator();
long formerLastReadTxid = lastReadTxid;
lastReadTxid = el.getLastTxid();
if (el.getFirstTxid() != formerLastReadTxid + 1) {
throw new MissingEventsException(formerLastReadTxid + 1,
el.getFirstTxid());
}
} else {
LOG.debug("poll(): read no edits from the NN when requesting edits " +
"after txid {}", lastReadTxid);
return null;
}
}
if (it.hasNext()) { // can be empty if el.getLastTxid != -1 but none of the
// newly seen edit log ops actually got converted to events
return it.next();
} else {
return null;
}
}
/**
* Return a estimate of how many events behind the NameNode's current state
* this stream is. Clients should periodically call this method and check if
* its result is steadily increasing, which indicates that they are falling
* behind (i.e. events are being generated faster than the client is reading
* them). If a client falls too far behind events may be deleted before the
* client can read them.
* <p/>
* A return value of -1 indicates that an estimate could not be produced, and
* should be ignored. The value returned by this method is really only useful
* when compared to previous or subsequent returned values.
*/
public long getEventsBehindEstimate() {
if (syncTxid == 0) {
return -1;
} else {
assert syncTxid >= lastReadTxid;
// this gives the difference between the last txid we have fetched to the
// client and syncTxid at the time we last fetched events from the
// NameNode
return syncTxid - lastReadTxid;
}
}
/**
* Returns the next event in the stream, waiting up to the specified amount of
* time for a new event. Returns null if a new event is not available at the
* end of the specified amount of time. The time before the method returns may
* exceed the specified amount of time by up to the time required for an RPC
* to the NameNode.
*
* @param time number of units of the given TimeUnit to wait
* @param tu the desired TimeUnit
* @throws IOException see {@link DFSInotifyEventInputStream#poll()}
* @throws MissingEventsException
* see {@link DFSInotifyEventInputStream#poll()}
* @throws InterruptedException if the calling thread is interrupted
*/
public Event poll(long time, TimeUnit tu) throws IOException,
InterruptedException, MissingEventsException {
long initialTime = Time.monotonicNow();
long totalWait = TimeUnit.MILLISECONDS.convert(time, tu);
long nextWait = INITIAL_WAIT_MS;
Event next = null;
while ((next = poll()) == null) {
long timeLeft = totalWait - (Time.monotonicNow() - initialTime);
if (timeLeft <= 0) {
LOG.debug("timed poll(): timed out");
break;
} else if (timeLeft < nextWait * 2) {
nextWait = timeLeft;
} else {
nextWait *= 2;
}
LOG.debug("timed poll(): poll() returned null, sleeping for {} ms",
nextWait);
Thread.sleep(nextWait);
}
return next;
}
/**
* Returns the next event in the stream, waiting indefinitely if a new event
* is not immediately available.
*
* @throws IOException see {@link DFSInotifyEventInputStream#poll()}
* @throws MissingEventsException see
* {@link DFSInotifyEventInputStream#poll()}
* @throws InterruptedException if the calling thread is interrupted
*/
public Event take() throws IOException, InterruptedException,
MissingEventsException {
Event next = null;
int nextWaitMin = INITIAL_WAIT_MS;
while ((next = poll()) == null) {
// sleep for a random period between nextWaitMin and nextWaitMin * 2
// to avoid stampedes at the NN if there are multiple clients
int sleepTime = nextWaitMin + rng.nextInt(nextWaitMin);
LOG.debug("take(): poll() returned null, sleeping for {} ms", sleepTime);
Thread.sleep(sleepTime);
// the maximum sleep is 2 minutes
nextWaitMin = Math.min(60000, nextWaitMin * 2);
}
return next;
}
}

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java
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@ -1988,4 +1988,13 @@ public class DistributedFileSystem extends FileSystem {
}
}.resolve(this, absF);
}
public DFSInotifyEventInputStream getInotifyEventStream() throws IOException {
return dfs.getInotifyEventStream();
}
public DFSInotifyEventInputStream getInotifyEventStream(long lastReadTxid)
throws IOException {
return dfs.getInotifyEventStream(lastReadTxid);
}
}

50
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/client/HdfsAdmin.java
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@ -29,6 +29,7 @@ import org.apache.hadoop.fs.CacheFlag;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.RemoteIterator;
import org.apache.hadoop.hdfs.DFSInotifyEventInputStream;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
@ -275,4 +276,53 @@ public class HdfsAdmin {
throws IOException {
return dfs.listEncryptionZones();
}
/**
* Exposes a stream of namesystem events. Only events occurring after the
* stream is created are available.
* See {@link org.apache.hadoop.hdfs.DFSInotifyEventInputStream}
* for information on stream usage.
* See {@link org.apache.hadoop.hdfs.inotify.Event}
* for information on the available events.
* <p/>
* Inotify users may want to tune the following HDFS parameters to
* ensure that enough extra HDFS edits are saved to support inotify clients
* that fall behind the current state of the namespace while reading events.
* The default parameter values should generally be reasonable. If edits are
* deleted before their corresponding events can be read, clients will see a
* {@link org.apache.hadoop.hdfs.inotify.MissingEventsException} on
* {@link org.apache.hadoop.hdfs.DFSInotifyEventInputStream} method calls.
*
* It should generally be sufficient to tune these parameters:
* dfs.namenode.num.extra.edits.retained
* dfs.namenode.max.extra.edits.segments.retained
*
* Parameters that affect the number of created segments and the number of
* edits that are considered necessary, i.e. do not count towards the
* dfs.namenode.num.extra.edits.retained quota):
* dfs.namenode.checkpoint.period
* dfs.namenode.checkpoint.txns
* dfs.namenode.num.checkpoints.retained
* dfs.ha.log-roll.period
* <p/>
* It is recommended that local journaling be configured
* (dfs.namenode.edits.dir) for inotify (in addition to a shared journal)
* so that edit transfers from the shared journal can be avoided.
*
* @throws IOException If there was an error obtaining the stream.
*/
public DFSInotifyEventInputStream getInotifyEventStream() throws IOException {
return dfs.getInotifyEventStream();
}
/**
* A version of {@link HdfsAdmin#getInotifyEventStream()} meant for advanced
* users who are aware of HDFS edits up to lastReadTxid (e.g. because they
* have access to an FSImage inclusive of lastReadTxid) and only want to read
* events after this point.
*/
public DFSInotifyEventInputStream getInotifyEventStream(long lastReadTxid)
throws IOException {
return dfs.getInotifyEventStream(lastReadTxid);
}
}

452
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/inotify/Event.java Normal file
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@ -0,0 +1,452 @@
/**
* 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 org.apache.hadoop.hdfs.inotify;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.XAttr;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.FsPermission;
import java.util.List;
/**
* Events sent by the inotify system. Note that no events are necessarily sent
* when a file is opened for read (although a MetadataUpdateEvent will be sent
* if the atime is updated).
*/
@InterfaceAudience.Public
@InterfaceStability.Unstable
public abstract class Event {
public static enum EventType {
CREATE, CLOSE, APPEND, RENAME, METADATA, UNLINK
}
private EventType eventType;
public EventType getEventType() {
return eventType;
}
public Event(EventType eventType) {
this.eventType = eventType;
}
/**
* Sent when a file is closed after append or create.
*/
public static class CloseEvent extends Event {
private String path;
private long fileSize;
private long timestamp;
public CloseEvent(String path, long fileSize, long timestamp) {
super(EventType.CLOSE);
this.path = path;
this.fileSize = fileSize;
this.timestamp = timestamp;
}
public String getPath() {
return path;
}
/**
* The size of the closed file in bytes. May be -1 if the size is not
* available (e.g. in the case of a close generated by a concat operation).
*/
public long getFileSize() {
return fileSize;
}
/**
* The time when this event occurred, in milliseconds since the epoch.
*/
public long getTimestamp() {
return timestamp;
}
}
/**
* Sent when a new file is created (including overwrite).
*/
public static class CreateEvent extends Event {
public static enum INodeType {
FILE, DIRECTORY, SYMLINK;
}
private INodeType iNodeType;
private String path;
private long ctime;
private int replication;
private String ownerName;
private String groupName;
private FsPermission perms;
private String symlinkTarget;
public static class Builder {
private INodeType iNodeType;
private String path;
private long ctime;
private int replication;
private String ownerName;
private String groupName;
private FsPermission perms;
private String symlinkTarget;
public Builder iNodeType(INodeType type) {
this.iNodeType = type;
return this;
}
public Builder path(String path) {
this.path = path;
return this;
}
public Builder ctime(long ctime) {
this.ctime = ctime;
return this;
}
public Builder replication(int replication) {
this.replication = replication;
return this;
}
public Builder ownerName(String ownerName) {
this.ownerName = ownerName;
return this;
}
public Builder groupName(String groupName) {
this.groupName = groupName;
return this;
}
public Builder perms(FsPermission perms) {
this.perms = perms;
return this;
}
public Builder symlinkTarget(String symlinkTarget) {
this.symlinkTarget = symlinkTarget;
return this;
}
public CreateEvent build() {
return new CreateEvent(this);
}
}
private CreateEvent(Builder b) {
super(EventType.CREATE);
this.iNodeType = b.iNodeType;
this.path = b.path;
this.ctime = b.ctime;
this.replication = b.replication;
this.ownerName = b.ownerName;
this.groupName = b.groupName;
this.perms = b.perms;
this.symlinkTarget = b.symlinkTarget;
}
public INodeType getiNodeType() {
return iNodeType;
}
public String getPath() {
return path;
}
/**
* Creation time of the file, directory, or symlink.
*/
public long getCtime() {
return ctime;
}
/**
* Replication is zero if the CreateEvent iNodeType is directory or symlink.
*/
public int getReplication() {
return replication;
}
public String getOwnerName() {
return ownerName;
}
public String getGroupName() {
return groupName;
}
public FsPermission getPerms() {
return perms;
}
/**
* Symlink target is null if the CreateEvent iNodeType is not symlink.
*/
public String getSymlinkTarget() {
return symlinkTarget;
}
}
/**
* Sent when there is an update to directory or file (none of the metadata
* tracked here applies to symlinks) that is not associated with another
* inotify event. The tracked metadata includes atime/mtime, replication,
* owner/group, permissions, ACLs, and XAttributes. Fields not relevant to the
* metadataType of the MetadataUpdateEvent will be null or will have their default
* values.
*/
public static class MetadataUpdateEvent extends Event {
public static enum MetadataType {
TIMES, REPLICATION, OWNER, PERMS, ACLS, XATTRS;
}
private String path;
private MetadataType metadataType;
private long mtime;
private long atime;
private int replication;
private String ownerName;
private String groupName;
private FsPermission perms;
private List<AclEntry> acls;
private List<XAttr> xAttrs;
private boolean xAttrsRemoved;
public static class Builder {
private String path;
private MetadataType metadataType;
private long mtime;
private long atime;
private int replication;
private String ownerName;
private String groupName;
private FsPermission perms;
private List<AclEntry> acls;
private List<XAttr> xAttrs;
private boolean xAttrsRemoved;
public Builder path(String path) {
this.path = path;
return this;
}
public Builder metadataType(MetadataType type) {
this.metadataType = type;
return this;
}
public Builder mtime(long mtime) {
this.mtime = mtime;
return this;
}
public Builder atime(long atime) {
this.atime = atime;
return this;
}
public Builder replication(int replication) {
this.replication = replication;
return this;
}
public Builder ownerName(String ownerName) {
this.ownerName = ownerName;
return this;
}
public Builder groupName(String groupName) {
this.groupName = groupName;
return this;
}
public Builder perms(FsPermission perms) {
this.perms = perms;
return this;
}
public Builder acls(List<AclEntry> acls) {
this.acls = acls;
return this;
}
public Builder xAttrs(List<XAttr> xAttrs) {
this.xAttrs = xAttrs;
return this;
}
public Builder xAttrsRemoved(boolean xAttrsRemoved) {
this.xAttrsRemoved = xAttrsRemoved;
return this;
}
public MetadataUpdateEvent build() {
return new MetadataUpdateEvent(this);
}
}
private MetadataUpdateEvent(Builder b) {
super(EventType.METADATA);
this.path = b.path;
this.metadataType = b.metadataType;
this.mtime = b.mtime;
this.atime = b.atime;
this.replication = b.replication;
this.ownerName = b.ownerName;
this.groupName = b.groupName;
this.perms = b.perms;
this.acls = b.acls;
this.xAttrs = b.xAttrs;
this.xAttrsRemoved = b.xAttrsRemoved;
}
public String getPath() {
return path;
}
public MetadataType getMetadataType() {
return metadataType;
}
public long getMtime() {
return mtime;
}
public long getAtime() {
return atime;
}
public int getReplication() {
return replication;
}
public String getOwnerName() {
return ownerName;
}
public String getGroupName() {
return groupName;
}
public FsPermission getPerms() {
return perms;
}
/**
* The full set of ACLs currently associated with this file or directory.
* May be null if all ACLs were removed.
*/
public List<AclEntry> getAcls() {
return acls;
}
public List<XAttr> getxAttrs() {
return xAttrs;
}
/**
* Whether the xAttrs returned by getxAttrs() were removed (as opposed to
* added).
*/
public boolean isxAttrsRemoved() {
return xAttrsRemoved;
}
}
/**
* Sent when a file, directory, or symlink is renamed.
*/
public static class RenameEvent extends Event {
private String srcPath;
private String dstPath;
private long timestamp;
public RenameEvent(String srcPath, String dstPath, long timestamp) {
super(EventType.RENAME);
this.srcPath = srcPath;
this.dstPath = dstPath;
this.timestamp = timestamp;
}
public String getSrcPath() {
return srcPath;
}
public String getDstPath() {
return dstPath;
}
/**
* The time when this event occurred, in milliseconds since the epoch.
*/
public long getTimestamp() {
return timestamp;
}
}
/**
* Sent when an existing file is opened for append.
*/
public static class AppendEvent extends Event {
private String path;
public AppendEvent(String path) {
super(EventType.APPEND);
this.path = path;
}
public String getPath() {
return path;
}
}
/**
* Sent when a file, directory, or symlink is deleted.
*/
public static class UnlinkEvent extends Event {
private String path;
private long timestamp;
public UnlinkEvent(String path, long timestamp) {
super(EventType.UNLINK);
this.path = path;
this.timestamp = timestamp;
}
public String getPath() {
return path;
}
/**
* The time when this event occurred, in milliseconds since the epoch.
*/
public long getTimestamp() {
return timestamp;
}
}
}

63
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/inotify/EventsList.java Normal file
View File

@ -0,0 +1,63 @@
/**
* 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 org.apache.hadoop.hdfs.inotify;
import org.apache.hadoop.classification.InterfaceAudience;
import java.util.List;
/**
* Contains a set of events, the transaction ID in the edit log up to which we
* read to produce these events, and the first txid we observed when producing
* these events (the last of which is for the purpose of determining whether we
* have missed events due to edit deletion). Also contains the most recent txid
* that the NameNode has sync'ed, so the client can determine how far behind in
* the edit log it is.
*/
@InterfaceAudience.Private
public class EventsList {
private List<Event> events;
private long firstTxid;
private long lastTxid;
private long syncTxid;
public EventsList(List<Event> events, long firstTxid, long lastTxid,
long syncTxid) {
this.events = events;
this.firstTxid = firstTxid;
this.lastTxid = lastTxid;
this.syncTxid = syncTxid;
}
public List<Event> getEvents() {
return events;
}
public long getFirstTxid() {
return firstTxid;
}
public long getLastTxid() {
return lastTxid;
}
public long getSyncTxid() {
return syncTxid;
}
}

54
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/inotify/MissingEventsException.java Normal file
View File

@ -0,0 +1,54 @@
/**
* 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 org.apache.hadoop.hdfs.inotify;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class MissingEventsException extends Exception {
private static final long serialVersionUID = 1L;
private long expectedTxid;
private long actualTxid;
public MissingEventsException() {}
public MissingEventsException(long expectedTxid, long actualTxid) {
this.expectedTxid = expectedTxid;
this.actualTxid = actualTxid;
}
public long getExpectedTxid() {
return expectedTxid;
}
public long getActualTxid() {
return actualTxid;
}
@Override
public String toString() {
return "We expected the next batch of events to start with transaction ID "
+ expectedTxid + ", but it instead started with transaction ID " +
actualTxid + ". Most likely the intervening transactions were cleaned "
+ "up as part of checkpointing.";
}
}

18
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/ClientProtocol.java
View File

@ -43,10 +43,13 @@ import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.inotify.EventsList;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.RollingUpgradeAction;
import org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSelector;
import org.apache.hadoop.hdfs.server.namenode.FSEditLogOp;
import org.apache.hadoop.hdfs.server.namenode.NotReplicatedYetException;
import org.apache.hadoop.hdfs.server.namenode.SafeModeException;
import org.apache.hadoop.hdfs.server.protocol.DatanodeStorageReport;
@ -1372,4 +1375,19 @@ public interface ClientProtocol {
*/
@Idempotent
public void checkAccess(String path, FsAction mode) throws IOException;
/**
* Get the highest txid the NameNode knows has been written to the edit
* log, or -1 if the NameNode's edit log is not yet open for write. Used as
* the starting point for the inotify event stream.
*/
@Idempotent
public long getCurrentEditLogTxid() throws IOException;
/**
* Get an ordered list of events corresponding to the edit log transactions
* from txid onwards.
*/
@Idempotent
public EventsList getEditsFromTxid(long txid) throws IOException;
}

25
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientNamenodeProtocolServerSideTranslatorPB.java
View File

@ -91,12 +91,16 @@ import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetBlo
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetBlockLocationsResponseProto.Builder;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetContentSummaryRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetContentSummaryResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetCurrentEditLogTxidRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetCurrentEditLogTxidResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDataEncryptionKeyRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDataEncryptionKeyResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDatanodeReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDatanodeReportResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDatanodeStorageReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDatanodeStorageReportResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetEditsFromTxidRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetEditsFromTxidResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFileInfoRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFileInfoResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFileLinkInfoRequestProto;
@ -1408,4 +1412,25 @@ public class ClientNamenodeProtocolServerSideTranslatorPB implements
}
return VOID_CHECKACCESS_RESPONSE;
}
public GetCurrentEditLogTxidResponseProto getCurrentEditLogTxid(RpcController controller,
GetCurrentEditLogTxidRequestProto req) throws ServiceException {
try {
return GetCurrentEditLogTxidResponseProto.newBuilder().setTxid(
server.getCurrentEditLogTxid()).build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public GetEditsFromTxidResponseProto getEditsFromTxid(RpcController controller,
GetEditsFromTxidRequestProto req) throws ServiceException {
try {
return PBHelper.convertEditsResponse(server.getEditsFromTxid(
req.getTxid()));
} catch (IOException e) {
throw new ServiceException(e);
}
}
}

25
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientNamenodeProtocolTranslatorPB.java
View File

@ -43,6 +43,7 @@ import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.inotify.EventsList;
import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
@ -95,10 +96,12 @@ import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetAdd
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetBlockLocationsRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetBlockLocationsResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetContentSummaryRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetCurrentEditLogTxidRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDataEncryptionKeyRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDataEncryptionKeyResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDatanodeReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetDatanodeStorageReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetEditsFromTxidRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFileInfoRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFileInfoResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFileLinkInfoRequestProto;
@ -159,6 +162,7 @@ import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.RemoveXAttrRequestProto
import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.SetXAttrRequestProto;
import org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.server.namenode.FSEditLogOp;
import org.apache.hadoop.hdfs.server.namenode.NotReplicatedYetException;
import org.apache.hadoop.hdfs.server.namenode.SafeModeException;
import org.apache.hadoop.hdfs.server.protocol.DatanodeStorageReport;
@ -1430,4 +1434,25 @@ public class ClientNamenodeProtocolTranslatorPB implements
throw ProtobufHelper.getRemoteException(e);
}
}
public long getCurrentEditLogTxid() throws IOException {
GetCurrentEditLogTxidRequestProto req = GetCurrentEditLogTxidRequestProto
.getDefaultInstance();
try {
return rpcProxy.getCurrentEditLogTxid(null, req).getTxid();
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
}
@Override
public EventsList getEditsFromTxid(long txid) throws IOException {
GetEditsFromTxidRequestProto req = GetEditsFromTxidRequestProto.newBuilder()
.setTxid(txid).build();
try {
return PBHelper.convert(rpcProxy.getEditsFromTxid(null, req));
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
}
}

245
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java
View File

@ -45,6 +45,8 @@ import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.StorageType;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.inotify.EventsList;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
@ -95,6 +97,7 @@ import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CacheP
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CreateFlagProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.DatanodeReportTypeProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.DatanodeStorageReportProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetEditsFromTxidResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.GetFsStatsResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.RollingUpgradeActionProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.RollingUpgradeInfoProto;
@ -157,6 +160,7 @@ import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.StorageReportProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.StorageTypeProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.StorageTypesProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.StorageUuidsProto;
import org.apache.hadoop.hdfs.protocol.proto.InotifyProtos;
import org.apache.hadoop.hdfs.protocol.proto.JournalProtocolProtos.JournalInfoProto;
import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.GetXAttrsResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.ListXAttrsResponseProto;
@ -2334,6 +2338,247 @@ public class PBHelper {
return new ShmId(shmId.getHi(), shmId.getLo());
}
private static Event.CreateEvent.INodeType createTypeConvert(InotifyProtos.INodeType
type) {
switch (type) {
case I_TYPE_DIRECTORY:
return Event.CreateEvent.INodeType.DIRECTORY;
case I_TYPE_FILE:
return Event.CreateEvent.INodeType.FILE;
case I_TYPE_SYMLINK:
return Event.CreateEvent.INodeType.SYMLINK;
default:
return null;
}
}
private static InotifyProtos.MetadataUpdateType metadataUpdateTypeConvert(
Event.MetadataUpdateEvent.MetadataType type) {
switch (type) {
case TIMES:
return InotifyProtos.MetadataUpdateType.META_TYPE_TIMES;
case REPLICATION:
return InotifyProtos.MetadataUpdateType.META_TYPE_REPLICATION;
case OWNER:
return InotifyProtos.MetadataUpdateType.META_TYPE_OWNER;
case PERMS:
return InotifyProtos.MetadataUpdateType.META_TYPE_PERMS;
case ACLS:
return InotifyProtos.MetadataUpdateType.META_TYPE_ACLS;
case XATTRS:
return InotifyProtos.MetadataUpdateType.META_TYPE_XATTRS;
default:
return null;
}
}
private static Event.MetadataUpdateEvent.MetadataType metadataUpdateTypeConvert(
InotifyProtos.MetadataUpdateType type) {
switch (type) {
case META_TYPE_TIMES:
return Event.MetadataUpdateEvent.MetadataType.TIMES;
case META_TYPE_REPLICATION:
return Event.MetadataUpdateEvent.MetadataType.REPLICATION;
case META_TYPE_OWNER:
return Event.MetadataUpdateEvent.MetadataType.OWNER;
case META_TYPE_PERMS:
return Event.MetadataUpdateEvent.MetadataType.PERMS;
case META_TYPE_ACLS:
return Event.MetadataUpdateEvent.MetadataType.ACLS;
case META_TYPE_XATTRS:
return Event.MetadataUpdateEvent.MetadataType.XATTRS;
default:
return null;
}
}
private static InotifyProtos.INodeType createTypeConvert(Event.CreateEvent.INodeType
type) {
switch (type) {
case DIRECTORY:
return InotifyProtos.INodeType.I_TYPE_DIRECTORY;
case FILE:
return InotifyProtos.INodeType.I_TYPE_FILE;
case SYMLINK:
return InotifyProtos.INodeType.I_TYPE_SYMLINK;
default:
return null;
}
}
public static EventsList convert(GetEditsFromTxidResponseProto resp) throws
IOException {
List<Event> events = Lists.newArrayList();
for (InotifyProtos.EventProto p : resp.getEventsList().getEventsList()) {
switch(p.getType()) {
case EVENT_CLOSE:
InotifyProtos.CloseEventProto close =
InotifyProtos.CloseEventProto.parseFrom(p.getContents());
events.add(new Event.CloseEvent(close.getPath(), close.getFileSize(),
close.getTimestamp()));
break;
case EVENT_CREATE:
InotifyProtos.CreateEventProto create =
InotifyProtos.CreateEventProto.parseFrom(p.getContents());
events.add(new Event.CreateEvent.Builder()
.iNodeType(createTypeConvert(create.getType()))
.path(create.getPath())
.ctime(create.getCtime())
.ownerName(create.getOwnerName())
.groupName(create.getGroupName())
.perms(convert(create.getPerms()))
.replication(create.getReplication())
.symlinkTarget(create.getSymlinkTarget().isEmpty() ? null :
create.getSymlinkTarget()).build());
break;
case EVENT_METADATA:
InotifyProtos.MetadataUpdateEventProto meta =
InotifyProtos.MetadataUpdateEventProto.parseFrom(p.getContents());
events.add(new Event.MetadataUpdateEvent.Builder()
.path(meta.getPath())
.metadataType(metadataUpdateTypeConvert(meta.getType()))
.mtime(meta.getMtime())
.atime(meta.getAtime())
.replication(meta.getReplication())
.ownerName(
meta.getOwnerName().isEmpty() ? null : meta.getOwnerName())
.groupName(
meta.getGroupName().isEmpty() ? null : meta.getGroupName())
.perms(meta.hasPerms() ? convert(meta.getPerms()) : null)
.acls(meta.getAclsList().isEmpty() ? null : convertAclEntry(
meta.getAclsList()))
.xAttrs(meta.getXAttrsList().isEmpty() ? null : convertXAttrs(
meta.getXAttrsList()))
.xAttrsRemoved(meta.getXAttrsRemoved())
.build());
break;
case EVENT_RENAME:
InotifyProtos.RenameEventProto rename =
InotifyProtos.RenameEventProto.parseFrom(p.getContents());
events.add(new Event.RenameEvent(rename.getSrcPath(), rename.getDestPath(),
rename.getTimestamp()));
break;
case EVENT_APPEND:
InotifyProtos.AppendEventProto reopen =
InotifyProtos.AppendEventProto.parseFrom(p.getContents());
events.add(new Event.AppendEvent(reopen.getPath()));
break;
case EVENT_UNLINK:
InotifyProtos.UnlinkEventProto unlink =
InotifyProtos.UnlinkEventProto.parseFrom(p.getContents());
events.add(new Event.UnlinkEvent(unlink.getPath(), unlink.getTimestamp()));
break;
default:
throw new RuntimeException("Unexpected inotify event type: " +
p.getType());
}
}
return new EventsList(events, resp.getEventsList().getFirstTxid(),
resp.getEventsList().getLastTxid(), resp.getEventsList().getSyncTxid());
}
public static GetEditsFromTxidResponseProto convertEditsResponse(EventsList el) {
InotifyProtos.EventsListProto.Builder builder =
InotifyProtos.EventsListProto.newBuilder();
for (Event e : el.getEvents()) {
switch(e.getEventType()) {
case CLOSE:
Event.CloseEvent ce = (Event.CloseEvent) e;
builder.addEvents(InotifyProtos.EventProto.newBuilder()
.setType(InotifyProtos.EventType.EVENT_CLOSE)
.setContents(
InotifyProtos.CloseEventProto.newBuilder()
.setPath(ce.getPath())
.setFileSize(ce.getFileSize())
.setTimestamp(ce.getTimestamp()).build().toByteString()
).build());
break;
case CREATE:
Event.CreateEvent ce2 = (Event.CreateEvent) e;
builder.addEvents(InotifyProtos.EventProto.newBuilder()
.setType(InotifyProtos.EventType.EVENT_CREATE)
.setContents(
InotifyProtos.CreateEventProto.newBuilder()
.setType(createTypeConvert(ce2.getiNodeType()))
.setPath(ce2.getPath())
.setCtime(ce2.getCtime())
.setOwnerName(ce2.getOwnerName())
.setGroupName(ce2.getGroupName())
.setPerms(convert(ce2.getPerms()))
.setReplication(ce2.getReplication())
.setSymlinkTarget(ce2.getSymlinkTarget() == null ?
"" : ce2.getSymlinkTarget()).build().toByteString()
).build());
break;
case METADATA:
Event.MetadataUpdateEvent me = (Event.MetadataUpdateEvent) e;
InotifyProtos.MetadataUpdateEventProto.Builder metaB =
InotifyProtos.MetadataUpdateEventProto.newBuilder()
.setPath(me.getPath())
.setType(metadataUpdateTypeConvert(me.getMetadataType()))
.setMtime(me.getMtime())
.setAtime(me.getAtime())
.setReplication(me.getReplication())
.setOwnerName(me.getOwnerName() == null ? "" :
me.getOwnerName())
.setGroupName(me.getGroupName() == null ? "" :
me.getGroupName())
.addAllAcls(me.getAcls() == null ?
Lists.<AclEntryProto>newArrayList() :
convertAclEntryProto(me.getAcls()))
.addAllXAttrs(me.getxAttrs() == null ?
Lists.<XAttrProto>newArrayList() :
convertXAttrProto(me.getxAttrs()))
.setXAttrsRemoved(me.isxAttrsRemoved());
if (me.getPerms() != null) {
metaB.setPerms(convert(me.getPerms()));
}
builder.addEvents(InotifyProtos.EventProto.newBuilder()
.setType(InotifyProtos.EventType.EVENT_METADATA)
.setContents(metaB.build().toByteString())
.build());
break;
case RENAME:
Event.RenameEvent re = (Event.RenameEvent) e;
builder.addEvents(InotifyProtos.EventProto.newBuilder()
.setType(InotifyProtos.EventType.EVENT_RENAME)
.setContents(
InotifyProtos.RenameEventProto.newBuilder()
.setSrcPath(re.getSrcPath())
.setDestPath(re.getDstPath())
.setTimestamp(re.getTimestamp()).build().toByteString()
).build());
break;
case APPEND:
Event.AppendEvent re2 = (Event.AppendEvent) e;
builder.addEvents(InotifyProtos.EventProto.newBuilder()
.setType(InotifyProtos.EventType.EVENT_APPEND)
.setContents(
InotifyProtos.AppendEventProto.newBuilder()
.setPath(re2.getPath()).build().toByteString()
).build());
break;
case UNLINK:
Event.UnlinkEvent ue = (Event.UnlinkEvent) e;
builder.addEvents(InotifyProtos.EventProto.newBuilder()
.setType(InotifyProtos.EventType.EVENT_UNLINK)
.setContents(
InotifyProtos.UnlinkEventProto.newBuilder()
.setPath(ue.getPath())
.setTimestamp(ue.getTimestamp()).build().toByteString()
).build());
break;
default:
throw new RuntimeException("Unexpected inotify event: " + e);
}
}
builder.setFirstTxid(el.getFirstTxid());
builder.setLastTxid(el.getLastTxid());
builder.setSyncTxid(el.getSyncTxid());
return GetEditsFromTxidResponseProto.newBuilder().setEventsList(
builder.build()).build();
}
public static HdfsProtos.CipherSuite convert(CipherSuite suite) {
switch (suite) {
case UNKNOWN:

80
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/client/IPCLoggerChannel.java
View File

@ -79,7 +79,17 @@ public class IPCLoggerChannel implements AsyncLogger {
protected final InetSocketAddress addr;
private QJournalProtocol proxy;
private final ListeningExecutorService executor;
/**
* Executes tasks submitted to it serially, on a single thread, in FIFO order
* (generally used for write tasks that should not be reordered).
*/
private final ListeningExecutorService singleThreadExecutor;
/**
* Executes tasks submitted to it in parallel with each other and with those
* submitted to singleThreadExecutor (generally used for read tasks that can
* be safely reordered and interleaved with writes).
*/
private final ListeningExecutorService parallelExecutor;
private long ipcSerial = 0;
private long epoch = -1;
private long committedTxId = HdfsConstants.INVALID_TXID;
@ -160,8 +170,10 @@ public class IPCLoggerChannel implements AsyncLogger {
DFSConfigKeys.DFS_QJOURNAL_QUEUE_SIZE_LIMIT_KEY,
DFSConfigKeys.DFS_QJOURNAL_QUEUE_SIZE_LIMIT_DEFAULT);
executor = MoreExecutors.listeningDecorator(
createExecutor());
singleThreadExecutor = MoreExecutors.listeningDecorator(
createSingleThreadExecutor());
parallelExecutor = MoreExecutors.listeningDecorator(
createParallelExecutor());
metrics = IPCLoggerChannelMetrics.create(this);
}
@ -183,7 +195,8 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public void close() {
// No more tasks may be submitted after this point.
executor.shutdown();
singleThreadExecutor.shutdown();
parallelExecutor.shutdown();
if (proxy != null) {
// TODO: this can hang for quite some time if the client
// is currently in the middle of a call to a downed JN.
@ -230,15 +243,30 @@ public class IPCLoggerChannel implements AsyncLogger {
* Separated out for easy overriding in tests.
*/
@VisibleForTesting
protected ExecutorService createExecutor() {
protected ExecutorService createSingleThreadExecutor() {
return Executors.newSingleThreadExecutor(
new ThreadFactoryBuilder()
.setDaemon(true)
.setNameFormat("Logger channel to " + addr)
.setNameFormat("Logger channel (from single-thread executor) to " +
addr)
.setUncaughtExceptionHandler(
UncaughtExceptionHandlers.systemExit())
.build());
}
/**
* Separated out for easy overriding in tests.
*/
@VisibleForTesting
protected ExecutorService createParallelExecutor() {
return Executors.newCachedThreadPool(
new ThreadFactoryBuilder()
.setDaemon(true)
.setNameFormat("Logger channel (from parallel executor) to " + addr)
.setUncaughtExceptionHandler(
UncaughtExceptionHandlers.systemExit())
.build());
}
@Override
public URL buildURLToFetchLogs(long segmentTxId) {
@ -286,7 +314,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@VisibleForTesting
void waitForAllPendingCalls() throws InterruptedException {
try {
executor.submit(new Runnable() {
singleThreadExecutor.submit(new Runnable() {
@Override
public void run() {
}
@ -299,7 +327,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Boolean> isFormatted() {
return executor.submit(new Callable<Boolean>() {
return singleThreadExecutor.submit(new Callable<Boolean>() {
@Override
public Boolean call() throws IOException {
return getProxy().isFormatted(journalId);
@ -309,7 +337,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<GetJournalStateResponseProto> getJournalState() {
return executor.submit(new Callable<GetJournalStateResponseProto>() {
return singleThreadExecutor.submit(new Callable<GetJournalStateResponseProto>() {
@Override
public GetJournalStateResponseProto call() throws IOException {
GetJournalStateResponseProto ret =
@ -323,7 +351,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<NewEpochResponseProto> newEpoch(
final long epoch) {
return executor.submit(new Callable<NewEpochResponseProto>() {
return singleThreadExecutor.submit(new Callable<NewEpochResponseProto>() {
@Override
public NewEpochResponseProto call() throws IOException {
return getProxy().newEpoch(journalId, nsInfo, epoch);
@ -347,7 +375,7 @@ public class IPCLoggerChannel implements AsyncLogger {
ListenableFuture<Void> ret = null;
try {
ret = executor.submit(new Callable<Void>() {
ret = singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
throwIfOutOfSync();
@ -464,7 +492,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> format(final NamespaceInfo nsInfo) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws Exception {
getProxy().format(journalId, nsInfo);
@ -476,7 +504,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> startLogSegment(final long txid,
final int layoutVersion) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().startLogSegment(createReqInfo(), txid, layoutVersion);
@ -497,7 +525,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> finalizeLogSegment(
final long startTxId, final long endTxId) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
throwIfOutOfSync();
@ -510,7 +538,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> purgeLogsOlderThan(final long minTxIdToKeep) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws Exception {
getProxy().purgeLogsOlderThan(createReqInfo(), minTxIdToKeep);
@ -522,7 +550,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<RemoteEditLogManifest> getEditLogManifest(
final long fromTxnId, final boolean inProgressOk) {
return executor.submit(new Callable<RemoteEditLogManifest>() {
return parallelExecutor.submit(new Callable<RemoteEditLogManifest>() {
@Override
public RemoteEditLogManifest call() throws IOException {
GetEditLogManifestResponseProto ret = getProxy().getEditLogManifest(
@ -538,7 +566,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<PrepareRecoveryResponseProto> prepareRecovery(
final long segmentTxId) {
return executor.submit(new Callable<PrepareRecoveryResponseProto>() {
return singleThreadExecutor.submit(new Callable<PrepareRecoveryResponseProto>() {
@Override
public PrepareRecoveryResponseProto call() throws IOException {
if (!hasHttpServerEndPoint()) {
@ -556,7 +584,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> acceptRecovery(
final SegmentStateProto log, final URL url) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().acceptRecovery(createReqInfo(), log, url);
@ -567,7 +595,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> discardSegments(final long startTxId) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().discardSegments(journalId, startTxId);
@ -578,7 +606,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> doPreUpgrade() {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().doPreUpgrade(journalId);
@ -589,7 +617,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> doUpgrade(final StorageInfo sInfo) {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().doUpgrade(journalId, sInfo);
@ -600,7 +628,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> doFinalize() {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().doFinalize(journalId);
@ -612,7 +640,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Boolean> canRollBack(final StorageInfo storage,
final StorageInfo prevStorage, final int targetLayoutVersion) {
return executor.submit(new Callable<Boolean>() {
return singleThreadExecutor.submit(new Callable<Boolean>() {
@Override
public Boolean call() throws IOException {
return getProxy().canRollBack(journalId, storage, prevStorage,
@ -623,7 +651,7 @@ public class IPCLoggerChannel implements AsyncLogger {
@Override
public ListenableFuture<Void> doRollback() {
return executor.submit(new Callable<Void>() {
return singleThreadExecutor.submit(new Callable<Void>() {
@Override
public Void call() throws IOException {
getProxy().doRollback(journalId);
@ -631,10 +659,10 @@ public class IPCLoggerChannel implements AsyncLogger {
}
});
}
@Override
public ListenableFuture<Long> getJournalCTime() {
return executor.submit(new Callable<Long>() {
return singleThreadExecutor.submit(new Callable<Long>() {
@Override
public Long call() throws IOException {
return getProxy().getJournalCTime(journalId);

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/Journal.java
View File

@ -651,7 +651,8 @@ public class Journal implements Closeable {
}
}
if (log != null && log.isInProgress()) {
logs.add(new RemoteEditLog(log.getStartTxId(), getHighestWrittenTxId()));
logs.add(new RemoteEditLog(log.getStartTxId(), getHighestWrittenTxId(),
true));
}
}

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogBackupInputStream.java
View File

@ -147,4 +147,9 @@ class EditLogBackupInputStream extends EditLogInputStream {
public void setMaxOpSize(int maxOpSize) {
reader.setMaxOpSize(maxOpSize);
}
@Override
public boolean isLocalLog() {
return true;
}
}

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogFileInputStream.java
View File

@ -507,4 +507,9 @@ public class EditLogFileInputStream extends EditLogInputStream {
reader.setMaxOpSize(maxOpSize);
}
}
@Override
public boolean isLocalLog() {
return log instanceof FileLog;
}
}

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogInputStream.java
View File

@ -203,4 +203,10 @@ public abstract class EditLogInputStream implements Closeable {
* Set the maximum opcode size in bytes.
*/
public abstract void setMaxOpSize(int maxOpSize);
/**
* Returns true if we are currently reading the log from a local disk or an
* even faster data source (e.g. a byte buffer).
*/
public abstract boolean isLocalLog();
}

65
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLog.java
View File

@ -188,6 +188,13 @@ public class FSEditLog implements LogsPurgeable {
*/
private final List<URI> sharedEditsDirs;
/**
* Take this lock when adding journals to or closing the JournalSet. Allows
* us to ensure that the JournalSet isn't closed or updated underneath us
* in selectInputStreams().
*/
private final Object journalSetLock = new Object();
private static class TransactionId {
public long txid;
@ -252,20 +259,22 @@ public class FSEditLog implements LogsPurgeable {
DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_MINIMUM_KEY,
DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_MINIMUM_DEFAULT);
journalSet = new JournalSet(minimumRedundantJournals);
synchronized(journalSetLock) {
journalSet = new JournalSet(minimumRedundantJournals);
for (URI u : dirs) {
boolean required = FSNamesystem.getRequiredNamespaceEditsDirs(conf)
.contains(u);
if (u.getScheme().equals(NNStorage.LOCAL_URI_SCHEME)) {
StorageDirectory sd = storage.getStorageDirectory(u);
if (sd != null) {
journalSet.add(new FileJournalManager(conf, sd, storage),
required, sharedEditsDirs.contains(u));
for (URI u : dirs) {
boolean required = FSNamesystem.getRequiredNamespaceEditsDirs(conf)
.contains(u);
if (u.getScheme().equals(NNStorage.LOCAL_URI_SCHEME)) {
StorageDirectory sd = storage.getStorageDirectory(u);
if (sd != null) {
journalSet.add(new FileJournalManager(conf, sd, storage),
required, sharedEditsDirs.contains(u));
}
} else {
journalSet.add(createJournal(u), required,
sharedEditsDirs.contains(u));
}
} else {
journalSet.add(createJournal(u), required,
sharedEditsDirs.contains(u));
}
}
@ -349,7 +358,9 @@ public class FSEditLog implements LogsPurgeable {
} finally {
if (journalSet != null && !journalSet.isEmpty()) {
try {
journalSet.close();
synchronized(journalSetLock) {
journalSet.close();
}
} catch (IOException ioe) {
LOG.warn("Error closing journalSet", ioe);
}
@ -606,7 +617,9 @@ public class FSEditLog implements LogsPurgeable {
"due to " + e.getMessage() + ". " +
"Unsynced transactions: " + (txid - synctxid);
LOG.fatal(msg, new Exception());
IOUtils.cleanup(LOG, journalSet);
synchronized(journalSetLock) {
IOUtils.cleanup(LOG, journalSet);
}
terminate(1, msg);
}
} finally {
@ -630,7 +643,9 @@ public class FSEditLog implements LogsPurgeable {
"Could not sync enough journals to persistent storage. "
+ "Unsynced transactions: " + (txid - synctxid);
LOG.fatal(msg, new Exception());
IOUtils.cleanup(LOG, journalSet);
synchronized(journalSetLock) {
IOUtils.cleanup(LOG, journalSet);
}
terminate(1, msg);
}
}
@ -1268,9 +1283,8 @@ public class FSEditLog implements LogsPurgeable {
/**
* Return the txid of the last synced transaction.
* For test use only
*/
synchronized long getSyncTxId() {
public synchronized long getSyncTxId() {
return synctxid;
}
@ -1307,7 +1321,9 @@ public class FSEditLog implements LogsPurgeable {
LOG.info("Registering new backup node: " + bnReg);
BackupJournalManager bjm = new BackupJournalManager(bnReg, nnReg);
journalSet.add(bjm, true);
synchronized(journalSetLock) {
journalSet.add(bjm, false);
}
}
synchronized void releaseBackupStream(NamenodeRegistration registration)
@ -1315,7 +1331,9 @@ public class FSEditLog implements LogsPurgeable {
BackupJournalManager bjm = this.findBackupJournal(registration);
if (bjm != null) {
LOG.info("Removing backup journal " + bjm);
journalSet.remove(bjm);
synchronized(journalSetLock) {
journalSet.remove(bjm);
}
}
}
@ -1443,11 +1461,16 @@ public class FSEditLog implements LogsPurgeable {
* @param recovery recovery context
* @param inProgressOk set to true if in-progress streams are OK
*/
public synchronized Collection<EditLogInputStream> selectInputStreams(
public Collection<EditLogInputStream> selectInputStreams(
long fromTxId, long toAtLeastTxId, MetaRecoveryContext recovery,
boolean inProgressOk) throws IOException {
List<EditLogInputStream> streams = new ArrayList<EditLogInputStream>();
selectInputStreams(streams, fromTxId, inProgressOk);
synchronized(journalSetLock) {
Preconditions.checkState(journalSet.isOpen(), "Cannot call " +
"selectInputStreams() on closed FSEditLog");
selectInputStreams(streams, fromTxId, inProgressOk);
}
try {
checkForGaps(streams, fromTxId, toAtLeastTxId, inProgressOk);

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FileJournalManager.java
View File

@ -186,17 +186,27 @@ public class FileJournalManager implements JournalManager {
List<EditLogFile> allLogFiles = matchEditLogs(currentDir);
List<RemoteEditLog> ret = Lists.newArrayListWithCapacity(
allLogFiles.size());
for (EditLogFile elf : allLogFiles) {
if (elf.hasCorruptHeader() || (!inProgressOk && elf.isInProgress())) {
continue;
}
if (elf.isInProgress()) {
try {
elf.validateLog();
} catch (IOException e) {
LOG.error("got IOException while trying to validate header of " +
elf + ". Skipping.", e);
continue;
}
}
if (elf.getFirstTxId() >= firstTxId) {
ret.add(new RemoteEditLog(elf.firstTxId, elf.lastTxId));
ret.add(new RemoteEditLog(elf.firstTxId, elf.lastTxId,
elf.isInProgress()));
} else if (elf.getFirstTxId() < firstTxId && firstTxId <= elf.getLastTxId()) {
// If the firstTxId is in the middle of an edit log segment. Return this
// anyway and let the caller figure out whether it wants to use it.
ret.add(new RemoteEditLog(elf.firstTxId, elf.lastTxId));
ret.add(new RemoteEditLog(elf.firstTxId, elf.lastTxId,
elf.isInProgress()));
}
}

146
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/InotifyFSEditLogOpTranslator.java Normal file
View File

@ -0,0 +1,146 @@
/**
* 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 org.apache.hadoop.hdfs.server.namenode;
import com.google.common.collect.Lists;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.protocol.Block;
import java.util.List;
/**
* Translates from edit log ops to inotify events.
*/
@InterfaceAudience.Private
public class InotifyFSEditLogOpTranslator {
private static long getSize(FSEditLogOp.AddCloseOp acOp) {
long size = 0;
for (Block b : acOp.getBlocks()) {
size += b.getNumBytes();
}
return size;
}
public static Event[] translate(FSEditLogOp op) {
switch(op.opCode) {
case OP_ADD:
FSEditLogOp.AddOp addOp = (FSEditLogOp.AddOp) op;
if (addOp.blocks.length == 0) { // create
return new Event[] { new Event.CreateEvent.Builder().path(addOp.path)
.ctime(addOp.atime)
.replication(addOp.replication)
.ownerName(addOp.permissions.getUserName())
.groupName(addOp.permissions.getGroupName())
.perms(addOp.permissions.getPermission())
.iNodeType(Event.CreateEvent.INodeType.FILE).build() };
} else {
return new Event[] { new Event.AppendEvent(addOp.path) };
}
case OP_CLOSE:
FSEditLogOp.CloseOp cOp = (FSEditLogOp.CloseOp) op;
return new Event[] {
new Event.CloseEvent(cOp.path, getSize(cOp), cOp.mtime) };
case OP_SET_REPLICATION:
FSEditLogOp.SetReplicationOp setRepOp = (FSEditLogOp.SetReplicationOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.REPLICATION)
.path(setRepOp.path)
.replication(setRepOp.replication).build() };
case OP_CONCAT_DELETE:
FSEditLogOp.ConcatDeleteOp cdOp = (FSEditLogOp.ConcatDeleteOp) op;
List<Event> events = Lists.newArrayList();
events.add(new Event.AppendEvent(cdOp.trg));
for (String src : cdOp.srcs) {
events.add(new Event.UnlinkEvent(src, cdOp.timestamp));
}
events.add(new Event.CloseEvent(cdOp.trg, -1, cdOp.timestamp));
return events.toArray(new Event[0]);
case OP_RENAME_OLD:
FSEditLogOp.RenameOldOp rnOpOld = (FSEditLogOp.RenameOldOp) op;
return new Event[] {
new Event.RenameEvent(rnOpOld.src, rnOpOld.dst, rnOpOld.timestamp) };
case OP_RENAME:
FSEditLogOp.RenameOp rnOp = (FSEditLogOp.RenameOp) op;
return new Event[] {
new Event.RenameEvent(rnOp.src, rnOp.dst, rnOp.timestamp) };
case OP_DELETE:
FSEditLogOp.DeleteOp delOp = (FSEditLogOp.DeleteOp) op;
return new Event[] { new Event.UnlinkEvent(delOp.path, delOp.timestamp) };
case OP_MKDIR:
FSEditLogOp.MkdirOp mkOp = (FSEditLogOp.MkdirOp) op;
return new Event[] { new Event.CreateEvent.Builder().path(mkOp.path)
.ctime(mkOp.timestamp)
.ownerName(mkOp.permissions.getUserName())
.groupName(mkOp.permissions.getGroupName())
.perms(mkOp.permissions.getPermission())
.iNodeType(Event.CreateEvent.INodeType.DIRECTORY).build() };
case OP_SET_PERMISSIONS:
FSEditLogOp.SetPermissionsOp permOp = (FSEditLogOp.SetPermissionsOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.PERMS)
.path(permOp.src)
.perms(permOp.permissions).build() };
case OP_SET_OWNER:
FSEditLogOp.SetOwnerOp ownOp = (FSEditLogOp.SetOwnerOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.OWNER)
.path(ownOp.src)
.ownerName(ownOp.username).groupName(ownOp.groupname).build() };
case OP_TIMES:
FSEditLogOp.TimesOp timesOp = (FSEditLogOp.TimesOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.TIMES)
.path(timesOp.path)
.atime(timesOp.atime).mtime(timesOp.mtime).build() };
case OP_SYMLINK:
FSEditLogOp.SymlinkOp symOp = (FSEditLogOp.SymlinkOp) op;
return new Event[] { new Event.CreateEvent.Builder().path(symOp.path)
.ctime(symOp.atime)
.ownerName(symOp.permissionStatus.getUserName())
.groupName(symOp.permissionStatus.getGroupName())
.perms(symOp.permissionStatus.getPermission())
.symlinkTarget(symOp.value)
.iNodeType(Event.CreateEvent.INodeType.SYMLINK).build() };
case OP_REMOVE_XATTR:
FSEditLogOp.RemoveXAttrOp rxOp = (FSEditLogOp.RemoveXAttrOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.XATTRS)
.path(rxOp.src)
.xAttrs(rxOp.xAttrs)
.xAttrsRemoved(true).build() };
case OP_SET_XATTR:
FSEditLogOp.SetXAttrOp sxOp = (FSEditLogOp.SetXAttrOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.XATTRS)
.path(sxOp.src)
.xAttrs(sxOp.xAttrs)
.xAttrsRemoved(false).build() };
case OP_SET_ACL:
FSEditLogOp.SetAclOp saOp = (FSEditLogOp.SetAclOp) op;
return new Event[] { new Event.MetadataUpdateEvent.Builder()
.metadataType(Event.MetadataUpdateEvent.MetadataType.ACLS)
.path(saOp.src)
.acls(saOp.aclEntries).build() };
default:
return null;
}
}
}

38
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/JournalSet.java
View File

@ -57,6 +57,17 @@ import com.google.common.collect.Sets;
public class JournalSet implements JournalManager {
static final Log LOG = LogFactory.getLog(FSEditLog.class);
private static final Comparator<EditLogInputStream>
LOCAL_LOG_PREFERENCE_COMPARATOR = new Comparator<EditLogInputStream>() {
@Override
public int compare(EditLogInputStream elis1, EditLogInputStream elis2) {
// we want local logs to be ordered earlier in the collection, and true
// is considered larger than false, so we want to invert the booleans here
return ComparisonChain.start().compare(!elis1.isLocalLog(),
!elis2.isLocalLog()).result();
}
};
static final public Comparator<EditLogInputStream>
EDIT_LOG_INPUT_STREAM_COMPARATOR = new Comparator<EditLogInputStream>() {
@ -181,6 +192,8 @@ public class JournalSet implements JournalManager {
private final List<JournalAndStream> journals =
new CopyOnWriteArrayList<JournalSet.JournalAndStream>();
final int minimumRedundantJournals;
private boolean closed;
JournalSet(int minimumRedundantResources) {
this.minimumRedundantJournals = minimumRedundantResources;
@ -234,6 +247,11 @@ public class JournalSet implements JournalManager {
jas.close();
}
}, "close journal");
closed = true;
}
public boolean isOpen() {
return !closed;
}
/**
@ -282,10 +300,25 @@ public class JournalSet implements JournalManager {
if (acc.isEmpty()) {
acc.add(elis);
} else {
long accFirstTxId = acc.get(0).getFirstTxId();
EditLogInputStream accFirst = acc.get(0);
long accFirstTxId = accFirst.getFirstTxId();
if (accFirstTxId == elis.getFirstTxId()) {
acc.add(elis);
// if we have a finalized log segment available at this txid,
// we should throw out all in-progress segments at this txid
if (elis.isInProgress()) {
if (accFirst.isInProgress()) {
acc.add(elis);
}
} else {
if (accFirst.isInProgress()) {
acc.clear();
}
acc.add(elis);
}
} else if (accFirstTxId < elis.getFirstTxId()) {
// try to read from the local logs first since the throughput should
// be higher
Collections.sort(acc, LOCAL_LOG_PREFERENCE_COMPARATOR);
outStreams.add(new RedundantEditLogInputStream(acc, fromTxId));
acc.clear();
acc.add(elis);
@ -297,6 +330,7 @@ public class JournalSet implements JournalManager {
}
}
if (!acc.isEmpty()) {
Collections.sort(acc, LOCAL_LOG_PREFERENCE_COMPARATOR);
outStreams.add(new RedundantEditLogInputStream(acc, fromTxId));
acc.clear();
}

114
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
View File

@ -34,6 +34,7 @@ import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.google.common.collect.Lists;
import org.apache.commons.logging.Log;
import org.apache.hadoop.HadoopIllegalArgumentException;
import org.apache.hadoop.conf.Configuration;
@ -66,6 +67,8 @@ import org.apache.hadoop.ha.protocolPB.HAServiceProtocolServerSideTranslatorPB;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.HDFSPolicyProvider;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.inotify.EventsList;
import org.apache.hadoop.hdfs.protocol.AclException;
import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
@ -1466,5 +1469,116 @@ class NameNodeRpcServer implements NamenodeProtocols {
public void checkAccess(String path, FsAction mode) throws IOException {
namesystem.checkAccess(path, mode);
}
@Override // ClientProtocol
public long getCurrentEditLogTxid() throws IOException {
namesystem.checkOperation(OperationCategory.READ); // only active
namesystem.checkSuperuserPrivilege();
// if it's not yet open for write, we may be in the process of transitioning
// from standby to active and may not yet know what the latest committed
// txid is
return namesystem.getEditLog().isOpenForWrite() ?
namesystem.getEditLog().getLastWrittenTxId() : -1;
}
private static FSEditLogOp readOp(EditLogInputStream elis)
throws IOException {
try {
return elis.readOp();
// we can get the below two exceptions if a segment is deleted
// (because we have accumulated too many edits) or (for the local journal/
// no-QJM case only) if a in-progress segment is finalized under us ...
// no need to throw an exception back to the client in this case
} catch (FileNotFoundException e) {
LOG.debug("Tried to read from deleted or moved edit log segment", e);
return null;
} catch (TransferFsImage.HttpGetFailedException e) {
LOG.debug("Tried to read from deleted edit log segment", e);
return null;
}
}
@Override // ClientProtocol
public EventsList getEditsFromTxid(long txid) throws IOException {
namesystem.checkOperation(OperationCategory.READ); // only active
namesystem.checkSuperuserPrivilege();
int maxEventsPerRPC = nn.conf.getInt(
DFSConfigKeys.DFS_NAMENODE_INOTIFY_MAX_EVENTS_PER_RPC_KEY,
DFSConfigKeys.DFS_NAMENODE_INOTIFY_MAX_EVENTS_PER_RPC_DEFAULT);
FSEditLog log = namesystem.getFSImage().getEditLog();
long syncTxid = log.getSyncTxId();
// If we haven't synced anything yet, we can only read finalized
// segments since we can't reliably determine which txns in in-progress
// segments have actually been committed (e.g. written to a quorum of JNs).
// If we have synced txns, we can definitely read up to syncTxid since
// syncTxid is only updated after a transaction is committed to all
// journals. (In-progress segments written by old writers are already
// discarded for us, so if we read any in-progress segments they are
// guaranteed to have been written by this NameNode.)
boolean readInProgress = syncTxid > 0;
List<Event> events = Lists.newArrayList();
long maxSeenTxid = -1;
long firstSeenTxid = -1;
if (syncTxid > 0 && txid > syncTxid) {
// we can't read past syncTxid, so there's no point in going any further
return new EventsList(events, firstSeenTxid, maxSeenTxid, syncTxid);
}
Collection<EditLogInputStream> streams = null;
try {
streams = log.selectInputStreams(txid, 0, null, readInProgress);
} catch (IllegalStateException e) { // can happen if we have
// transitioned out of active and haven't yet transitioned to standby
// and are using QJM -- the edit log will be closed and this exception
// will result
LOG.info("NN is transitioning from active to standby and FSEditLog " +
"is closed -- could not read edits");
return new EventsList(events, firstSeenTxid, maxSeenTxid, syncTxid);
}
boolean breakOuter = false;
for (EditLogInputStream elis : streams) {
// our assumption in this code is the EditLogInputStreams are ordered by
// starting txid
try {
FSEditLogOp op = null;
while ((op = readOp(elis)) != null) {
// break out of here in the unlikely event that syncTxid is so
// out of date that its segment has already been deleted, so the first
// txid we get is greater than syncTxid
if (syncTxid > 0 && op.getTransactionId() > syncTxid) {
breakOuter = true;
break;
}
Event[] eventsFromOp = InotifyFSEditLogOpTranslator.translate(op);
if (eventsFromOp != null) {
events.addAll(Arrays.asList(eventsFromOp));
}
if (op.getTransactionId() > maxSeenTxid) {
maxSeenTxid = op.getTransactionId();
}
if (firstSeenTxid == -1) {
firstSeenTxid = op.getTransactionId();
}
if (events.size() >= maxEventsPerRPC || (syncTxid > 0 &&
op.getTransactionId() == syncTxid)) {
// we're done
breakOuter = true;
break;
}
}
} finally {
elis.close();
}
if (breakOuter) {
break;
}
}
return new EventsList(events, firstSeenTxid, maxSeenTxid, syncTxid);
}
}

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/RedundantEditLogInputStream.java
View File

@ -279,4 +279,9 @@ class RedundantEditLogInputStream extends EditLogInputStream {
elis.setMaxOpSize(maxOpSize);
}
}
@Override
public boolean isLocalLog() {
return streams[curIdx].isLocalLog();
}
}

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/TransferFsImage.java
View File

@ -63,7 +63,7 @@ import org.apache.http.client.utils.URIBuilder;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.Lists;
import org.mortbay.jetty.EofException;
/**
* This class provides fetching a specified file from the NameNode.
@ -370,6 +370,9 @@ public class TransferFsImage {
throttler.throttle(num, canceler);
}
}
} catch (EofException e) {
LOG.info("Connection closed by client");
out = null; // so we don't close in the finally
} finally {
if (out != null) {
out.close();

20
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/ClientNamenodeProtocol.proto
View File

@ -33,6 +33,7 @@ import "hdfs.proto";
import "acl.proto";
import "xattr.proto";
import "encryption.proto";
import "inotify.proto";
/**
* The ClientNamenodeProtocol Service defines the interface between a client
@ -664,6 +665,21 @@ message CheckAccessRequestProto {
message CheckAccessResponseProto { // void response
}
message GetCurrentEditLogTxidRequestProto {
}
message GetCurrentEditLogTxidResponseProto {
required int64 txid = 1;
}
message GetEditsFromTxidRequestProto {
required int64 txid = 1;
}
message GetEditsFromTxidResponseProto {
required EventsListProto eventsList = 1;
}
service ClientNamenodeProtocol {
rpc getBlockLocations(GetBlockLocationsRequestProto)
returns(GetBlockLocationsResponseProto);
@ -801,4 +817,8 @@ service ClientNamenodeProtocol {
returns(ListEncryptionZonesResponseProto);
rpc getEZForPath(GetEZForPathRequestProto)
returns(GetEZForPathResponseProto);
rpc getCurrentEditLogTxid(GetCurrentEditLogTxidRequestProto)
returns(GetCurrentEditLogTxidResponseProto);
rpc getEditsFromTxid(GetEditsFromTxidRequestProto)
returns(GetEditsFromTxidResponseProto);
}

117
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/inotify.proto Normal file
View File

@ -0,0 +1,117 @@
/**
* 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.
*/
/**
* These .proto interfaces are private and stable.
* Please see http://wiki.apache.org/hadoop/Compatibility
* for what changes are allowed for a *stable* .proto interface.
*/
// This file contains protocol buffers used to communicate edits to clients
// as part of the inotify system.
option java_package = "org.apache.hadoop.hdfs.protocol.proto";
option java_outer_classname = "InotifyProtos";
option java_generate_equals_and_hash = true;
package hadoop.hdfs;
import "acl.proto";
import "xattr.proto";
import "hdfs.proto";
enum EventType {
EVENT_CREATE = 0x0;
EVENT_CLOSE = 0x1;
EVENT_APPEND = 0x2;
EVENT_RENAME = 0x3;
EVENT_METADATA = 0x4;
EVENT_UNLINK = 0x5;
}
message EventProto {
required EventType type = 1;
required bytes contents = 2;
}
enum INodeType {
I_TYPE_FILE = 0x0;
I_TYPE_DIRECTORY = 0x1;
I_TYPE_SYMLINK = 0x2;
}
enum MetadataUpdateType {
META_TYPE_TIMES = 0x0;
META_TYPE_REPLICATION = 0x1;
META_TYPE_OWNER = 0x2;
META_TYPE_PERMS = 0x3;
META_TYPE_ACLS = 0x4;
META_TYPE_XATTRS = 0x5;
}
message CreateEventProto {
required INodeType type = 1;
required string path = 2;
required int64 ctime = 3;
required string ownerName = 4;
required string groupName = 5;
required FsPermissionProto perms = 6;
optional int32 replication = 7;
optional string symlinkTarget = 8;
}
message CloseEventProto {
required string path = 1;
required int64 fileSize = 2;
required int64 timestamp = 3;
}
message AppendEventProto {
required string path = 1;
}
message RenameEventProto {
required string srcPath = 1;
required string destPath = 2;
required int64 timestamp = 3;
}
message MetadataUpdateEventProto {
required string path = 1;
required MetadataUpdateType type = 2;
optional int64 mtime = 3;
optional int64 atime = 4;
optional int32 replication = 5;
optional string ownerName = 6;
optional string groupName = 7;
optional FsPermissionProto perms = 8;
repeated AclEntryProto acls = 9;
repeated XAttrProto xAttrs = 10;
optional bool xAttrsRemoved = 11;
}
message UnlinkEventProto {
required string path = 1;
required int64 timestamp = 2;
}
message EventsListProto {
repeated EventProto events = 1;
required int64 firstTxid = 2;
required int64 lastTxid = 3;
required int64 syncTxid = 4;
}

10
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
View File

@ -2058,4 +2058,14 @@
</description>
</property>
<property>
<name>dfs.namenode.inotify.max.events.per.rpc</name>
<value>1000</value>
<description>Maximum number of events that will be sent to an inotify client
in a single RPC response. The default value attempts to amortize away
the overhead for this RPC while avoiding huge memory requirements for the
client and NameNode (1000 events should consume no more than 1 MB.)
</description>
</property>
</configuration>

430
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSInotifyEventInputStream.java Normal file
View File

@ -0,0 +1,430 @@
/**
* 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 org.apache.hadoop.hdfs;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.inotify.MissingEventsException;
import org.apache.hadoop.hdfs.qjournal.MiniQJMHACluster;
import org.apache.hadoop.hdfs.server.namenode.FSEditLogOpCodes;
import org.apache.hadoop.hdfs.server.namenode.ha.HATestUtil;
import org.apache.hadoop.util.ExitUtil;
import org.junit.Assert;
import org.junit.Test;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URISyntaxException;
import java.util.EnumSet;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class TestDFSInotifyEventInputStream {
private static final int BLOCK_SIZE = 1024;
private static final Log LOG = LogFactory.getLog(
TestDFSInotifyEventInputStream.class);
private static Event waitForNextEvent(DFSInotifyEventInputStream eis)
throws IOException, MissingEventsException {
Event next = null;
while ((next = eis.poll()) == null);
return next;
}
/**
* If this test fails, check whether the newly added op should map to an
* inotify event, and if so, establish the mapping in
* {@link org.apache.hadoop.hdfs.server.namenode.InotifyFSEditLogOpTranslator}
* and update testBasic() to include the new op.
*/
@Test
public void testOpcodeCount() {
Assert.assertTrue(FSEditLogOpCodes.values().length == 46);
}
/**
* Tests all FsEditLogOps that are converted to inotify events.
*/
@Test(timeout = 120000)
@SuppressWarnings("deprecation")
public void testBasic() throws IOException, URISyntaxException,
InterruptedException, MissingEventsException {
Configuration conf = new HdfsConfiguration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_ACLS_ENABLED_KEY, true);
// so that we can get an atime change
conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, 1);
MiniQJMHACluster.Builder builder = new MiniQJMHACluster.Builder(conf);
builder.getDfsBuilder().numDataNodes(2);
MiniQJMHACluster cluster = builder.build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
DFSClient client = new DFSClient(cluster.getDfsCluster().getNameNode(0)
.getNameNodeAddress(), conf);
FileSystem fs = cluster.getDfsCluster().getFileSystem(0);
DFSTestUtil.createFile(fs, new Path("/file"), BLOCK_SIZE, (short) 1, 0L);
DFSTestUtil.createFile(fs, new Path("/file3"), BLOCK_SIZE, (short) 1, 0L);
DFSTestUtil.createFile(fs, new Path("/file5"), BLOCK_SIZE, (short) 1, 0L);
DFSInotifyEventInputStream eis = client.getInotifyEventStream();
client.rename("/file", "/file4", null); // RenameOp -> RenameEvent
client.rename("/file4", "/file2"); // RenameOldOp -> RenameEvent
// DeleteOp, AddOp -> UnlinkEvent, CreateEvent
OutputStream os = client.create("/file2", true, (short) 2, BLOCK_SIZE);
os.write(new byte[BLOCK_SIZE]);
os.close(); // CloseOp -> CloseEvent
// AddOp -> AppendEvent
os = client.append("/file2", BLOCK_SIZE, null, null);
os.write(new byte[BLOCK_SIZE]);
os.close(); // CloseOp -> CloseEvent
Thread.sleep(10); // so that the atime will get updated on the next line
client.open("/file2").read(new byte[1]); // TimesOp -> MetadataUpdateEvent
// SetReplicationOp -> MetadataUpdateEvent
client.setReplication("/file2", (short) 1);
// ConcatDeleteOp -> AppendEvent, UnlinkEvent, CloseEvent
client.concat("/file2", new String[]{"/file3"});
client.delete("/file2", false); // DeleteOp -> UnlinkEvent
client.mkdirs("/dir", null, false); // MkdirOp -> CreateEvent
// SetPermissionsOp -> MetadataUpdateEvent
client.setPermission("/dir", FsPermission.valueOf("-rw-rw-rw-"));
// SetOwnerOp -> MetadataUpdateEvent
client.setOwner("/dir", "username", "groupname");
client.createSymlink("/dir", "/dir2", false); // SymlinkOp -> CreateEvent
client.setXAttr("/file5", "user.field", "value".getBytes(), EnumSet.of(
XAttrSetFlag.CREATE)); // SetXAttrOp -> MetadataUpdateEvent
// RemoveXAttrOp -> MetadataUpdateEvent
client.removeXAttr("/file5", "user.field");
// SetAclOp -> MetadataUpdateEvent
client.setAcl("/file5", AclEntry.parseAclSpec(
"user::rwx,user:foo:rw-,group::r--,other::---", true));
client.removeAcl("/file5"); // SetAclOp -> MetadataUpdateEvent
Event next = null;
// RenameOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.RENAME);
Event.RenameEvent re = (Event.RenameEvent) next;
Assert.assertTrue(re.getDstPath().equals("/file4"));
Assert.assertTrue(re.getSrcPath().equals("/file"));
Assert.assertTrue(re.getTimestamp() > 0);
long eventsBehind = eis.getEventsBehindEstimate();
// RenameOldOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.RENAME);
Event.RenameEvent re2 = (Event.RenameEvent) next;
Assert.assertTrue(re2.getDstPath().equals("/file2"));
Assert.assertTrue(re2.getSrcPath().equals("/file4"));
Assert.assertTrue(re.getTimestamp() > 0);
// DeleteOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.UNLINK);
Assert.assertTrue(((Event.UnlinkEvent) next).getPath().equals("/file2"));
// AddOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CREATE);
Event.CreateEvent ce = (Event.CreateEvent) next;
Assert.assertTrue(ce.getiNodeType() == Event.CreateEvent.INodeType.FILE);
Assert.assertTrue(ce.getPath().equals("/file2"));
Assert.assertTrue(ce.getCtime() > 0);
Assert.assertTrue(ce.getReplication() > 0);
Assert.assertTrue(ce.getSymlinkTarget() == null);
// CloseOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CLOSE);
Event.CloseEvent ce2 = (Event.CloseEvent) next;
Assert.assertTrue(ce2.getPath().equals("/file2"));
Assert.assertTrue(ce2.getFileSize() > 0);
Assert.assertTrue(ce2.getTimestamp() > 0);
// AddOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.APPEND);
Assert.assertTrue(((Event.AppendEvent) next).getPath().equals("/file2"));
// CloseOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CLOSE);
Assert.assertTrue(((Event.CloseEvent) next).getPath().equals("/file2"));
// TimesOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue.getPath().equals("/file2"));
Assert.assertTrue(mue.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.TIMES);
// SetReplicationOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue2 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue2.getPath().equals("/file2"));
Assert.assertTrue(mue2.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.REPLICATION);
Assert.assertTrue(mue2.getReplication() == 1);
// ConcatDeleteOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.APPEND);
Assert.assertTrue(((Event.AppendEvent) next).getPath().equals("/file2"));
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.UNLINK);
Event.UnlinkEvent ue2 = (Event.UnlinkEvent) next;
Assert.assertTrue(ue2.getPath().equals("/file3"));
Assert.assertTrue(ue2.getTimestamp() > 0);
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CLOSE);
Event.CloseEvent ce3 = (Event.CloseEvent) next;
Assert.assertTrue(ce3.getPath().equals("/file2"));
Assert.assertTrue(ce3.getTimestamp() > 0);
// DeleteOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.UNLINK);
Event.UnlinkEvent ue = (Event.UnlinkEvent) next;
Assert.assertTrue(ue.getPath().equals("/file2"));
Assert.assertTrue(ue.getTimestamp() > 0);
// MkdirOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CREATE);
Event.CreateEvent ce4 = (Event.CreateEvent) next;
Assert.assertTrue(ce4.getiNodeType() ==
Event.CreateEvent.INodeType.DIRECTORY);
Assert.assertTrue(ce4.getPath().equals("/dir"));
Assert.assertTrue(ce4.getCtime() > 0);
Assert.assertTrue(ce4.getReplication() == 0);
Assert.assertTrue(ce4.getSymlinkTarget() == null);
// SetPermissionsOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue3 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue3.getPath().equals("/dir"));
Assert.assertTrue(mue3.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.PERMS);
Assert.assertTrue(mue3.getPerms().toString().contains("rw-rw-rw-"));
// SetOwnerOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue4 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue4.getPath().equals("/dir"));
Assert.assertTrue(mue4.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.OWNER);
Assert.assertTrue(mue4.getOwnerName().equals("username"));
Assert.assertTrue(mue4.getGroupName().equals("groupname"));
// SymlinkOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CREATE);
Event.CreateEvent ce5 = (Event.CreateEvent) next;
Assert.assertTrue(ce5.getiNodeType() ==
Event.CreateEvent.INodeType.SYMLINK);
Assert.assertTrue(ce5.getPath().equals("/dir2"));
Assert.assertTrue(ce5.getCtime() > 0);
Assert.assertTrue(ce5.getReplication() == 0);
Assert.assertTrue(ce5.getSymlinkTarget().equals("/dir"));
// SetXAttrOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue5 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue5.getPath().equals("/file5"));
Assert.assertTrue(mue5.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.XATTRS);
Assert.assertTrue(mue5.getxAttrs().size() == 1);
Assert.assertTrue(mue5.getxAttrs().get(0).getName().contains("field"));
Assert.assertTrue(!mue5.isxAttrsRemoved());
// RemoveXAttrOp
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue6 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue6.getPath().equals("/file5"));
Assert.assertTrue(mue6.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.XATTRS);
Assert.assertTrue(mue6.getxAttrs().size() == 1);
Assert.assertTrue(mue6.getxAttrs().get(0).getName().contains("field"));
Assert.assertTrue(mue6.isxAttrsRemoved());
// SetAclOp (1)
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue7 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue7.getPath().equals("/file5"));
Assert.assertTrue(mue7.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.ACLS);
Assert.assertTrue(mue7.getAcls().contains(
AclEntry.parseAclEntry("user::rwx", true)));
// SetAclOp (2)
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue8 = (Event.MetadataUpdateEvent) next;
Assert.assertTrue(mue8.getPath().equals("/file5"));
Assert.assertTrue(mue8.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.ACLS);
Assert.assertTrue(mue8.getAcls() == null);
// Returns null when there are no further events
Assert.assertTrue(eis.poll() == null);
// make sure the estimate hasn't changed since the above assertion
// tells us that we are fully caught up to the current namesystem state
// and we should not have been behind at all when eventsBehind was set
// either, since there were few enough events that they should have all
// been read to the client during the first poll() call
Assert.assertTrue(eis.getEventsBehindEstimate() == eventsBehind);
} finally {
cluster.shutdown();
}
}
@Test(timeout = 120000)
public void testNNFailover() throws IOException, URISyntaxException,
MissingEventsException {
Configuration conf = new HdfsConfiguration();
MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
DFSClient client = ((DistributedFileSystem) HATestUtil.configureFailoverFs
(cluster.getDfsCluster(), conf)).dfs;
DFSInotifyEventInputStream eis = client.getInotifyEventStream();
for (int i = 0; i < 10; i++) {
client.mkdirs("/dir" + i, null, false);
}
cluster.getDfsCluster().shutdownNameNode(0);
cluster.getDfsCluster().transitionToActive(1);
Event next = null;
// we can read all of the edits logged by the old active from the new
// active
for (int i = 0; i < 10; i++) {
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CREATE);
Assert.assertTrue(((Event.CreateEvent) next).getPath().equals("/dir" +
i));
}
Assert.assertTrue(eis.poll() == null);
} finally {
cluster.shutdown();
}
}
@Test(timeout = 120000)
public void testTwoActiveNNs() throws IOException, MissingEventsException {
Configuration conf = new HdfsConfiguration();
MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
DFSClient client0 = new DFSClient(cluster.getDfsCluster().getNameNode(0)
.getNameNodeAddress(), conf);
DFSClient client1 = new DFSClient(cluster.getDfsCluster().getNameNode(1)
.getNameNodeAddress(), conf);
DFSInotifyEventInputStream eis = client0.getInotifyEventStream();
for (int i = 0; i < 10; i++) {
client0.mkdirs("/dir" + i, null, false);
}
cluster.getDfsCluster().transitionToActive(1);
for (int i = 10; i < 20; i++) {
client1.mkdirs("/dir" + i, null, false);
}
// make sure that the old active can't read any further than the edits
// it logged itself (it has no idea whether the in-progress edits from
// the other writer have actually been committed)
Event next = null;
for (int i = 0; i < 10; i++) {
next = waitForNextEvent(eis);
Assert.assertTrue(next.getEventType() == Event.EventType.CREATE);
Assert.assertTrue(((Event.CreateEvent) next).getPath().equals("/dir" +
i));
}
Assert.assertTrue(eis.poll() == null);
} finally {
try {
cluster.shutdown();
} catch (ExitUtil.ExitException e) {
// expected because the old active will be unable to flush the
// end-of-segment op since it is fenced
}
}
}
@Test(timeout = 120000)
public void testReadEventsWithTimeout() throws IOException,
InterruptedException, MissingEventsException {
Configuration conf = new HdfsConfiguration();
MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
final DFSClient client = new DFSClient(cluster.getDfsCluster()
.getNameNode(0).getNameNodeAddress(), conf);
DFSInotifyEventInputStream eis = client.getInotifyEventStream();
ScheduledExecutorService ex = Executors
.newSingleThreadScheduledExecutor();
ex.schedule(new Runnable() {
@Override
public void run() {
try {
client.mkdirs("/dir", null, false);
} catch (IOException e) {
// test will fail
LOG.error("Unable to create /dir", e);
}
}
}, 1, TimeUnit.SECONDS);
// a very generous wait period -- the edit will definitely have been
// processed by the time this is up
Event next = eis.poll(5, TimeUnit.SECONDS);
Assert.assertTrue(next != null);
Assert.assertTrue(next.getEventType() == Event.EventType.CREATE);
Assert.assertTrue(((Event.CreateEvent) next).getPath().equals("/dir"));
} finally {
cluster.shutdown();
}
}
}

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/MiniQJMHACluster.java
View File

@ -56,7 +56,9 @@ public class MiniQJMHACluster {
public Builder(Configuration conf) {
this.conf = conf;
this.dfsBuilder = new MiniDFSCluster.Builder(conf);
// most QJMHACluster tests don't need DataNodes, so we'll make
// this the default
this.dfsBuilder = new MiniDFSCluster.Builder(conf).numDataNodes(0);
}
public MiniDFSCluster.Builder getDfsBuilder() {
@ -102,7 +104,7 @@ public class MiniQJMHACluster {
cluster = builder.dfsBuilder.nnTopology(topology)
.manageNameDfsSharedDirs(false).build();
cluster.waitActive();
cluster.shutdown();
cluster.shutdownNameNodes();
// initialize the journal nodes
Configuration confNN0 = cluster.getConfiguration(0);

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/client/TestQJMWithFaults.java
View File

@ -382,7 +382,7 @@ public class TestQJMWithFaults {
}
@Override
protected ExecutorService createExecutor() {
protected ExecutorService createSingleThreadExecutor() {
return MoreExecutors.sameThreadExecutor();
}
}

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/client/TestQuorumJournalManager.java
View File

@ -939,7 +939,7 @@ public class TestQuorumJournalManager {
public AsyncLogger createLogger(Configuration conf, NamespaceInfo nsInfo,
String journalId, InetSocketAddress addr) {
AsyncLogger logger = new IPCLoggerChannel(conf, nsInfo, journalId, addr) {
protected ExecutorService createExecutor() {
protected ExecutorService createSingleThreadExecutor() {
// Don't parallelize calls to the quorum in the tests.
// This makes the tests more deterministic.
return MoreExecutors.sameThreadExecutor();

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestEditLog.java
View File

@ -916,6 +916,10 @@ public class TestEditLog {
public void setMaxOpSize(int maxOpSize) {
reader.setMaxOpSize(maxOpSize);
}
@Override public boolean isLocalLog() {
return true;
}
}
@Test