HDFS-10549. Correctly revoke file leases when closing files. Contributed by Yiqun Lin.

This commit is contained in:
Xiao Chen 2016-08-17 15:22:42 -07:00
parent c57523163f
commit 2aa5e2c403
4 changed files with 68 additions and 4 deletions

View File

@ -463,7 +463,7 @@ private void beginFileLease(final long inodeId, final DFSOutputStream out)
}
/** Stop renewal of lease for the file. */
void endFileLease(final long inodeId) throws IOException {
void endFileLease(final long inodeId) {
getLeaseRenewer().closeFile(inodeId, this);
}

View File

@ -57,6 +57,7 @@
import org.apache.hadoop.hdfs.server.namenode.SafeModeException;
import org.apache.hadoop.hdfs.util.ByteArrayManager;
import org.apache.hadoop.io.EnumSetWritable;
import org.apache.hadoop.io.MultipleIOException;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.token.Token;
@ -732,6 +733,7 @@ protected synchronized void start() {
* resources associated with this stream.
*/
void abort() throws IOException {
final MultipleIOException.Builder b = new MultipleIOException.Builder();
synchronized (this) {
if (isClosed()) {
return;
@ -740,9 +742,19 @@ void abort() throws IOException {
new IOException("Lease timeout of "
+ (dfsClient.getConf().getHdfsTimeout() / 1000)
+ " seconds expired."));
closeThreads(true);
try {
closeThreads(true);
} catch (IOException e) {
b.add(e);
}
}
dfsClient.endFileLease(fileId);
final IOException ioe = b.build();
if (ioe != null) {
throw ioe;
}
}
boolean isClosed() {
@ -775,13 +787,21 @@ protected void closeThreads(boolean force) throws IOException {
*/
@Override
public void close() throws IOException {
final MultipleIOException.Builder b = new MultipleIOException.Builder();
synchronized (this) {
try (TraceScope ignored = dfsClient.newPathTraceScope(
"DFSOutputStream#close", src)) {
closeImpl();
} catch (IOException e) {
b.add(e);
}
}
dfsClient.endFileLease(fileId);
final IOException ioe = b.build();
if (ioe != null) {
throw ioe;
}
}
protected synchronized void closeImpl() throws IOException {

View File

@ -798,6 +798,7 @@ protected synchronized void start() {
@Override
void abort() throws IOException {
final MultipleIOException.Builder b = new MultipleIOException.Builder();
synchronized (this) {
if (isClosed()) {
return;
@ -808,9 +809,19 @@ void abort() throws IOException {
+ (dfsClient.getConf().getHdfsTimeout() / 1000)
+ " seconds expired."));
}
closeThreads(true);
try {
closeThreads(true);
} catch (IOException e) {
b.add(e);
}
}
dfsClient.endFileLease(fileId);
final IOException ioe = b.build();
if (ioe != null) {
throw ioe;
}
}
@Override

View File

@ -71,6 +71,7 @@
import org.apache.hadoop.fs.StorageType;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
import org.apache.hadoop.hdfs.client.impl.LeaseRenewer;
import org.apache.hadoop.hdfs.DFSOpsCountStatistics.OpType;
import org.apache.hadoop.hdfs.net.Peer;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
@ -96,7 +97,6 @@
import org.junit.Test;
import org.mockito.InOrder;
import org.mockito.internal.util.reflection.Whitebox;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -1373,4 +1373,37 @@ public void testTotalDfsUsed() throws Exception {
}
}
@Test
public void testDFSCloseFilesBeingWritten() throws Exception {
Configuration conf = getTestConfiguration();
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
DistributedFileSystem fileSys = cluster.getFileSystem();
// Create one file then delete it to trigger the FileNotFoundException
// when closing the file.
fileSys.create(new Path("/test/dfsclose/file-0"));
fileSys.delete(new Path("/test/dfsclose/file-0"), true);
DFSClient dfsClient = fileSys.getClient();
// Construct a new dfsClient to get the same LeaseRenewer instance,
// to avoid the original client being added to the leaseRenewer again.
DFSClient newDfsClient =
new DFSClient(cluster.getFileSystem(0).getUri(), conf);
LeaseRenewer leaseRenewer = newDfsClient.getLeaseRenewer();
dfsClient.closeAllFilesBeingWritten(false);
// Remove new dfsClient in leaseRenewer
leaseRenewer.closeClient(newDfsClient);
// The list of clients corresponding to this renewer should be empty
assertEquals(true, leaseRenewer.isEmpty());
assertEquals(true, dfsClient.isFilesBeingWrittenEmpty());
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
}