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HDFS-3848. A Bug in recoverLeaseInternal method of FSNameSystem class. Contributed by Hooman Peiro Sajjad and Chen He. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1604011 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Kihwal Lee 2014-06-19 19:05:25 +00:00
parent a3908b89f7
commit 0da148dae7
3 changed files with 29 additions and 3 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -670,6 +670,9 @@ Release 2.5.0 - UNRELEASED
HDFS-6563. NameNode cannot save fsimage in certain circumstances when
snapshots are in use. (atm)
HDFS-3848. A Bug in recoverLeaseInternal method of FSNameSystem class
(Hooman Peiro Sajjad and Chen He via kihwal)
BREAKDOWN OF HDFS-2006 SUBTASKS AND RELATED JIRAS
HDFS-6299. Protobuf for XAttr and client-side implementation. (Yi Liu via umamahesh)

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -2584,10 +2584,10 @@ private void recoverLeaseInternal(INodeFile fileInode,
// We found the lease for this file. And surprisingly the original
// holder is trying to recreate this file. This should never occur.
//
if (!force && lease != null) {
Lease leaseFile = leaseManager.getLeaseByPath(src);
if ((leaseFile != null && leaseFile.equals(lease)) ||
lease.getHolder().equals(holder)) {
if (leaseFile != null && leaseFile.equals(lease)) {
throw new AlreadyBeingCreatedException(
"failed to create file " + src + " for " + holder +
" for client " + clientMachine +

25
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLeaseRecovery2.java
View File

@ -153,6 +153,15 @@ public void testImmediateRecoveryOfLease() throws Exception {
verifyFile(dfs, filepath1, actual, size);
}
@Test
public void testLeaseRecoverByAnotherUser() throws Exception {
byte [] actual = new byte[FILE_SIZE];
cluster.setLeasePeriod(SHORT_LEASE_PERIOD, LONG_LEASE_PERIOD);
Path filepath = createFile("/immediateRecoverLease-x", 0, true);
recoverLeaseUsingCreate2(filepath);
verifyFile(dfs, filepath, actual, 0);
}
private Path createFile(final String filestr, final int size,
final boolean triggerLeaseRenewerInterrupt)
throws IOException, InterruptedException {
@ -196,7 +205,7 @@ private FileSystem getFSAsAnotherUser(final Configuration c)
}
private void recoverLeaseUsingCreate(Path filepath)
throws IOException, InterruptedException {
throws IOException, InterruptedException {
FileSystem dfs2 = getFSAsAnotherUser(conf);
for(int i = 0; i < 10; i++) {
AppendTestUtil.LOG.info("i=" + i);
@ -216,6 +225,20 @@ private void recoverLeaseUsingCreate(Path filepath)
fail("recoverLeaseUsingCreate failed");
}
private void recoverLeaseUsingCreate2(Path filepath)
throws Exception {
FileSystem dfs2 = getFSAsAnotherUser(conf);
int size = AppendTestUtil.nextInt(FILE_SIZE);
DistributedFileSystem dfsx = (DistributedFileSystem) dfs2;
//create file using dfsx
Path filepath2 = new Path("/immediateRecoverLease-x2");
FSDataOutputStream stm = dfsx.create(filepath2, true, BUF_SIZE,
REPLICATION_NUM, BLOCK_SIZE);
assertTrue(dfsx.dfs.exists("/immediateRecoverLease-x2"));
try {Thread.sleep(10000);} catch (InterruptedException e) {}
dfsx.append(filepath);
}
private void verifyFile(FileSystem dfs, Path filepath, byte[] actual,
int size) throws IOException {
AppendTestUtil.LOG.info("Lease for file " + filepath + " is recovered. "