/// <exception cref="System.IO.IOException"/>
private bool Truncate(long newLength, StringBuilder b)
{
RandomAccessFile raf = new RandomAccessFile(localFile, "rw");
raf.SetLength(newLength);
raf.Close();
bool isReady = dfs.Truncate(file, newLength);
b.Append(", newLength=").Append(newLength).Append(", isReady=").Append(isReady);
if (!isReady)
{
TestFileTruncate.CheckBlockRecovery(file, dfs, 100, 300L);
}
return(isReady);
}
/// <exception cref="System.Exception"/>
public virtual void Prepare()
{
// original size: 2.5 blocks
DFSTestUtil.CreateFile(this._enclosing.dfs, TestTruncateQuotaUpdate.file, TestTruncateQuotaUpdate
.Blocksize * 2 + TestTruncateQuotaUpdate.Blocksize / 2, TestTruncateQuotaUpdate.
Replication, 0L);
SnapshotTestHelper.CreateSnapshot(this._enclosing.dfs, TestTruncateQuotaUpdate.dir
, "s1");
// truncate to 1.5 block
this._enclosing.dfs.Truncate(TestTruncateQuotaUpdate.file, TestTruncateQuotaUpdate
.Blocksize + TestTruncateQuotaUpdate.Blocksize / 2);
TestFileTruncate.CheckBlockRecovery(TestTruncateQuotaUpdate.file, this._enclosing
.dfs);
// append another 1 BLOCK
DFSTestUtil.AppendFile(this._enclosing.dfs, TestTruncateQuotaUpdate.file, TestTruncateQuotaUpdate
.Blocksize);
}
/// <exception cref="System.IO.IOException"/>
private static void StartRollingUpgrade(Path foo, Path bar, Path file, byte[] data
, MiniDFSCluster cluster)
{
DistributedFileSystem dfs = cluster.GetFileSystem();
//start rolling upgrade
dfs.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeEnter);
dfs.RollingUpgrade(HdfsConstants.RollingUpgradeAction.Prepare);
dfs.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeLeave);
dfs.Mkdirs(bar);
NUnit.Framework.Assert.IsTrue(dfs.Exists(foo));
NUnit.Framework.Assert.IsTrue(dfs.Exists(bar));
//truncate a file
int newLength = DFSUtil.GetRandom().Next(data.Length - 1) + 1;
dfs.Truncate(file, newLength);
TestFileTruncate.CheckBlockRecovery(file, dfs);
AppendTestUtil.CheckFullFile(dfs, file, newLength, data);
}
/// <exception cref="System.Exception"/>
private void TestTruncate(long newLength, long expectedDiff, long expectedUsage)
{
// before doing the real truncation, make sure the computation is correct
INodesInPath iip = fsdir.GetINodesInPath4Write(file.ToString());
INodeFile fileNode = iip.GetLastINode().AsFile();
fileNode.RecordModification(iip.GetLatestSnapshotId(), true);
long diff = fileNode.ComputeQuotaDeltaForTruncate(newLength);
NUnit.Framework.Assert.AreEqual(expectedDiff, diff);
// do the real truncation
dfs.Truncate(file, newLength);
// wait for truncate to finish
TestFileTruncate.CheckBlockRecovery(file, dfs);
INodeDirectory dirNode = fsdir.GetINode4Write(dir.ToString()).AsDirectory();
long spaceUsed = dirNode.GetDirectoryWithQuotaFeature().GetSpaceConsumed().GetStorageSpace
();
long diskUsed = dirNode.GetDirectoryWithQuotaFeature().GetSpaceConsumed().GetTypeSpaces
().Get(StorageType.Disk);
NUnit.Framework.Assert.AreEqual(expectedUsage, spaceUsed);
NUnit.Framework.Assert.AreEqual(expectedUsage, diskUsed);
}
public virtual void TestMultipleAppendsDuringCatchupTailing()
{
Configuration conf = new Configuration();
// Set a length edits tailing period, and explicit rolling, so we can
// control the ingest of edits by the standby for this test.
conf.Set(DFSConfigKeys.DfsHaTaileditsPeriodKey, "5000");
conf.SetInt(DFSConfigKeys.DfsHaLogrollPeriodKey, -1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NnTopology(MiniDFSNNTopology
.SimpleHATopology()).NumDataNodes(3).Build();
FileSystem fs = null;
try
{
cluster.TransitionToActive(0);
fs = HATestUtil.ConfigureFailoverFs(cluster, conf);
Path fileToAppend = new Path("/FileToAppend");
Path fileToTruncate = new Path("/FileToTruncate");
byte[] data = new byte[1 << 16];
DFSUtil.GetRandom().NextBytes(data);
int[] appendPos = AppendTestUtil.RandomFilePartition(data.Length, Count);
int[] truncatePos = AppendTestUtil.RandomFilePartition(data.Length, 1);
// Create file, write some data, and hflush so that the first
// block is in the edit log prior to roll.
FSDataOutputStream @out = CreateAndHflush(fs, fileToAppend, data, appendPos[0]);
FSDataOutputStream out4Truncate = CreateAndHflush(fs, fileToTruncate, data, data.
Length);
// Let the StandbyNode catch the creation of the file.
cluster.GetNameNode(0).GetRpcServer().RollEditLog();
cluster.GetNameNode(1).GetNamesystem().GetEditLogTailer().DoTailEdits();
@out.Close();
out4Truncate.Close();
// Append and re-close a few time, so that many block entries are queued.
for (int i = 0; i < Count; i++)
{
int end = i < Count - 1 ? appendPos[i + 1] : data.Length;
@out = fs.Append(fileToAppend);
@out.Write(data, appendPos[i], end - appendPos[i]);
@out.Close();
}
bool isTruncateReady = fs.Truncate(fileToTruncate, truncatePos[0]);
// Ensure that blocks have been reported to the SBN ahead of the edits
// arriving.
cluster.TriggerBlockReports();
// Failover the current standby to active.
cluster.ShutdownNameNode(0);
cluster.TransitionToActive(1);
// Check the FSCK doesn't detect any bad blocks on the SBN.
int rc = ToolRunner.Run(new DFSck(cluster.GetConfiguration(1)), new string[] { "/"
, "-files", "-blocks" });
NUnit.Framework.Assert.AreEqual(0, rc);
NUnit.Framework.Assert.AreEqual("CorruptBlocks should be empty.", 0, cluster.GetNameNode
(1).GetNamesystem().GetCorruptReplicaBlocks());
AppendTestUtil.CheckFullFile(fs, fileToAppend, data.Length, data, fileToAppend.ToString
());
if (!isTruncateReady)
{
TestFileTruncate.CheckBlockRecovery(fileToTruncate, cluster.GetFileSystem(1));
}
AppendTestUtil.CheckFullFile(fs, fileToTruncate, truncatePos[0], data, fileToTruncate
.ToString());
}
finally
{
if (null != cluster)
{
cluster.Shutdown();
}
if (null != fs)
{
fs.Close();
}
}
}
