public virtual void TestQuotaUpdatedWhenBlockAbandoned()
{
// Setting diskspace quota to 3MB
fs.SetQuota(new Path("/"), HdfsConstants.QuotaDontSet, 3 * 1024 * 1024);
// Start writing a file with 2 replicas to ensure each datanode has one.
// Block Size is 1MB.
string src = FileNamePrefix + "test_quota1";
FSDataOutputStream fout = fs.Create(new Path(src), true, 4096, (short)2, 1024 * 1024
);
for (int i = 0; i < 1024; i++)
{
fout.WriteByte(123);
}
// Shutdown one datanode, causing the block abandonment.
cluster.GetDataNodes()[0].Shutdown();
// Close the file, new block will be allocated with 2MB pending size.
try
{
fout.Close();
}
catch (QuotaExceededException)
{
NUnit.Framework.Assert.Fail("Unexpected quota exception when closing fout");
}
}
/// <summary>
/// Create a file with the name <code>file</code> and
/// a length of <code>fileSize</code>.
/// </summary>
/// <remarks>
/// Create a file with the name <code>file</code> and
/// a length of <code>fileSize</code>. The file is filled with character 'a'.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
private void GenFile(Path file, long fileSize)
{
FSDataOutputStream @out = fc.Create(file, EnumSet.Of(CreateFlag.Create, CreateFlag
.Overwrite), Options.CreateOpts.CreateParent(), Options.CreateOpts.BufferSize(4096
), Options.CreateOpts.RepFac((short)3));
for (long i = 0; i < fileSize; i++)
{
@out.WriteByte('a');
}
@out.Close();
}