public void ShouldSkipEmptySpaceAtEndOfPage()
{
TestUtils.DeleteDirectory(TestUtils.MethodTestDir, wait: true);
var vlLength = new VLValue();
var log = Devices.CreateLogDevice(TestUtils.MethodTestDir + "/hlog-vl-iter.log", deleteOnClose: true);
var fht = new FasterKV <Key, VLValue>
(128,
new LogSettings {
LogDevice = log, MemorySizeBits = 17, PageSizeBits = 10
}, // 1KB page
null, null, null, new VariableLengthStructSettings <Key, VLValue> {
valueLength = vlLength
}
);
var session = fht.NewSession(new VLFunctions());
try
{
Set(1L, 200, 1); // page#0
Set(2L, 200, 2); // page#1 because there is not enough space in page#0
var len = 1024; // fill page#1 exactly
len = len - 2 * RecordInfo.GetLength() - 2 * 8 - vlLength.GetLength(ref GetValue(200, 2));
Set(3, len / 4, 3); // should be in page#1
Set(4, 64, 4);
session.CompletePending(true);
var data = new List <Tuple <long, int, int> >();
using (var iterator = fht.Log.Scan(fht.Log.BeginAddress, fht.Log.TailAddress))
{
while (iterator.GetNext(out var info))
{
ref var scanKey = ref iterator.GetKey();
ref var scanValue = ref iterator.GetValue();
data.Add(Tuple.Create(scanKey.key, scanValue.length, scanValue.field1));
}
}
