В соответствии с этим или this, я использовал один и тот же indexsearcher несколькими нить. Но когда я переключился с FsDirectory на MMapDirectory, у меня появились интересные исключения.
Эта работа прекрасна:
static void Main(string[] args)
{
DirectoryInfo directoryInfo = new DirectoryInfo(@"C:\Users\Tams\Desktop\new\");
var directory = FSDirectory.Open(directoryInfo);
var indexSearcher = new IndexSearcher(directory);
const int times = 100;
const int concurrentTaskCount = 5;
var task = new Task[concurrentTaskCount];
for (int i = 0; i < concurrentTaskCount; i++)
{
task[i] = new Task(() => Search(indexSearcher, times));
task[i].Start();
}
Task.WaitAll(task);
}
static void Search(IndexSearcher reader, int times)
{
List<Document> docs = new List<Document>(10000);
for (int i = 0; i < times; i++)
{
var q = new TermQuery(new Term("title", "volume"));
foreach (var scoreDoc in reader.Search(q, 100).ScoreDocs)
{
docs.Add(reader.Doc(scoreDoc.Doc));
}
}
}
Но с этим:
static void Main(string[] args)
{
DirectoryInfo directoryInfo = new DirectoryInfo(@"C:\Users\Tams\Desktop\new\");
var directory = new MMapDirectory(directoryInfo); // CHANGED
var indexSearcher = new IndexSearcher(directory);
const int times = 100;
const int concurrentTaskCount = 5;
var task = new Task[concurrentTaskCount];
for (int i = 0; i < concurrentTaskCount; i++)
{
task[i] = new Task(() => Search(indexSearcher, times));
task[i].Start();
}
Task.WaitAll(task);
}
static void Search(IndexSearcher reader, int times)
{
List<Document> docs = new List<Document>(10000);
for (int i = 0; i < times; i++)
{
var q = new TermQuery(new Term("title", "volume"));
foreach (var scoreDoc in reader.Search(q, 100).ScoreDocs)
{
docs.Add(reader.Doc(scoreDoc.Doc));
}
}
}
Я получаю различные исключения, например:
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative
and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeException()
at System.Collections.Generic.List`1.get_Item(Int32 index)
at Lucene.Net.Index.FieldInfos.FieldInfo(Int32 fieldNumber)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\FieldInfos.cs:line 378
at Lucene.Net.Index.FieldsReader.Doc(Int32 n, FieldSelector fieldSelector)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\FieldsReader.cs:line 234
at Lucene.Net.Index.SegmentReader.Document(Int32 n, FieldSelector fieldSelector)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\SegmentReader.cs:line 1193
at Lucene.Net.Index.DirectoryReader.Document(Int32 n, FieldSelector fieldSelector)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\DirectoryReader.cs:line 686
at Lucene.Net.Index.IndexReader.Document(Int32 n)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\IndexReader.cs:line 732
at Lucene.Net.Search.IndexSearcher.Doc(Int32 i)
in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 162
at PerformanceTest.Program.Search(IndexSearcher reader, Int32 times)
in c:\Users\Tams\Documents\Visual Studio 2012\Projects\BookCatalog\PerformanceTest\Program.cs:line 28
at PerformanceTest.Program.<>c__DisplayClass2.<Main>b__0()
in c:\Users\Tams\Documents\Visual Studio 2012\Projects\BookCatalog\PerformanceTest\Program.cs:line 43
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
или
System.IO.IOException: read past EOF
at Lucene.Net.Store.BufferedIndexInput.Refill()
in d:\Lucene.Net\FullRepo\trunk\src\core\Store\BufferedIndexInput.cs:line 179
at Lucene.Net.Store.BufferedIndexInput.ReadByte()
in d:\Lucene.Net\FullRepo\trunk\src\core\Store\BufferedIndexInput.cs:line 41
at Lucene.Net.Store.IndexInput.ReadVInt()
in d:\Lucene.Net\FullRepo\trunk\src\core\Store\IndexInput.cs:line 88
at Lucene.Net.Index.FieldsReader.Doc(Int32 n, FieldSelector fieldSelector)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\FieldsReader.cs:line 230
at Lucene.Net.Index.SegmentReader.Document(Int32 n, FieldSelector fieldSelector)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\SegmentReader.cs:line 1193
at Lucene.Net.Index.DirectoryReader.Document(Int32 n, FieldSelector fieldSelector)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\DirectoryReader.cs:line 686
at Lucene.Net.Index.IndexReader.Document(Int32 n)
in d:\Lucene.Net\FullRepo\trunk\src\core\Index\IndexReader.cs:line 732
at Lucene.Net.Search.IndexSearcher.Doc(Int32 i)
in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 162
at PerformanceTest.Program.Search(IndexSearcher reader, Int32 times)
in c:\Users\Tams\Documents\Visual Studio 2012\Projects\BookCatalog\PerformanceTest\Program.cs:line 28
at PerformanceTest.Program.<>c__DisplayClass2.<Main>b__0()
in c:\Users\Tams\Documents\Visual Studio 2012\Projects\BookCatalog\PerformanceTest\Program.cs:line 43
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
Последний код работает отлично, с установкой переменной concurrentTaskCount в 1.
Я что-то упустил? Я не могу понять, что это такое.
На самом деле, у меня нет пути
d:\Lucene.Net\FullRepo\ствол\SRC\ядро \ Store\BufferedIndexInput.cs
У меня даже нет диска с буквой "d"