Пример #1
0
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
 {
     UninterruptableMonitor.Enter(this);
     try
     {
         while (true)
         {
             MergePolicy.OneMerge merge = writer.NextMerge();
             if (merge == null)
             {
                 break;
             }
             for (int i = 0; i < merge.Segments.Count; i++)
             {
                 if (Debugging.AssertsEnabled)
                 {
                     Debugging.Assert(merge.Segments[i].Info.DocCount < 20);
                 }
             }
             writer.Merge(merge);
         }
     }
     finally
     {
         UninterruptableMonitor.Exit(this);
     }
 }
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
 {
     lock (this)
     {
         if (!MayMerge.Get() && writer.NextMerge() != null)
         {
             throw new InvalidOperationException();
         }
         base.Merge(writer, trigger, newMergesFound);
     }
 }
Пример #3
0
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
 {
     MergePolicy.OneMerge merge = null;
     while ((merge = writer.NextMerge()) != null)
     {
         if (VERBOSE)
         {
             Console.WriteLine("executing merge " + merge.SegString(writer.Directory));
         }
         writer.Merge(merge);
     }
 }
Пример #4
0
 /// <summary>
 /// Just do the merges in sequence. We do this
 /// "synchronized" so that even if the application is using
 /// multiple threads, only one merge may run at a time.
 /// </summary>
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound) // LUCENENET NOTE: This was internal in the original, but the base class is public so there isn't much choice here
 {
     lock (this)
     {
         while (true)
         {
             MergePolicy.OneMerge merge = writer.NextMerge();
             if (merge == null)
             {
                 break;
             }
             writer.Merge(merge);
         }
     }
 }
Пример #5
0
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
 {
     UninterruptableMonitor.Enter(this);
     try
     {
         if (!mayMerge.Value && writer.NextMerge() != null)
         {
             throw AssertionError.Create();
         }
         base.Merge(writer, trigger, newMergesFound);
     }
     finally
     {
         UninterruptableMonitor.Exit(this);
     }
 }
Пример #6
0
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
 {
     lock (this)
     {
         while (true)
         {
             MergePolicy.OneMerge merge = writer.NextMerge();
             if (merge == null)
             {
                 break;
             }
             for (int i = 0; i < merge.Segments.Count; i++)
             {
                 Debug.Assert(merge.Segments[i].Info.DocCount < 20);
             }
             writer.Merge(merge);
         }
     }
 }
Пример #7
0
 public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound) // LUCENENET NOTE: This was internal in the original, but the base class is public so there isn't much choice here
 {
     UninterruptableMonitor.Enter(this);
     try
     {
         while (true)
         {
             MergePolicy.OneMerge merge = writer.NextMerge();
             if (merge is null)
             {
                 break;
             }
             writer.Merge(merge);
         }
     }
     finally
     {
         UninterruptableMonitor.Exit(this);
     }
 }
            public override void Run()
            {
                // First time through the while loop we do the merge
                // that we were started with:
                MergePolicy.OneMerge merge = this.startMerge;

                try
                {
                    if (outerInstance.IsVerbose)
                    {
                        outerInstance.Message("  merge thread: start");
                    }

                    while (true)
                    {
                        RunningMerge = merge;
                        outerInstance.DoMerge(merge);

                        // Subsequent times through the loop we do any new
                        // merge that writer says is necessary:
                        merge = tWriter.NextMerge();

                        // Notify here in case any threads were stalled;
                        // they will notice that the pending merge has
                        // been pulled and possibly resume:
                        lock (outerInstance)
                        {
                            Monitor.PulseAll(outerInstance);
                        }

                        if (merge != null)
                        {
                            outerInstance.UpdateMergeThreads();
                            if (outerInstance.IsVerbose)
                            {
                                outerInstance.Message("  merge thread: do another merge " + tWriter.SegString(merge.Segments));
                            }
                        }
                        else
                        {
                            break;
                        }
                    }

                    if (outerInstance.IsVerbose)
                    {
                        outerInstance.Message("  merge thread: done");
                    }
                }
                catch (Exception exc)
                {
                    // Ignore the exception if it was due to abort:
                    if (!(exc is MergePolicy.MergeAbortedException))
                    {
                        //System.out.println(Thread.currentThread().getName() + ": CMS: exc");
                        //exc.printStackTrace(System.out);
                        if (!outerInstance.suppressExceptions)
                        {
                            // suppressExceptions is normally only set during
                            // testing.
                            outerInstance.HandleMergeException(exc);
                        }
                    }
                }
                finally
                {
                    done = true;
                    lock (outerInstance)
                    {
                        outerInstance.UpdateMergeThreads();
                        Monitor.PulseAll(outerInstance);
                    }
                }
            }
        public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
        {
            lock (this)
            {
                //Debug.Assert(!Thread.holdsLock(writer));

                this.m_writer = writer;

                InitMergeThreadPriority();

                m_dir = writer.Directory;

                // First, quickly run through the newly proposed merges
                // and add any orthogonal merges (ie a merge not
                // involving segments already pending to be merged) to
                // the queue.  If we are way behind on merging, many of
                // these newly proposed merges will likely already be
                // registered.

                if (IsVerbose)
                {
                    Message("now merge");
                    Message("  index: " + writer.SegString());
                }

                // Iterate, pulling from the IndexWriter's queue of
                // pending merges, until it's empty:
                while (true)
                {
                    long startStallTime = 0;
                    while (writer.HasPendingMerges() && MergeThreadCount >= maxMergeCount)
                    {
                        // this means merging has fallen too far behind: we
                        // have already created maxMergeCount threads, and
                        // now there's at least one more merge pending.
                        // Note that only maxThreadCount of
                        // those created merge threads will actually be
                        // running; the rest will be paused (see
                        // updateMergeThreads).  We stall this producer
                        // thread to prevent creation of new segments,
                        // until merging has caught up:
                        startStallTime = Environment.TickCount;
                        if (IsVerbose)
                        {
                            Message("    too many merges; stalling...");
                        }
                        //try
                        //{
                        Monitor.Wait(this);
                        //}
                        //catch (ThreadInterruptedException ie) // LUCENENET NOTE: Senseless to catch and rethrow the same exception type
                        //{
                        //    throw new ThreadInterruptedException(ie.ToString(), ie);
                        //}
                    }

                    if (IsVerbose)
                    {
                        if (startStallTime != 0)
                        {
                            Message("  stalled for " + (Environment.TickCount - startStallTime) + " msec");
                        }
                    }

                    MergePolicy.OneMerge merge = writer.NextMerge();
                    if (merge == null)
                    {
                        if (IsVerbose)
                        {
                            Message("  no more merges pending; now return");
                        }
                        return;
                    }

                    bool success = false;
                    try
                    {
                        if (IsVerbose)
                        {
                            Message("  consider merge " + writer.SegString(merge.Segments));
                        }

                        // OK to spawn a new merge thread to handle this
                        // merge:
                        MergeThread merger = GetMergeThread(writer, merge);
                        m_mergeThreads.Add(merger);
                        if (IsVerbose)
                        {
                            Message("    launch new thread [" + merger.Name + "]");
                        }

                        merger.Start();

                        // Must call this after starting the thread else
                        // the new thread is removed from mergeThreads
                        // (since it's not alive yet):
                        UpdateMergeThreads();

                        success = true;
                    }
                    finally
                    {
                        if (!success)
                        {
                            writer.MergeFinish(merge);
                        }
                    }
                }
            }
        }
Пример #10
0
            private void Run(CancellationToken cancellationToken)
            {
                // First time through the while loop we do the merge
                // that we were started with:
                MergePolicy.OneMerge merge = _startingMerge;

                try
                {
                    if (_isLoggingEnabled)
                    {
                        _logger.Message(COMPONENT_NAME, "  merge thread: start");
                    }

                    while (true && !cancellationToken.IsCancellationRequested)
                    {
                        RunningMerge = merge;
                        _writer.Merge(merge);

                        // Subsequent times through the loop we do any new
                        // merge that writer says is necessary:
                        merge = _writer.NextMerge();

                        // Notify here in case any threads were stalled;
                        // they will notice that the pending merge has
                        // been pulled and possibly resume:
                        _resetEvent.Set();

                        if (merge != null)
                        {
                            if (_isLoggingEnabled)
                            {
                                _logger.Message(COMPONENT_NAME, "  merge thread: do another merge " + _writer.SegString(merge.Segments));
                            }
                        }
                        else
                        {
                            break;
                        }
                    }

                    if (_isLoggingEnabled)
                    {
                        _logger.Message(COMPONENT_NAME, "  merge thread: done");
                    }
                }
                catch (Exception exc)
                {
                    // Ignore the exception if it was due to abort:
                    if (!(exc is MergePolicy.MergeAbortedException))
                    {
                        //System.out.println(Thread.currentThread().getName() + ": CMS: exc");
                        //exc.printStackTrace(System.out)
                        _exceptionHandler(exc);
                    }
                }
                finally
                {
                    _isDone = true;

                    if (MergeThreadCompleted != null)
                    {
                        MergeThreadCompleted(this, EventArgs.Empty);
                    }
                }
            }
Пример #11
0
        public override void Merge(IndexWriter writer, MergeTrigger trigger, bool newMergesFound)
        {
            using (_lock.Write())
            {
                _writer    = writer;
                _directory = writer.Directory;

                if (Verbose)
                {
                    Message("now merge");
                    Message("  index: " + writer.SegString());
                }

                // First, quickly run through the newly proposed merges
                // and add any orthogonal merges (ie a merge not
                // involving segments already pending to be merged) to
                // the queue.  If we are way behind on merging, many of
                // these newly proposed merges will likely already be
                // registered.

                // Iterate, pulling from the IndexWriter's queue of
                // pending merges, until it's empty:
                while (true)
                {
                    long startStallTime = 0;
                    while (writer.HasPendingMerges() && MergeThreadCount >= MaxMergeCount)
                    {
                        // this means merging has fallen too far behind: we
                        // have already created maxMergeCount threads, and
                        // now there's at least one more merge pending.
                        // Note that only maxThreadCount of
                        // those created merge threads will actually be
                        // running; the rest will be paused (see
                        // updateMergeThreads).  We stall this producer
                        // thread to prevent creation of new segments,
                        // until merging has caught up:
                        startStallTime = Environment.TickCount;
                        if (Verbose)
                        {
                            Message("    too many merges; stalling...");
                        }

                        _manualResetEvent.Reset();
                        _manualResetEvent.Wait();
                    }

                    if (Verbose)
                    {
                        if (startStallTime != 0)
                        {
                            Message("  stalled for " + (Environment.TickCount - startStallTime) + " msec");
                        }
                    }

                    MergePolicy.OneMerge merge = writer.NextMerge();
                    if (merge == null)
                    {
                        if (Verbose)
                        {
                            Message("  no more merges pending; now return");
                        }
                        return;
                    }

                    bool success = false;
                    try
                    {
                        if (Verbose)
                        {
                            Message("  consider merge " + writer.SegString(merge.Segments));
                        }

                        // OK to spawn a new merge thread to handle this
                        // merge:
                        var merger = CreateTask(writer, merge);

                        merger.MergeThreadCompleted += OnMergeThreadCompleted;

                        _mergeThreads.Add(merger);

                        if (Verbose)
                        {
                            Message("    launch new thread [" + merger.Name + "]");
                        }

                        merger.Start(_taskScheduler);

                        // Must call this after starting the thread else
                        // the new thread is removed from mergeThreads
                        // (since it's not alive yet):
                        UpdateMergeThreads();

                        success = true;
                    }
                    finally
                    {
                        if (!success)
                        {
                            writer.MergeFinish(merge);
                        }
                    }
                }
            }
        }