| public NumDeletedDocs ( SegmentInfo info ) : int | ||
| info | SegmentInfo | |
| return | int | |
/// <summary>
/// Returns true if this single info is already fully merged (has no
/// pending deletes, is in the same dir as the
/// writer, and matches the current compound file setting
/// </summary>
protected internal bool IsMerged(SegmentInfos infos, SegmentCommitInfo info)
{
IndexWriter w = Writer.Get();
Debug.Assert(w != null);
bool hasDeletions = w.NumDeletedDocs(info) > 0;
return(!hasDeletions && !info.Info.HasSeparateNorms() && info.Info.Dir == w.Directory && UseCompoundFile(infos, info) == info.Info.UseCompoundFile);
}
/// <summary>
/// Returns <c>true</c> if this single info is already fully merged (has no
/// pending deletes, is in the same dir as the
/// writer, and matches the current compound file setting
/// </summary>
protected bool IsMerged(SegmentInfos infos, SegmentCommitInfo info)
{
IndexWriter w = m_writer.Get();
Debug.Assert(w != null);
bool hasDeletions = w.NumDeletedDocs(info) > 0;
return(!hasDeletions
#pragma warning disable 612, 618
&& !info.Info.HasSeparateNorms
#pragma warning restore 612, 618
&& info.Info.Dir == w.Directory &&
UseCompoundFile(infos, info) == info.Info.UseCompoundFile);
}
/// <summary>
/// Finds merges necessary to force-merge all deletes from the
/// index. We simply merge adjacent segments that have
/// deletes, up to mergeFactor at a time.
/// </summary>
public override MergeSpecification FindForcedDeletesMerges(SegmentInfos segmentInfos)
{
var segments = segmentInfos.AsList();
int numSegments = segments.Count;
if (IsVerbose)
{
Message("findForcedDeleteMerges: " + numSegments + " segments");
}
var spec = new MergeSpecification();
int firstSegmentWithDeletions = -1;
IndexWriter w = m_writer.Get();
Debug.Assert(w != null);
for (int i = 0; i < numSegments; i++)
{
SegmentCommitInfo info = segmentInfos.Info(i);
int delCount = w.NumDeletedDocs(info);
if (delCount > 0)
{
if (IsVerbose)
{
Message(" segment " + info.Info.Name + " has deletions");
}
if (firstSegmentWithDeletions == -1)
{
firstSegmentWithDeletions = i;
}
else if (i - firstSegmentWithDeletions == m_mergeFactor)
{
// We've seen mergeFactor segments in a row with
// deletions, so force a merge now:
if (IsVerbose)
{
Message(" add merge " + firstSegmentWithDeletions + " to " + (i - 1) + " inclusive");
}
spec.Add(new OneMerge(segments.SubList(firstSegmentWithDeletions, i)));
firstSegmentWithDeletions = i;
}
}
else if (firstSegmentWithDeletions != -1)
{
// End of a sequence of segments with deletions, so,
// merge those past segments even if it's fewer than
// mergeFactor segments
if (IsVerbose)
{
Message(" add merge " + firstSegmentWithDeletions + " to " + (i - 1) + " inclusive");
}
spec.Add(new OneMerge(segments.SubList(firstSegmentWithDeletions, i)));
firstSegmentWithDeletions = -1;
}
}
if (firstSegmentWithDeletions != -1)
{
if (IsVerbose)
{
Message(" add merge " + firstSegmentWithDeletions + " to " + (numSegments - 1) + " inclusive");
}
spec.Add(new OneMerge(segments.SubList(firstSegmentWithDeletions, numSegments)));
}
return(spec);
}
