diff --git a/dev-tools/idea/lucene/contrib/ant/ant.iml b/dev-tools/idea/lucene/contrib/ant/ant.iml index 6e678eb887b..8987c57a65f 100644 --- a/dev-tools/idea/lucene/contrib/ant/ant.iml +++ b/dev-tools/idea/lucene/contrib/ant/ant.iml @@ -6,6 +6,7 @@ + diff --git a/dev-tools/idea/lucene/contrib/queryparser/queryparser.iml b/dev-tools/idea/lucene/contrib/queryparser/queryparser.iml index a565d107ca7..49139191784 100644 --- a/dev-tools/idea/lucene/contrib/queryparser/queryparser.iml +++ b/dev-tools/idea/lucene/contrib/queryparser/queryparser.iml @@ -6,6 +6,7 @@ + diff --git a/dev-tools/idea/lucene/lucene.iml b/dev-tools/idea/lucene/lucene.iml index bddb309e6c8..e16ece78925 100644 --- a/dev-tools/idea/lucene/lucene.iml +++ b/dev-tools/idea/lucene/lucene.iml @@ -6,6 +6,7 @@ + diff --git a/dev-tools/idea/modules/analysis/common/common.iml b/dev-tools/idea/modules/analysis/common/common.iml index 739f4de8ba1..4882b813b62 100644 --- a/dev-tools/idea/modules/analysis/common/common.iml +++ b/dev-tools/idea/modules/analysis/common/common.iml @@ -7,6 +7,7 @@ + diff --git a/dev-tools/idea/solr/solr.iml b/dev-tools/idea/solr/solr.iml index 7b9481700ea..6d1951d9a7d 100644 --- a/dev-tools/idea/solr/solr.iml +++ b/dev-tools/idea/solr/solr.iml @@ -10,7 +10,6 @@ - diff --git a/lucene/src/java/org/apache/lucene/index/DocFieldConsumer.java b/lucene/src/java/org/apache/lucene/index/DocFieldConsumer.java index 4542fd5c03c..18555300003 100644 --- a/lucene/src/java/org/apache/lucene/index/DocFieldConsumer.java +++ b/lucene/src/java/org/apache/lucene/index/DocFieldConsumer.java @@ -21,14 +21,14 @@ import java.io.IOException; import java.util.Map; abstract class DocFieldConsumer { - /** Called when DocumentsWriter decides to create a new + /** Called when DocumentsWriterPerThread decides to create a new * segment */ abstract void flush(Map fieldsToFlush, SegmentWriteState state) throws IOException; /** Called when an aborting exception is hit */ abstract void abort(); - /** Called when DocumentsWriter is using too much RAM. + /** Called when DocumentsWriterPerThread is using too much RAM. * The consumer should free RAM, if possible, returning * true if any RAM was in fact freed. */ abstract boolean freeRAM(); diff --git a/lucene/src/java/org/apache/lucene/index/DocInverterPerField.java b/lucene/src/java/org/apache/lucene/index/DocInverterPerField.java index 6b4d14d5231..2463326295c 100644 --- a/lucene/src/java/org/apache/lucene/index/DocInverterPerField.java +++ b/lucene/src/java/org/apache/lucene/index/DocInverterPerField.java @@ -200,6 +200,6 @@ final class DocInverterPerField extends DocFieldConsumerPerField { @Override FieldInfo getFieldInfo() { - return this.fieldInfo; + return fieldInfo; } } diff --git a/lucene/src/java/org/apache/lucene/index/SegmentInfo.java b/lucene/src/java/org/apache/lucene/index/SegmentInfo.java index 2ab1ea6f5a0..425368837ab 100644 --- a/lucene/src/java/org/apache/lucene/index/SegmentInfo.java +++ b/lucene/src/java/org/apache/lucene/index/SegmentInfo.java @@ -73,11 +73,11 @@ public final class SegmentInfo { private volatile long sizeInBytesNoStore = -1; // total byte size of all but the store files (computed on demand) private volatile long sizeInBytesWithStore = -1; // total byte size of all of our files (computed on demand) - @Deprecated private int docStoreOffset; // if this segment shares stored fields & vectors, this + private int docStoreOffset; // if this segment shares stored fields & vectors, this // offset is where in that file this segment's docs begin - @Deprecated private String docStoreSegment; // name used to derive fields/vectors file we share with + private String docStoreSegment; // name used to derive fields/vectors file we share with // other segments - @Deprecated private boolean docStoreIsCompoundFile; // whether doc store files are stored in compound file (*.cfx) + private boolean docStoreIsCompoundFile; // whether doc store files are stored in compound file (*.cfx) private int delCount; // How many deleted docs in this segment @@ -467,23 +467,19 @@ public final class SegmentInfo { assert delCount <= docCount; } - @Deprecated public int getDocStoreOffset() { return docStoreOffset; } - @Deprecated public boolean getDocStoreIsCompoundFile() { return docStoreIsCompoundFile; } - @Deprecated public void setDocStoreIsCompoundFile(boolean docStoreIsCompoundFile) { this.docStoreIsCompoundFile = docStoreIsCompoundFile; clearFilesCache(); } - @Deprecated void setDocStore(int offset, String segment, boolean isCompoundFile) { docStoreOffset = offset; docStoreSegment = segment; @@ -491,18 +487,15 @@ public final class SegmentInfo { clearFilesCache(); } - @Deprecated public String getDocStoreSegment() { return docStoreSegment; } - @Deprecated void setDocStoreOffset(int offset) { docStoreOffset = offset; clearFilesCache(); } - @Deprecated public void setDocStoreSegment(String docStoreSegment) { this.docStoreSegment = docStoreSegment; } @@ -516,14 +509,12 @@ public final class SegmentInfo { output.writeString(name); output.writeInt(docCount); output.writeLong(delGen); - output.writeInt(docStoreOffset); if (docStoreOffset != -1) { output.writeString(docStoreSegment); output.writeByte((byte) (docStoreIsCompoundFile ? 1:0)); } - if (normGen == null) { output.writeInt(NO); } else { diff --git a/lucene/src/test-framework/org/apache/lucene/search/QueryUtils.java b/lucene/src/test-framework/org/apache/lucene/search/QueryUtils.java index fa328a8aeb2..8969110b301 100644 --- a/lucene/src/test-framework/org/apache/lucene/search/QueryUtils.java +++ b/lucene/src/test-framework/org/apache/lucene/search/QueryUtils.java @@ -19,6 +19,7 @@ import org.apache.lucene.store.MockDirectoryWrapper; import org.apache.lucene.store.RAMDirectory; import org.apache.lucene.util.LuceneTestCase; import org.apache.lucene.util.ReaderUtil; +import org.apache.lucene.util._TestUtil; import static org.apache.lucene.util.LuceneTestCase.TEST_VERSION_CURRENT; @@ -172,16 +173,7 @@ public class QueryUtils { } w.commit(); w.deleteDocuments( new MatchAllDocsQuery() ); - try { - // Carefully invoke what is a package-private (test - // only, internal) method on IndexWriter: - Method m = IndexWriter.class.getDeclaredMethod("keepFullyDeletedSegments"); - m.setAccessible(true); - m.invoke(w); - } catch (Exception e) { - // Should not happen? - throw new RuntimeException(e); - } + _TestUtil.keepFullyDeletedSegments(w); w.commit(); if (0 < numDeletedDocs) diff --git a/lucene/src/test-framework/org/apache/lucene/util/LuceneTestCase.java b/lucene/src/test-framework/org/apache/lucene/util/LuceneTestCase.java index 02274fce82d..66f7e90ab22 100644 --- a/lucene/src/test-framework/org/apache/lucene/util/LuceneTestCase.java +++ b/lucene/src/test-framework/org/apache/lucene/util/LuceneTestCase.java @@ -726,7 +726,7 @@ public abstract class LuceneTestCase extends Assert { } /** - * Convinience method for logging an iterator. + * Convenience method for logging an iterator. * * @param label String logged before/after the items in the iterator * @param iter Each next() is toString()ed and logged on it's own line. If iter is null this is logged differnetly then an empty iterator. @@ -746,7 +746,7 @@ public abstract class LuceneTestCase extends Assert { } /** - * Convinience method for logging an array. Wraps the array in an iterator and delegates + * Convenience method for logging an array. Wraps the array in an iterator and delegates * * @see #dumpIterator(String,Iterator,PrintStream) */ @@ -760,7 +760,8 @@ public abstract class LuceneTestCase extends Assert { public static IndexWriterConfig newIndexWriterConfig(Version v, Analyzer a) { return newIndexWriterConfig(random, v, a); } - + + /** create a new index writer config with random defaults using the specified random */ public static IndexWriterConfig newIndexWriterConfig(Random r, Version v, Analyzer a) { IndexWriterConfig c = new IndexWriterConfig(v, a); if (r.nextBoolean()) { @@ -936,14 +937,12 @@ public abstract class LuceneTestCase extends Assert { stores.put(dir, Thread.currentThread().getStackTrace()); return dir; } - /** Returns a new field instance. * See {@link #newField(String, String, Field.Store, Field.Index, Field.TermVector)} for more information */ public static Field newField(String name, String value, Index index) { return newField(random, name, value, index); } - /** Returns a new field instance. * See {@link #newField(String, String, Field.Store, Field.Index, Field.TermVector)} for more information */ @@ -963,21 +962,18 @@ public abstract class LuceneTestCase extends Assert { public static Field newField(String name, String value, Store store, Index index, TermVector tv) { return newField(random, name, value, store, index, tv); } - /** Returns a new field instance, using the specified random. * See {@link #newField(String, String, Field.Store, Field.Index, Field.TermVector)} for more information */ public static Field newField(Random random, String name, String value, Index index) { return newField(random, name, value, Store.NO, index); } - /** Returns a new field instance, using the specified random. * See {@link #newField(String, String, Field.Store, Field.Index, Field.TermVector)} for more information */ public static Field newField(Random random, String name, String value, Store store, Index index) { return newField(random, name, value, store, index, TermVector.NO); } - /** Returns a new field instance, using the specified random. * See {@link #newField(String, String, Field.Store, Field.Index, Field.TermVector)} for more information */ @@ -1318,7 +1314,7 @@ public abstract class LuceneTestCase extends Assert { } @Override - public String toString() { + public synchronized String toString() { return "RandomCodecProvider: " + previousMappings.toString(); } } diff --git a/lucene/src/test-framework/org/apache/lucene/util/_TestUtil.java b/lucene/src/test-framework/org/apache/lucene/util/_TestUtil.java index f02d6f9ec3e..51d80b001b4 100644 --- a/lucene/src/test-framework/org/apache/lucene/util/_TestUtil.java +++ b/lucene/src/test-framework/org/apache/lucene/util/_TestUtil.java @@ -221,54 +221,54 @@ public class _TestUtil { } private static final int[] blockStarts = { - 0x0000, 0x0080, 0x0100, 0x0180, 0x0250, 0x02B0, 0x0300, 0x0370, 0x0400, - 0x0500, 0x0530, 0x0590, 0x0600, 0x0700, 0x0750, 0x0780, 0x07C0, 0x0800, - 0x0900, 0x0980, 0x0A00, 0x0A80, 0x0B00, 0x0B80, 0x0C00, 0x0C80, 0x0D00, - 0x0D80, 0x0E00, 0x0E80, 0x0F00, 0x1000, 0x10A0, 0x1100, 0x1200, 0x1380, - 0x13A0, 0x1400, 0x1680, 0x16A0, 0x1700, 0x1720, 0x1740, 0x1760, 0x1780, - 0x1800, 0x18B0, 0x1900, 0x1950, 0x1980, 0x19E0, 0x1A00, 0x1A20, 0x1B00, - 0x1B80, 0x1C00, 0x1C50, 0x1CD0, 0x1D00, 0x1D80, 0x1DC0, 0x1E00, 0x1F00, - 0x2000, 0x2070, 0x20A0, 0x20D0, 0x2100, 0x2150, 0x2190, 0x2200, 0x2300, - 0x2400, 0x2440, 0x2460, 0x2500, 0x2580, 0x25A0, 0x2600, 0x2700, 0x27C0, - 0x27F0, 0x2800, 0x2900, 0x2980, 0x2A00, 0x2B00, 0x2C00, 0x2C60, 0x2C80, - 0x2D00, 0x2D30, 0x2D80, 0x2DE0, 0x2E00, 0x2E80, 0x2F00, 0x2FF0, 0x3000, - 0x3040, 0x30A0, 0x3100, 0x3130, 0x3190, 0x31A0, 0x31C0, 0x31F0, 0x3200, - 0x3300, 0x3400, 0x4DC0, 0x4E00, 0xA000, 0xA490, 0xA4D0, 0xA500, 0xA640, - 0xA6A0, 0xA700, 0xA720, 0xA800, 0xA830, 0xA840, 0xA880, 0xA8E0, 0xA900, - 0xA930, 0xA960, 0xA980, 0xAA00, 0xAA60, 0xAA80, 0xABC0, 0xAC00, 0xD7B0, - 0xE000, 0xF900, 0xFB00, 0xFB50, 0xFE00, 0xFE10, - 0xFE20, 0xFE30, 0xFE50, 0xFE70, 0xFF00, 0xFFF0, - 0x10000, 0x10080, 0x10100, 0x10140, 0x10190, 0x101D0, 0x10280, 0x102A0, - 0x10300, 0x10330, 0x10380, 0x103A0, 0x10400, 0x10450, 0x10480, 0x10800, - 0x10840, 0x10900, 0x10920, 0x10A00, 0x10A60, 0x10B00, 0x10B40, 0x10B60, - 0x10C00, 0x10E60, 0x11080, 0x12000, 0x12400, 0x13000, 0x1D000, 0x1D100, - 0x1D200, 0x1D300, 0x1D360, 0x1D400, 0x1F000, 0x1F030, 0x1F100, 0x1F200, + 0x0000, 0x0080, 0x0100, 0x0180, 0x0250, 0x02B0, 0x0300, 0x0370, 0x0400, + 0x0500, 0x0530, 0x0590, 0x0600, 0x0700, 0x0750, 0x0780, 0x07C0, 0x0800, + 0x0900, 0x0980, 0x0A00, 0x0A80, 0x0B00, 0x0B80, 0x0C00, 0x0C80, 0x0D00, + 0x0D80, 0x0E00, 0x0E80, 0x0F00, 0x1000, 0x10A0, 0x1100, 0x1200, 0x1380, + 0x13A0, 0x1400, 0x1680, 0x16A0, 0x1700, 0x1720, 0x1740, 0x1760, 0x1780, + 0x1800, 0x18B0, 0x1900, 0x1950, 0x1980, 0x19E0, 0x1A00, 0x1A20, 0x1B00, + 0x1B80, 0x1C00, 0x1C50, 0x1CD0, 0x1D00, 0x1D80, 0x1DC0, 0x1E00, 0x1F00, + 0x2000, 0x2070, 0x20A0, 0x20D0, 0x2100, 0x2150, 0x2190, 0x2200, 0x2300, + 0x2400, 0x2440, 0x2460, 0x2500, 0x2580, 0x25A0, 0x2600, 0x2700, 0x27C0, + 0x27F0, 0x2800, 0x2900, 0x2980, 0x2A00, 0x2B00, 0x2C00, 0x2C60, 0x2C80, + 0x2D00, 0x2D30, 0x2D80, 0x2DE0, 0x2E00, 0x2E80, 0x2F00, 0x2FF0, 0x3000, + 0x3040, 0x30A0, 0x3100, 0x3130, 0x3190, 0x31A0, 0x31C0, 0x31F0, 0x3200, + 0x3300, 0x3400, 0x4DC0, 0x4E00, 0xA000, 0xA490, 0xA4D0, 0xA500, 0xA640, + 0xA6A0, 0xA700, 0xA720, 0xA800, 0xA830, 0xA840, 0xA880, 0xA8E0, 0xA900, + 0xA930, 0xA960, 0xA980, 0xAA00, 0xAA60, 0xAA80, 0xABC0, 0xAC00, 0xD7B0, + 0xE000, 0xF900, 0xFB00, 0xFB50, 0xFE00, 0xFE10, + 0xFE20, 0xFE30, 0xFE50, 0xFE70, 0xFF00, 0xFFF0, + 0x10000, 0x10080, 0x10100, 0x10140, 0x10190, 0x101D0, 0x10280, 0x102A0, + 0x10300, 0x10330, 0x10380, 0x103A0, 0x10400, 0x10450, 0x10480, 0x10800, + 0x10840, 0x10900, 0x10920, 0x10A00, 0x10A60, 0x10B00, 0x10B40, 0x10B60, + 0x10C00, 0x10E60, 0x11080, 0x12000, 0x12400, 0x13000, 0x1D000, 0x1D100, + 0x1D200, 0x1D300, 0x1D360, 0x1D400, 0x1F000, 0x1F030, 0x1F100, 0x1F200, 0x20000, 0x2A700, 0x2F800, 0xE0000, 0xE0100, 0xF0000, 0x100000 }; private static final int[] blockEnds = { - 0x007F, 0x00FF, 0x017F, 0x024F, 0x02AF, 0x02FF, 0x036F, 0x03FF, 0x04FF, - 0x052F, 0x058F, 0x05FF, 0x06FF, 0x074F, 0x077F, 0x07BF, 0x07FF, 0x083F, - 0x097F, 0x09FF, 0x0A7F, 0x0AFF, 0x0B7F, 0x0BFF, 0x0C7F, 0x0CFF, 0x0D7F, - 0x0DFF, 0x0E7F, 0x0EFF, 0x0FFF, 0x109F, 0x10FF, 0x11FF, 0x137F, 0x139F, - 0x13FF, 0x167F, 0x169F, 0x16FF, 0x171F, 0x173F, 0x175F, 0x177F, 0x17FF, - 0x18AF, 0x18FF, 0x194F, 0x197F, 0x19DF, 0x19FF, 0x1A1F, 0x1AAF, 0x1B7F, - 0x1BBF, 0x1C4F, 0x1C7F, 0x1CFF, 0x1D7F, 0x1DBF, 0x1DFF, 0x1EFF, 0x1FFF, - 0x206F, 0x209F, 0x20CF, 0x20FF, 0x214F, 0x218F, 0x21FF, 0x22FF, 0x23FF, - 0x243F, 0x245F, 0x24FF, 0x257F, 0x259F, 0x25FF, 0x26FF, 0x27BF, 0x27EF, - 0x27FF, 0x28FF, 0x297F, 0x29FF, 0x2AFF, 0x2BFF, 0x2C5F, 0x2C7F, 0x2CFF, - 0x2D2F, 0x2D7F, 0x2DDF, 0x2DFF, 0x2E7F, 0x2EFF, 0x2FDF, 0x2FFF, 0x303F, - 0x309F, 0x30FF, 0x312F, 0x318F, 0x319F, 0x31BF, 0x31EF, 0x31FF, 0x32FF, - 0x33FF, 0x4DBF, 0x4DFF, 0x9FFF, 0xA48F, 0xA4CF, 0xA4FF, 0xA63F, 0xA69F, - 0xA6FF, 0xA71F, 0xA7FF, 0xA82F, 0xA83F, 0xA87F, 0xA8DF, 0xA8FF, 0xA92F, - 0xA95F, 0xA97F, 0xA9DF, 0xAA5F, 0xAA7F, 0xAADF, 0xABFF, 0xD7AF, 0xD7FF, - 0xF8FF, 0xFAFF, 0xFB4F, 0xFDFF, 0xFE0F, 0xFE1F, - 0xFE2F, 0xFE4F, 0xFE6F, 0xFEFF, 0xFFEF, 0xFFFF, - 0x1007F, 0x100FF, 0x1013F, 0x1018F, 0x101CF, 0x101FF, 0x1029F, 0x102DF, - 0x1032F, 0x1034F, 0x1039F, 0x103DF, 0x1044F, 0x1047F, 0x104AF, 0x1083F, - 0x1085F, 0x1091F, 0x1093F, 0x10A5F, 0x10A7F, 0x10B3F, 0x10B5F, 0x10B7F, - 0x10C4F, 0x10E7F, 0x110CF, 0x123FF, 0x1247F, 0x1342F, 0x1D0FF, 0x1D1FF, - 0x1D24F, 0x1D35F, 0x1D37F, 0x1D7FF, 0x1F02F, 0x1F09F, 0x1F1FF, 0x1F2FF, + 0x007F, 0x00FF, 0x017F, 0x024F, 0x02AF, 0x02FF, 0x036F, 0x03FF, 0x04FF, + 0x052F, 0x058F, 0x05FF, 0x06FF, 0x074F, 0x077F, 0x07BF, 0x07FF, 0x083F, + 0x097F, 0x09FF, 0x0A7F, 0x0AFF, 0x0B7F, 0x0BFF, 0x0C7F, 0x0CFF, 0x0D7F, + 0x0DFF, 0x0E7F, 0x0EFF, 0x0FFF, 0x109F, 0x10FF, 0x11FF, 0x137F, 0x139F, + 0x13FF, 0x167F, 0x169F, 0x16FF, 0x171F, 0x173F, 0x175F, 0x177F, 0x17FF, + 0x18AF, 0x18FF, 0x194F, 0x197F, 0x19DF, 0x19FF, 0x1A1F, 0x1AAF, 0x1B7F, + 0x1BBF, 0x1C4F, 0x1C7F, 0x1CFF, 0x1D7F, 0x1DBF, 0x1DFF, 0x1EFF, 0x1FFF, + 0x206F, 0x209F, 0x20CF, 0x20FF, 0x214F, 0x218F, 0x21FF, 0x22FF, 0x23FF, + 0x243F, 0x245F, 0x24FF, 0x257F, 0x259F, 0x25FF, 0x26FF, 0x27BF, 0x27EF, + 0x27FF, 0x28FF, 0x297F, 0x29FF, 0x2AFF, 0x2BFF, 0x2C5F, 0x2C7F, 0x2CFF, + 0x2D2F, 0x2D7F, 0x2DDF, 0x2DFF, 0x2E7F, 0x2EFF, 0x2FDF, 0x2FFF, 0x303F, + 0x309F, 0x30FF, 0x312F, 0x318F, 0x319F, 0x31BF, 0x31EF, 0x31FF, 0x32FF, + 0x33FF, 0x4DBF, 0x4DFF, 0x9FFF, 0xA48F, 0xA4CF, 0xA4FF, 0xA63F, 0xA69F, + 0xA6FF, 0xA71F, 0xA7FF, 0xA82F, 0xA83F, 0xA87F, 0xA8DF, 0xA8FF, 0xA92F, + 0xA95F, 0xA97F, 0xA9DF, 0xAA5F, 0xAA7F, 0xAADF, 0xABFF, 0xD7AF, 0xD7FF, + 0xF8FF, 0xFAFF, 0xFB4F, 0xFDFF, 0xFE0F, 0xFE1F, + 0xFE2F, 0xFE4F, 0xFE6F, 0xFEFF, 0xFFEF, 0xFFFF, + 0x1007F, 0x100FF, 0x1013F, 0x1018F, 0x101CF, 0x101FF, 0x1029F, 0x102DF, + 0x1032F, 0x1034F, 0x1039F, 0x103DF, 0x1044F, 0x1047F, 0x104AF, 0x1083F, + 0x1085F, 0x1091F, 0x1093F, 0x10A5F, 0x10A7F, 0x10B3F, 0x10B5F, 0x10B7F, + 0x10C4F, 0x10E7F, 0x110CF, 0x123FF, 0x1247F, 0x1342F, 0x1D0FF, 0x1D1FF, + 0x1D24F, 0x1D35F, 0x1D37F, 0x1D7FF, 0x1F02F, 0x1F09F, 0x1F1FF, 0x1F2FF, 0x2A6DF, 0x2B73F, 0x2FA1F, 0xE007F, 0xE01EF, 0xFFFFF, 0x10FFFF }; diff --git a/lucene/src/test/org/apache/lucene/index/TestPerSegmentDeletes.java b/lucene/src/test/org/apache/lucene/index/TestPerSegmentDeletes.java index 0a1b04920b3..85ae6e2f40b 100644 --- a/lucene/src/test/org/apache/lucene/index/TestPerSegmentDeletes.java +++ b/lucene/src/test/org/apache/lucene/index/TestPerSegmentDeletes.java @@ -32,13 +32,12 @@ import org.apache.lucene.util.ArrayUtil; import org.apache.lucene.util.Bits; import org.apache.lucene.util.BytesRef; import org.apache.lucene.util.LuceneTestCase; -import org.apache.lucene.util.Version; public class TestPerSegmentDeletes extends LuceneTestCase { public void testDeletes1() throws Exception { //IndexWriter.debug2 = System.out; Directory dir = new MockDirectoryWrapper(new Random(random.nextLong()), new RAMDirectory()); - IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_CURRENT, + IndexWriterConfig iwc = new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)); iwc.setMergeScheduler(new SerialMergeScheduler()); iwc.setMaxBufferedDocs(5000);