diff --git a/lucene/core/src/java/org/apache/lucene/codecs/DocValuesConsumer.java b/lucene/core/src/java/org/apache/lucene/codecs/DocValuesConsumer.java
index 94665faced1..d001053eb5b 100644
--- a/lucene/core/src/java/org/apache/lucene/codecs/DocValuesConsumer.java
+++ b/lucene/core/src/java/org/apache/lucene/codecs/DocValuesConsumer.java
@@ -103,7 +103,7 @@ public abstract class DocValuesConsumer {
     }
     // only finish if no exception is thrown!
     if (hasMerged) {
-      finish(mergeState.mergedDocCount);
+      finish(mergeState.segmentInfo.getDocCount());
     }
   }
 
diff --git a/lucene/core/src/java/org/apache/lucene/codecs/TermsConsumer.java b/lucene/core/src/java/org/apache/lucene/codecs/TermsConsumer.java
index 3d887f3c813..a8f03887bdd 100644
--- a/lucene/core/src/java/org/apache/lucene/codecs/TermsConsumer.java
+++ b/lucene/core/src/java/org/apache/lucene/codecs/TermsConsumer.java
@@ -79,7 +79,7 @@ public abstract class TermsConsumer {
     long sumTotalTermFreq = 0;
     long sumDocFreq = 0;
     long sumDFsinceLastAbortCheck = 0;
-    FixedBitSet visitedDocs = new FixedBitSet(mergeState.mergedDocCount);
+    FixedBitSet visitedDocs = new FixedBitSet(mergeState.segmentInfo.getDocCount());
 
     IndexOptions indexOptions = mergeState.fieldInfo.getIndexOptions();
     if (indexOptions == IndexOptions.DOCS_ONLY) {
diff --git a/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/FixedSortedBytesImpl.java b/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/FixedSortedBytesImpl.java
index 278cb89d30a..6b3454d3f1b 100644
--- a/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/FixedSortedBytesImpl.java
+++ b/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/FixedSortedBytesImpl.java
@@ -68,7 +68,7 @@ class FixedSortedBytesImpl {
         throws IOException {
       boolean success = false;
       try {
-        final MergeContext ctx = SortedBytesMergeUtils.init(Type.BYTES_FIXED_SORTED, docValues, comp, mergeState.mergedDocCount);
+        final MergeContext ctx = SortedBytesMergeUtils.init(Type.BYTES_FIXED_SORTED, docValues, comp, mergeState.segmentInfo.getDocCount());
         List<SortedSourceSlice> slices = SortedBytesMergeUtils.buildSlices(mergeState.docBase, mergeState.docMaps, docValues, ctx);
         final IndexOutput datOut = getOrCreateDataOut();
         datOut.writeInt(ctx.sizePerValues);
diff --git a/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/VarSortedBytesImpl.java b/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/VarSortedBytesImpl.java
index 87c3f653d5f..978761ada5c 100644
--- a/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/VarSortedBytesImpl.java
+++ b/lucene/core/src/java/org/apache/lucene/codecs/lucene40/values/VarSortedBytesImpl.java
@@ -71,7 +71,7 @@ final class VarSortedBytesImpl {
         throws IOException {
       boolean success = false;
       try {
-        MergeContext ctx = SortedBytesMergeUtils.init(Type.BYTES_VAR_SORTED, docValues, comp, mergeState.mergedDocCount);
+        MergeContext ctx = SortedBytesMergeUtils.init(Type.BYTES_VAR_SORTED, docValues, comp, mergeState.segmentInfo.getDocCount());
         final List<SortedSourceSlice> slices = SortedBytesMergeUtils.buildSlices(mergeState.docBase, mergeState.docMaps, docValues, ctx);
         IndexOutput datOut = getOrCreateDataOut();
         
diff --git a/lucene/core/src/java/org/apache/lucene/index/MergeState.java b/lucene/core/src/java/org/apache/lucene/index/MergeState.java
index b1d1cdb7487..367d231e8e8 100644
--- a/lucene/core/src/java/org/apache/lucene/index/MergeState.java
+++ b/lucene/core/src/java/org/apache/lucene/index/MergeState.java
@@ -45,7 +45,6 @@ public class MergeState {
   public List<IndexReaderAndLiveDocs> readers;        // Readers & liveDocs being merged
   public int[][] docMaps;                             // Maps docIDs around deletions
   public int[] docBase;                               // New docID base per reader
-  public int mergedDocCount;                          // Total # merged docs
   public CheckAbort checkAbort;
   public InfoStream infoStream;
 
diff --git a/lucene/core/src/java/org/apache/lucene/index/SegmentMerger.java b/lucene/core/src/java/org/apache/lucene/index/SegmentMerger.java
index eba81f12bb2..313de472169 100644
--- a/lucene/core/src/java/org/apache/lucene/index/SegmentMerger.java
+++ b/lucene/core/src/java/org/apache/lucene/index/SegmentMerger.java
@@ -107,13 +107,11 @@ final class SegmentMerger {
     // IndexWriter.close(false) takes to actually stop the
     // threads.
     
-    // nocommit: can we nuke this count too?
-    mergeState.mergedDocCount = setDocMaps();
-    mergeState.segmentInfo.setDocCount(mergeState.mergedDocCount);
+    mergeState.segmentInfo.setDocCount(setDocMaps());
     mergeDocValuesAndNormsFieldInfos();
     setMatchingSegmentReaders();
     int numMerged = mergeFields();
-    assert numMerged == mergeState.mergedDocCount;
+    assert numMerged == mergeState.segmentInfo.getDocCount();
 
     final SegmentWriteState segmentWriteState = new SegmentWriteState(mergeState.infoStream, directory, mergeState.segmentInfo,
                                                                       mergeState.fieldInfos, termIndexInterval, null, context);
@@ -126,7 +124,7 @@ final class SegmentMerger {
 
     if (mergeState.fieldInfos.hasVectors()) {
       numMerged = mergeVectors();
-      assert numMerged == mergeState.mergedDocCount;
+      assert numMerged == mergeState.segmentInfo.getDocCount();
     }
     
     // write the merged infos
diff --git a/lucene/core/src/test/org/apache/lucene/index/TestSegmentMerger.java b/lucene/core/src/test/org/apache/lucene/index/TestSegmentMerger.java
index 3fed03c6169..2cff5c3cb0e 100644
--- a/lucene/core/src/test/org/apache/lucene/index/TestSegmentMerger.java
+++ b/lucene/core/src/test/org/apache/lucene/index/TestSegmentMerger.java
@@ -84,7 +84,7 @@ public class TestSegmentMerger extends LuceneTestCase {
     merger.add(reader1);
     merger.add(reader2);
     MergeState mergeState = merger.merge();
-    int docsMerged = mergeState.mergedDocCount;
+    int docsMerged = mergeState.segmentInfo.getDocCount();
     assertTrue(docsMerged == 2);
     //Should be able to open a new SegmentReader against the new directory
     SegmentReader mergedReader = new SegmentReader(new SegmentInfoPerCommit(