mikemccand commented on a change in pull request #1234: Add compression for 
Binary doc value fields
URL: https://github.com/apache/lucene-solr/pull/1234#discussion_r374744879
 
 

 ##########
 File path: 
lucene/core/src/java/org/apache/lucene/codecs/lucene80/Lucene80DocValuesConsumer.java
 ##########
 @@ -353,67 +360,168 @@ private void writeBlock(long[] values, int length, long 
gcd, ByteBuffersDataOutp
     }
   }
 
-  @Override
-  public void addBinaryField(FieldInfo field, DocValuesProducer 
valuesProducer) throws IOException {
-    meta.writeInt(field.number);
-    meta.writeByte(Lucene80DocValuesFormat.BINARY);
-
-    BinaryDocValues values = valuesProducer.getBinary(field);
-    long start = data.getFilePointer();
-    meta.writeLong(start); // dataOffset
-    int numDocsWithField = 0;
-    int minLength = Integer.MAX_VALUE;
-    int maxLength = 0;
-    for (int doc = values.nextDoc(); doc != DocIdSetIterator.NO_MORE_DOCS; doc 
= values.nextDoc()) {
-      numDocsWithField++;
-      BytesRef v = values.binaryValue();
-      int length = v.length;
-      data.writeBytes(v.bytes, v.offset, v.length);
-      minLength = Math.min(length, minLength);
-      maxLength = Math.max(length, maxLength);
+  class CompressedBinaryBlockWriter  implements Closeable {
 
 Review comment:
   Extra space character before `implements`?

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