Remove unused "implements Accountable". (#13330)

A number of file formats no longer implement `Accountable`. This allows
removing this interface on a number of internal classes as well.

lucene/backward-codecs/src/java/org/apache/lucene/backward_codecs/lucene95/Lucene95HnswVectorsReader.java

@@ -44,11 +44,9 @@ import org.apache.lucene.store.ChecksumIndexInput;
 import org.apache.lucene.store.DataInput;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.RandomAccessInput;
-import org.apache.lucene.util.Accountable;
 import org.apache.lucene.util.ArrayUtil;
 import org.apache.lucene.util.Bits;
 import org.apache.lucene.util.IOUtils;
-import org.apache.lucene.util.RamUsageEstimator;
 import org.apache.lucene.util.hnsw.HnswGraph;
 import org.apache.lucene.util.hnsw.HnswGraphSearcher;
 import org.apache.lucene.util.hnsw.OrdinalTranslatedKnnCollector;
@@ -392,10 +390,7 @@ public final class Lucene95HnswVectorsReader extends KnnVectorsReader implements
 
       // Contains the configuration for reading sparse vectors and translating vector ordinals to
       // docId
-      OrdToDocDISIReaderConfiguration ordToDocVectorValues)
+      OrdToDocDISIReaderConfiguration ordToDocVectorValues) {
-      implements Accountable {
-    private static final long SHALLOW_SIZE =
-        RamUsageEstimator.shallowSizeOfInstance(FieldEntry.class);
 
     static FieldEntry create(
         IndexInput input,
@@ -462,14 +457,6 @@ public final class Lucene95HnswVectorsReader extends KnnVectorsReader implements
           offsetsLength,
           ordToDocVectorValues);
     }
-
-    @Override
-    public long ramBytesUsed() {
-      return SHALLOW_SIZE
-          + Arrays.stream(nodesByLevel).mapToLong(nodes -> RamUsageEstimator.sizeOf(nodes)).sum()
-          + RamUsageEstimator.sizeOf(ordToDocVectorValues)
-          + RamUsageEstimator.sizeOf(offsetsMeta);
-    }
   }
 
   /** Read the nearest-neighbors graph from the index input */

lucene/codecs/src/java/org/apache/lucene/codecs/blockterms/FixedGapTermsIndexReader.java

@@ -324,20 +324,6 @@ public class FixedGapTermsIndexReader extends TermsIndexReaderBase {
     input.seek(dirOffset);
   }
 
-  @Override
-  public long ramBytesUsed() {
-    long sizeInBytes = ((termBytesReader != null) ? termBytesReader.ramBytesUsed() : 0);
-    for (FieldIndexData entry : fields.values()) {
-      sizeInBytes += entry.ramBytesUsed();
-    }
-    return sizeInBytes;
-  }
-
-  @Override
-  public Collection<Accountable> getChildResources() {
-    return Accountables.namedAccountables("field", fields);
-  }
-
   @Override
   public String toString() {
     return getClass().getSimpleName()

lucene/codecs/src/java/org/apache/lucene/codecs/blockterms/TermsIndexReaderBase.java

@@ -19,7 +19,6 @@ package org.apache.lucene.codecs.blockterms;
 import java.io.Closeable;
 import java.io.IOException;
 import org.apache.lucene.index.FieldInfo;
-import org.apache.lucene.util.Accountable;
 import org.apache.lucene.util.BytesRef;
 
 // TODO
@@ -34,7 +33,7 @@ import org.apache.lucene.util.BytesRef;
  *
  * @lucene.experimental
  */
-public abstract class TermsIndexReaderBase implements Closeable, Accountable {
+public abstract class TermsIndexReaderBase implements Closeable {
 
   public abstract FieldIndexEnum getFieldEnum(FieldInfo fieldInfo);
 

lucene/codecs/src/java/org/apache/lucene/codecs/blockterms/VariableGapTermsIndexReader.java

@@ -19,7 +19,6 @@ package org.apache.lucene.codecs.blockterms;
 import static org.apache.lucene.util.fst.FST.readMetadata;
 
 import java.io.IOException;
-import java.util.Collection;
 import java.util.HashMap;
 import org.apache.lucene.codecs.CodecUtil;
 import org.apache.lucene.index.CorruptIndexException;
@@ -27,8 +26,6 @@ import org.apache.lucene.index.FieldInfo;
 import org.apache.lucene.index.IndexFileNames;
 import org.apache.lucene.index.SegmentReadState;
 import org.apache.lucene.store.ChecksumIndexInput;
-import org.apache.lucene.util.Accountable;
-import org.apache.lucene.util.Accountables;
 import org.apache.lucene.util.BytesRef;
 import org.apache.lucene.util.fst.BytesRefFSTEnum;
 import org.apache.lucene.util.fst.FST;
@@ -168,22 +165,6 @@ public class VariableGapTermsIndexReader extends TermsIndexReaderBase {
   @Override
   public void close() throws IOException {}
 
-  @Override
-  public long ramBytesUsed() {
-    long sizeInBytes = 0;
-    for (FST<Long> entry : fields.values()) {
-      if (entry != null) {
-        sizeInBytes += entry.ramBytesUsed();
-      }
-    }
-    return sizeInBytes;
-  }
-
-  @Override
-  public Collection<Accountable> getChildResources() {
-    return Accountables.namedAccountables("field", fields);
-  }
-
   @Override
   public String toString() {
     return getClass().getSimpleName() + "(fields=" + fields.size() + ")";

lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextFieldsReader.java

@@ -29,7 +29,6 @@ import static org.apache.lucene.codecs.simpletext.SimpleTextSkipWriter.SKIP_LIST
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -51,17 +50,13 @@ import org.apache.lucene.search.DocIdSetIterator;
 import org.apache.lucene.store.BufferedChecksumIndexInput;
 import org.apache.lucene.store.ChecksumIndexInput;
 import org.apache.lucene.store.IndexInput;
-import org.apache.lucene.util.Accountable;
-import org.apache.lucene.util.Accountables;
 import org.apache.lucene.util.ArrayUtil;
 import org.apache.lucene.util.BytesRef;
 import org.apache.lucene.util.BytesRefBuilder;
-import org.apache.lucene.util.CharsRef;
 import org.apache.lucene.util.CharsRefBuilder;
 import org.apache.lucene.util.FixedBitSet;
 import org.apache.lucene.util.IOUtils;
 import org.apache.lucene.util.IntsRefBuilder;
-import org.apache.lucene.util.RamUsageEstimator;
 import org.apache.lucene.util.StringHelper;
 import org.apache.lucene.util.fst.BytesRefFSTEnum;
 import org.apache.lucene.util.fst.FST;
@@ -650,12 +645,7 @@ class SimpleTextFieldsReader extends FieldsProducer {
     }
   }
 
-  private static final long TERMS_BASE_RAM_BYTES_USED =
+  private class SimpleTextTerms extends Terms {
-      RamUsageEstimator.shallowSizeOfInstance(SimpleTextTerms.class)
-          + RamUsageEstimator.shallowSizeOfInstance(BytesRef.class)
-          + RamUsageEstimator.shallowSizeOfInstance(CharsRef.class);
-
-  private class SimpleTextTerms extends Terms implements Accountable {
     private final long termsStart;
     private final FieldInfo fieldInfo;
     private final int maxDoc;
@@ -748,23 +738,6 @@ class SimpleTextFieldsReader extends FieldsProducer {
       // System.out.println("FST " + fst.sizeInBytes());
     }
 
-    @Override
-    public long ramBytesUsed() {
-      return TERMS_BASE_RAM_BYTES_USED
-          + (fst != null ? fst.ramBytesUsed() : 0)
-          + RamUsageEstimator.sizeOf(scratch.bytes())
-          + RamUsageEstimator.sizeOf(scratchUTF16.chars());
-    }
-
-    @Override
-    public Collection<Accountable> getChildResources() {
-      if (fst == null) {
-        return Collections.emptyList();
-      } else {
-        return Collections.singletonList(Accountables.namedAccountable("term cache", fst));
-      }
-    }
-
     @Override
     public String toString() {
       return getClass().getSimpleName()

lucene/core/src/java/org/apache/lucene/codecs/lucene95/OrdToDocDISIReaderConfiguration.java

@@ -24,8 +24,6 @@ import org.apache.lucene.search.DocIdSetIterator;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.IndexOutput;
 import org.apache.lucene.store.RandomAccessInput;
-import org.apache.lucene.util.Accountable;
-import org.apache.lucene.util.RamUsageEstimator;
 import org.apache.lucene.util.packed.DirectMonotonicReader;
 import org.apache.lucene.util.packed.DirectMonotonicWriter;
 
@@ -33,10 +31,7 @@ import org.apache.lucene.util.packed.DirectMonotonicWriter;
  * Configuration for {@link DirectMonotonicReader} and {@link IndexedDISI} for reading sparse
  * vectors. The format in the static writing methods adheres to the Lucene95HnswVectorsFormat
  */
-public class OrdToDocDISIReaderConfiguration implements Accountable {
+public class OrdToDocDISIReaderConfiguration {
-
-  private static final long SHALLOW_SIZE =
-      RamUsageEstimator.shallowSizeOfInstance(OrdToDocDISIReaderConfiguration.class);
 
   /**
    * Writes out the docsWithField and ordToDoc mapping to the outputMeta and vectorData
@@ -188,11 +183,6 @@ public class OrdToDocDISIReaderConfiguration implements Accountable {
     this.meta = meta;
   }
 
-  @Override
-  public long ramBytesUsed() {
-    return SHALLOW_SIZE + RamUsageEstimator.sizeOf(meta);
-  }
-
   /**
    * @param dataIn the dataIn
    * @return the IndexedDISI for sparse values

lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99FlatVectorsReader.java

@@ -42,7 +42,6 @@ import org.apache.lucene.store.ChecksumIndexInput;
 import org.apache.lucene.store.IOContext;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.ReadAdvice;
-import org.apache.lucene.util.Accountable;
 import org.apache.lucene.util.IOUtils;
 import org.apache.lucene.util.RamUsageEstimator;
 import org.apache.lucene.util.hnsw.RandomVectorScorer;
@@ -271,9 +270,7 @@ public final class Lucene99FlatVectorsReader extends FlatVectorsReader {
       int dimension,
       int size,
       OrdToDocDISIReaderConfiguration ordToDoc,
-      FieldInfo info)
+      FieldInfo info) {
-      implements Accountable {
-    static final long SHALLOW_SIZE = RamUsageEstimator.shallowSizeOfInstance(FieldEntry.class);
 
     FieldEntry {
       if (similarityFunction != info.getVectorSimilarityFunction()) {
@@ -336,10 +333,5 @@ public final class Lucene99FlatVectorsReader extends FlatVectorsReader {
           ordToDoc,
           info);
     }
-
-    @Override
-    public long ramBytesUsed() {
-      return SHALLOW_SIZE + RamUsageEstimator.sizeOf(ordToDoc);
-    }
   }
 }

lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99HnswVectorsReader.java

@@ -44,7 +44,6 @@ import org.apache.lucene.store.IOContext;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.RandomAccessInput;
 import org.apache.lucene.store.ReadAdvice;
-import org.apache.lucene.util.Accountable;
 import org.apache.lucene.util.Bits;
 import org.apache.lucene.util.IOUtils;
 import org.apache.lucene.util.RamUsageEstimator;
@@ -361,10 +360,7 @@ public final class Lucene99HnswVectorsReader extends KnnVectorsReader
       DirectMonotonicReader.Meta offsetsMeta,
       long offsetsOffset,
       int offsetsBlockShift,
-      long offsetsLength)
+      long offsetsLength) {
-      implements Accountable {
-    private static final long SHALLOW_SIZE =
-        RamUsageEstimator.shallowSizeOfInstance(FieldEntry.class);
 
     static FieldEntry create(
         IndexInput input,
@@ -423,13 +419,6 @@ public final class Lucene99HnswVectorsReader extends KnnVectorsReader
           offsetsBlockShift,
           offsetsLength);
     }
-
-    @Override
-    public long ramBytesUsed() {
-      return SHALLOW_SIZE
-          + Arrays.stream(nodesByLevel).mapToLong(nodes -> RamUsageEstimator.sizeOf(nodes)).sum()
-          + RamUsageEstimator.sizeOf(offsetsMeta);
-    }
   }
 
   /** Read the nearest-neighbors graph from the index input */

lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99ScalarQuantizedVectorsReader.java

@@ -41,7 +41,6 @@ import org.apache.lucene.store.ChecksumIndexInput;
 import org.apache.lucene.store.IOContext;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.ReadAdvice;
-import org.apache.lucene.util.Accountable;
 import org.apache.lucene.util.IOUtils;
 import org.apache.lucene.util.RamUsageEstimator;
 import org.apache.lucene.util.hnsw.RandomVectorScorer;
@@ -329,10 +328,7 @@ public final class Lucene99ScalarQuantizedVectorsReader extends FlatVectorsReade
       int size,
       byte bits,
       boolean compress,
-      OrdToDocDISIReaderConfiguration ordToDoc)
+      OrdToDocDISIReaderConfiguration ordToDoc) {
-      implements Accountable {
-    private static final long SHALLOW_SIZE =
-        RamUsageEstimator.shallowSizeOfInstance(FieldEntry.class);
 
     static FieldEntry create(
         IndexInput input,
@@ -385,11 +381,6 @@ public final class Lucene99ScalarQuantizedVectorsReader extends FlatVectorsReade
           compress,
           ordToDoc);
     }
-
-    @Override
-    public long ramBytesUsed() {
-      return SHALLOW_SIZE + RamUsageEstimator.sizeOf(ordToDoc);
-    }
   }
 
   private static final class QuantizedVectorValues extends FloatVectorValues {

lucene/core/src/java/org/apache/lucene/util/packed/DirectMonotonicReader.java

@@ -20,32 +20,24 @@ import java.io.IOException;
 import java.util.Arrays;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.RandomAccessInput;
-import org.apache.lucene.util.Accountable;
 import org.apache.lucene.util.LongValues;
-import org.apache.lucene.util.RamUsageEstimator;
 
 /**
  * Retrieves an instance previously written by {@link DirectMonotonicWriter}.
  *
  * @see DirectMonotonicWriter
  */
-public final class DirectMonotonicReader extends LongValues implements Accountable {
+public final class DirectMonotonicReader extends LongValues {
-
-  private static final long BASE_RAM_BYTES_USED =
-      RamUsageEstimator.shallowSizeOfInstance(DirectMonotonicReader.class);
 
   /**
    * In-memory metadata that needs to be kept around for {@link DirectMonotonicReader} to read data
    * from disk.
    */
-  public static class Meta implements Accountable {
+  public static class Meta {
 
     // Use a shift of 63 so that there would be a single block regardless of the number of values.
     private static final Meta SINGLE_ZERO_BLOCK = new Meta(1L, 63);
 
-    private static final long BASE_RAM_BYTES_USED =
-        RamUsageEstimator.shallowSizeOfInstance(Meta.class);
-
     private final int blockShift;
     private final int numBlocks;
     private final long[] mins;
@@ -65,15 +57,6 @@ public final class DirectMonotonicReader extends LongValues implements Accountab
       this.bpvs = new byte[this.numBlocks];
       this.offsets = new long[this.numBlocks];
     }
-
-    @Override
-    public long ramBytesUsed() {
-      return BASE_RAM_BYTES_USED
-          + RamUsageEstimator.sizeOf(mins)
-          + RamUsageEstimator.sizeOf(avgs)
-          + RamUsageEstimator.sizeOf(bpvs)
-          + RamUsageEstimator.sizeOf(offsets);
-    }
   }
 
   /**
@@ -132,7 +115,6 @@ public final class DirectMonotonicReader extends LongValues implements Accountab
   private final long[] mins;
   private final float[] avgs;
   private final byte[] bpvs;
-  private final int nonZeroBpvs;
 
   private DirectMonotonicReader(
       int blockShift, LongValues[] readers, long[] mins, float[] avgs, byte[] bpvs) {
@@ -147,13 +129,6 @@ public final class DirectMonotonicReader extends LongValues implements Accountab
         || readers.length != bpvs.length) {
       throw new IllegalArgumentException();
     }
-    int nonZeroBpvs = 0;
-    for (byte b : bpvs) {
-      if (b != 0) {
-        nonZeroBpvs++;
-      }
-    }
-    this.nonZeroBpvs = nonZeroBpvs;
   }
 
   @Override
@@ -213,14 +188,4 @@ public final class DirectMonotonicReader extends LongValues implements Accountab
 
     return -1 - lo;
   }
-
-  @Override
-  public long ramBytesUsed() {
-    // Don't include meta, which should be accounted separately
-    return BASE_RAM_BYTES_USED
-        + RamUsageEstimator.shallowSizeOf(readers)
-        +
-        // Assume empty objects for the readers
-        nonZeroBpvs * RamUsageEstimator.alignObjectSize(RamUsageEstimator.NUM_BYTES_ARRAY_HEADER);
-  }
 }