javadoc

server/src/main/java/org/elasticsearch/index/codec/tsdb/es819/ES819TSDBDocValuesFormat.java

@@ -35,8 +35,6 @@ public class ES819TSDBDocValuesFormat extends org.apache.lucene.codecs.DocValues
  public static final int NUMERIC_BLOCK_SIZE = 1 << NUMERIC_BLOCK_SHIFT;
  static final int NUMERIC_BLOCK_MASK = NUMERIC_BLOCK_SIZE - 1;
  static final int DIRECT_MONOTONIC_BLOCK_SHIFT = 16;
- public static final int ORDINAL_RANGE_ENCODING_MIN_DOC_PER_ORDINAL = 512;
- public static final int ORDINAL_RANGE_ENCODING_BLOCK_SHIFT = 12;
  static final String CODEC_NAME = "ES819TSDB";
  static final String DATA_CODEC = "ES819TSDBDocValuesData";
  static final String DATA_EXTENSION = "dvd";
@@ -106,6 +104,18 @@ private static boolean getOptimizedMergeEnabledDefault() {
  return Boolean.parseBoolean(System.getProperty(OPTIMIZED_MERGE_ENABLED_NAME, Boolean.TRUE.toString()));
  }
 
+ /**
+ * The default minimum number of documents per ordinal required to use ordinal range encoding.
+ * If the average number of documents per ordinal is below this threshold, it is more efficient to encode doc values in blocks.
+ * A much smaller value may be used in tests to exercise ordinal range encoding more frequently.
+ */
+ public static final int ORDINAL_RANGE_ENCODING_MIN_DOC_PER_ORDINAL = 512;
+
+ /**
+ * The block shift used in DirectMonotonicWriter when encoding the start docs of each ordinal with ordinal range encoding.
+ */
+ public static final int ORDINAL_RANGE_ENCODING_BLOCK_SHIFT = 12;
+
  final int skipIndexIntervalSize;
  final int minDocsPerOrdinalForOrdinalRangeEncoding;
  private final boolean enableOptimizedMerge;