LUCENE-9639: Implements SimpleTextVectorReader#ramBytesUsed (#2433)
* Use single class imports
diff --git a/lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextVectorReader.java b/lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextVectorReader.java
index 15603c1..1ef0200 100644
--- a/lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextVectorReader.java
+++ b/lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextVectorReader.java
@@ -40,6 +40,7 @@
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.BytesRefBuilder;
import org.apache.lucene.util.IOUtils;
+import org.apache.lucene.util.RamUsageEstimator;
import org.apache.lucene.util.StringHelper;
/**
@@ -49,6 +50,10 @@
* @lucene.experimental
*/
public class SimpleTextVectorReader extends VectorReader {
+ // shallowSizeOfInstance for fieldEntries map is included in ramBytesUsed() calculation
+ private static final long BASE_RAM_BYTES_USED =
+ RamUsageEstimator.shallowSizeOfInstance(SimpleTextVectorReader.class)
+ + RamUsageEstimator.shallowSizeOfInstance(BytesRef.class);
private static final BytesRef EMPTY = new BytesRef("");
@@ -174,7 +179,16 @@
@Override
public long ramBytesUsed() {
- return 0;
+ // mirror implementation of Lucene90VectorReader#ramBytesUsed
+ long totalBytes = BASE_RAM_BYTES_USED;
+ totalBytes += RamUsageEstimator.sizeOf(scratch.bytes());
+ totalBytes +=
+ RamUsageEstimator.sizeOfMap(
+ fieldEntries, RamUsageEstimator.shallowSizeOfInstance(FieldEntry.class));
+ for (FieldEntry entry : fieldEntries.values()) {
+ totalBytes += RamUsageEstimator.sizeOf(entry.ordToDoc);
+ }
+ return totalBytes;
}
@Override
