added java version and reset num docs reported to actual ingested

Author: john-wagster

qa/vector/src/main/java/org/elasticsearch/test/knn/KnnIndexTester.java

@@ -205,6 +205,7 @@ public static void main(String[] args) throws Exception {
                     cmdLineArgs.filterSelectivity()
                 );
             }
+            logger.info("Running with Java: " + Runtime.version());
             logger.info("Running KNN index tester with arguments: " + cmdLineArgs);
             Codec codec = createCodec(cmdLineArgs);
             Path indexPath = PathUtils.get(formatIndexPath(cmdLineArgs));
@@ -382,7 +383,7 @@ private int[] calculateColumnWidths(String[] headers, String[]... data) {
 
     static class Results {
         final String indexType, indexName;
-        final int numDocs;
+        int numDocs;
         final float filterSelectivity;
         long indexTimeMS;
         long forceMergeTimeMS;

qa/vector/src/main/java/org/elasticsearch/test/knn/KnnIndexer.java

@@ -206,6 +206,9 @@ public boolean isEnabled(String component) {
         long elapsed = System.nanoTime() - start;
         logger.debug("Indexing took {} ms for {} docs", TimeUnit.NANOSECONDS.toMillis(elapsed), numDocs);
         result.indexTimeMS = TimeUnit.NANOSECONDS.toMillis(elapsed);
+
+        // report numDocsIndexed here in case we have less than the total numDocs
+        result.numDocs = numDocsIndexed.get();
     }
 
     void forceMerge(KnnIndexTester.Results results) throws Exception {