muse-dev[bot] commented on a change in pull request #2317:
URL: https://github.com/apache/lucene-solr/pull/2317#discussion_r571784231
##########
File path:
lucene/test-framework/src/java/org/apache/lucene/index/BaseStoredFieldsFormatTestCase.java
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@@ -839,4 +839,38 @@ public void testMismatchedFields() throws Exception {
IOUtils.close(iw, ir, everything);
IOUtils.close(dirs);
}
+
+ public void testPrefetch() throws Exception {
+ Directory dir = newDirectory();
+ IndexWriterConfig config = newIndexWriterConfig().setCodec(getCodec());
+ IndexWriter writer = new IndexWriter(dir, config);
+ int numDocs = atLeast(100);
+ Map<Integer, Document> docs = new HashMap<>();
+ for (int i = 0; i < numDocs; i++) {
+ Document doc = new Document();
+ int numFields = random().nextInt(rarely() ? 1000 : 100);
+ doc.add(new StringField("num_fields", Integer.toString(numFields),
Store.NO));
+ for (int f = 0; f < numFields; f++) {
+ String str = "doc=" + i + "f=" + f;
+ doc.add(new StringField("field-" + f, str, Store.YES));
+ }
+ writer.addDocument(doc);
+ docs.put(i, doc);
+ }
+ final DirectoryReader reader = new
RandomPrefetchStoredFieldsCodecDirectoryReader(DirectoryReader.open(writer));
+ int iters = atLeast(100);
+ for (int i = 0; i < iters; i++) {
+ int docId = random().nextInt(numDocs);
+ int numFields =
Integer.parseInt(docs.get(docId).getField("num_fields").stringValue());
Review comment:
*NULL_DEREFERENCE:* object returned by
`docs.get(valueOf(docId)).getField("num_fields")` could be null and is
dereferenced at line 864.
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