vigyasharma commented on code in PR #14417:
URL: https://github.com/apache/lucene/pull/14417#discussion_r2015817265
##########
lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java:
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@@ -5037,4 +5037,45 @@ public void testDocValuesSkippingIndexWithoutDocValues()
throws Exception {
}
}
}
+
+ public void testAdvanceSegmentInfosCounter() throws IOException {
+ Directory dir = newDirectory();
+
+ IndexWriter writer;
+ IndexReader reader;
+
+ writer = new IndexWriter(dir, newIndexWriterConfig(new
MockAnalyzer(random())));
+
+ // add 10 documents
+ for (int i = 0; i < 10; i++) {
+ addDocWithIndex(writer, i);
+ writer.commit();
+ }
+ long beforeAdvanceSegmentCounter = writer.getSegmentInfosCounter();
+ writer.advanceSegmentInfosCounter(1);
+ assertEquals(beforeAdvanceSegmentCounter, writer.getSegmentInfosCounter());
+
+ writer.advanceSegmentInfosCounter(1000);
+ assertEquals(1000, writer.getSegmentInfosCounter());
+
+ // add 40 documents
+ for (int i = 10; i < 50; i++) {
+ addDocWithIndex(writer, i);
+ writer.commit();
+ }
+
+ assertEquals(1041, writer.getSegmentInfosCounter());
Review Comment:
I think it's sufficient to assert that the counter value is `>=1000` i.e.
higher than what you advanced it to. `SegmentInfos.counter` is public and gets
incremented each time a segment is named, including background merges.
Asserting on an exact value can make the test flaky.
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