pawel-bugalski-dynatrace commented on a change in pull request #2429:
URL: https://github.com/apache/lucene-solr/pull/2429#discussion_r583564032
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File path: lucene/core/src/test/org/apache/lucene/util/TestBytesRefHash.java
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@@ -267,6 +271,71 @@ public void testFind() throws Exception {
}
}
+ @Test
+ public void testConcurrentAccessToUnmodifiableBytesRefHash() throws
Exception {
+ int num = atLeast(2);
+ for (int j = 0; j < num; j++) {
+ int numStrings = 797;
+ List<String> strings = new ArrayList<>(numStrings);
+ for (int i = 0; i < numStrings; i++) {
+ final String str = TestUtil.randomRealisticUnicodeString(random(), 1,
1000);
+ hash.add(new BytesRef(str));
+ assertTrue(strings.add(str));
+ }
+ int hashSize = hash.size();
+
+ UnmodifiableBytesRefHash unmodifiableHash = hash;
+
+ AtomicInteger notFound = new AtomicInteger();
+ AtomicInteger notEquals = new AtomicInteger();
+ AtomicInteger wrongSize = new AtomicInteger();
+ int numThreads = 10;
+ CountDownLatch latch = new CountDownLatch(numThreads);
+ Thread[] threads = new Thread[numThreads];
+ for (int i = 0; i < threads.length; i++) {
+ int loops = atLeast(100);
+ threads[i] =
+ new Thread(
+ () -> {
+ BytesRef scratch = new BytesRef();
+ latch.countDown();
+ try {
+ latch.await();
+ } catch (InterruptedException e) {
Review comment:
Yes. My mistake. Fixed.
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