pawel-bugalski-dynatrace commented on a change in pull request #2429:
URL: https://github.com/apache/lucene-solr/pull/2429#discussion_r585459927
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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 = new
UnmodifiableBytesRefHash(hash);
+
+ AtomicInteger notFound = new AtomicInteger();
+ AtomicInteger notEquals = new AtomicInteger();
+ AtomicInteger wrongSize = new AtomicInteger();
+ int numThreads = 10;
Review comment:
```suggestion
int numThreads = atLeast(3);
```
Sure. I've copy&pasted it from another test. I think atLeast(3) should be
fine. It's fast on smaller number of CPUs and grows to larger number of threads
when nightly tests are enabled. What you think?
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