hudeqi commented on code in PR #14243:
URL: https://github.com/apache/kafka/pull/14243#discussion_r1312846642


##########
core/src/test/scala/unit/kafka/log/remote/RemoteIndexCacheTest.scala:
##########
@@ -406,9 +417,16 @@ class RemoteIndexCacheTest {
   @Test
   def testReloadCacheAfterClose(): Unit = {
     // close existing cache created in test setup before creating a new one
+    val cacheForEstimate = new RemoteIndexCache(2L, rsm, tpDir.toString)
+    val tpIdForEstimate = new TopicIdPartition(Uuid.randomUuid(), new 
TopicPartition("foo", 0))
+    val metadataListForEstimate = generateRemoteLogSegmentMetadata(size = 1, 
tpIdForEstimate)
+    val entryForEstimate = 
cacheForEstimate.getIndexEntry(metadataListForEstimate.head)
+    val estimateEntryBytesSize = 
RemoteIndexCache.estimatedEntrySize(entryForEstimate)
+    Utils.closeQuietly(cacheForEstimate, "RemoteIndexCache created for 
estimating entry size")

Review Comment:
   Because this test will test the size reserved for only two elements, that 
is, put three in, it will be verified that since there are only two in the 
eviction, the cache here cannot be set large enough. @divijvaidya 



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