iit2009060 commented on code in PR #14483:
URL: https://github.com/apache/kafka/pull/14483#discussion_r1364116455


##########
core/src/test/scala/unit/kafka/log/remote/RemoteIndexCacheTest.scala:
##########
@@ -672,16 +673,84 @@ class RemoteIndexCacheTest {
     verifyFetchIndexInvocation(count = 1)
   }
 
+  @Test
+  def testConcurrentRemoveReadForCache(): Unit = {
+    // Create a spy Cache Entry
+    val rlsMetadata = new 
RemoteLogSegmentMetadata(RemoteLogSegmentId.generateNew(idPartition), 
baseOffset, lastOffset,
+      time.milliseconds(), brokerId, time.milliseconds(), segmentSize, 
Collections.singletonMap(0, 0L))
+
+    val timeIndex = spy(createTimeIndexForSegmentMetadata(rlsMetadata, new 
File(tpDir, DIR_NAME)))
+    val txIndex = spy(createTxIndexForSegmentMetadata(rlsMetadata, new 
File(tpDir, DIR_NAME)))
+    val offsetIndex = spy(createOffsetIndexForSegmentMetadata(rlsMetadata, new 
File(tpDir, DIR_NAME)))
+
+    val spyEntry = spy(new RemoteIndexCache.Entry(offsetIndex, timeIndex, 
txIndex))
+    cache.internalCache.put(rlsMetadata.remoteLogSegmentId().id(), spyEntry)
+
+    assertCacheSize(1)
+
+    var entry: RemoteIndexCache.Entry = null
+
+    val latchForCacheRead = new CountDownLatch(1)
+    val latchForCacheRemove = new CountDownLatch(1)
+    val latchForTestWait = new CountDownLatch(1)
+
+    var markForCleanupCallCount = 0
+
+    doAnswer((invocation: InvocationOnMock) => {
+      markForCleanupCallCount += 1
+
+      if (markForCleanupCallCount == 1) {
+        // Signal the CacheRead to unblock itself
+        latchForCacheRead.countDown()
+        // Wait for signal to start renaming the files
+        latchForCacheRemove.await()
+        // Calling the markForCleanup() actual method to start renaming the 
files
+        invocation.callRealMethod()

Review Comment:
   @jeel2420  Is it not called in the 1st line I mentioned 
   `}).when(spyEntry).markForCleanup() 712 line no`



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