kbendick commented on a change in pull request #3801:
URL: https://github.com/apache/iceberg/pull/3801#discussion_r775091445



##########
File path: core/src/test/java/org/apache/iceberg/hadoop/TestCachingCatalog.java
##########
@@ -252,9 +254,9 @@ public void 
testCacheExpirationEagerlyRemovesMetadataTables() throws IOException
     ticker.advance(HALF_OF_EXPIRATION);
     
Assertions.assertThat(catalog.cache().asMap()).doesNotContainKey(tableIdent);
 
-    Arrays.stream(metadataTables(tableIdent)).forEach(metadataTable ->
-        Assert.assertFalse("When a data table expires, its metadata tables 
should expire regardless of age",
-            catalog.cache().asMap().containsKey(metadataTable)));
+    // Removal of metadata tables from cache is async, use awaitility
+    await().untilAsserted(() ->
+        
Assertions.assertThat(catalog.cache().asMap()).doesNotContainKeys(metadataTables(tableIdent)));

Review comment:
       Great. Our work in the callback is relatively negligible (building a 
list of maybe and disabling async would be the desired behavior. Really 
appreciate the input and knowledge sharing! 😊




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