nastra commented on code in PR #5862:
URL: https://github.com/apache/iceberg/pull/5862#discussion_r981241109


##########
core/src/test/java/org/apache/iceberg/TestManifestCaching.java:
##########
@@ -250,6 +236,18 @@ private Table createTable(Map<String, String> properties) 
throws Exception {
         .create();
   }
 
+  protected HadoopCatalog hadoopCatalog(Map<String, String> catalogProperties) 
throws IOException {

Review Comment:
   can probably be made private



##########
core/src/test/java/org/apache/iceberg/TestManifestCaching.java:
##########
@@ -178,22 +181,15 @@ public void testWeakFileIOReferenceCleanUp() {
       }
     }
 
-    System.gc();
+    GcFinalization.awaitFullGc();

Review Comment:
   the comment in L188 says `// Insert one more FileIO to trigger cache 
eviction.` but aren't we triggering cache eviction already here?
   It seems the original version of the test was expecting things to be evicted 
only when `IO_MANIFEST_CACHE_MAX_FILEIO_DEFAULT` is reached/exceeded



##########
versions.props:
##########
@@ -10,6 +10,7 @@ org.apache.pig:pig = 0.14.0
 com.fasterxml.jackson.*:* = 2.11.4
 com.google.errorprone:error_prone_annotations = 2.3.3
 com.google.guava:guava = 31.1-jre
+com.google.guava:guava-testlib = 31.1-jre

Review Comment:
   nit: you should be able to replace the previous line with 
`com.google.guava:* = 31.1-jre`



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