jacek-lewandowski commented on code in PR #2894:
URL: https://github.com/apache/cassandra/pull/2894#discussion_r1403998950


##########
src/java/org/apache/cassandra/config/DatabaseDescriptor.java:
##########
@@ -1415,6 +1426,52 @@ public static void applyPartitioner(Config conf)
         paritionerName = partitioner.getClass().getCanonicalName();
     }
 
+    private static DiskAccessMode 
resolveCommitLogWriteDiskAccessMode(DiskAccessMode providedDiskAccessMode)
+    {
+        boolean compressOrEncrypt = getCommitLogCompression() != null || 
(getEncryptionContext() != null && getEncryptionContext().isEnabled());
+        boolean directIOSupported = false;
+        try
+        {
+            directIOSupported = FileUtils.getBlockSize(new 
File(getCommitLogLocation())) > 0;

Review Comment:
   I'm not sure - why JDK version? 5.0 runs on 11+ and we do that not because 
of JDK but rather because that some file systems does not have "block size", 
for example in memory fs



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