dcapwell commented on code in PR #3835:
URL: https://github.com/apache/cassandra/pull/3835#discussion_r1932634898


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src/java/org/apache/cassandra/config/CassandraRelevantProperties.java:
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@@ -554,7 +554,7 @@ public enum CassandraRelevantProperties
     TCM_USE_NO_OP_REPLICATOR("cassandra.test.use_no_op_replicator", "false"),
 
     TEST_BBFAILHELPER_ENABLED("test.bbfailhelper.enabled"),
-    TEST_BLOB_SHARED_SEED("cassandra.test.blob.shared.seed"),
+    TEST_BLOB_SHARED_SEED("cassandra.test.blob.shared.seed", "42"),

Review Comment:
   so, the tests use `qt()` and controls the seed for the test.  The blob logic 
has a giant blob that is shared by all tests, and uses a seed to populate the 
bytes... this seed is decoupled from the test seed, and would use 
`currentTimeMillis`; this caused the tests to be non-deterministic and not 
repeatable when errors were found.



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