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From GitBox <...@apache.org>
Subject [GitHub] [cassandra] yifan-c commented on a change in pull request #470: CASSANDRA-15630 fix testSerializeError
Date Tue, 17 Mar 2020 20:24:03 GMT
yifan-c commented on a change in pull request #470: CASSANDRA-15630 fix testSerializeError
URL: https://github.com/apache/cassandra/pull/470#discussion_r393947441
 
 

 ##########
 File path: test/unit/org/apache/cassandra/net/ConnectionUtils.java
 ##########
 @@ -240,6 +247,27 @@ private void doCheck(FailCheck testAndFailCheck)
         }
     }
 
+    private static void longCheck(Runnable assertion, long timeout, TimeUnit timeUnit)
+    {
+        long start = System.currentTimeMillis();
+        for (;;)
+        {
+            try
+            {
+                assertion.run();
+                return;
+            }
+            catch (AssertionError e)
+            {
+                long elapsedMs = System.currentTimeMillis() - start;
+                if (elapsedMs > timeUnit.toMillis(timeout))
+                    throw e;
+                else
+                    Uninterruptibles.sleepUninterruptibly(5, TimeUnit.MILLISECONDS);
 
 Review comment:
   Thanks for the suggestion. I took a close look at the `Retry` utility. 
   I think 1) scheduling the check in the other thread does not benefit in this case. Because
it needs to block for the check result anyway. 
   2) the check operation is not resources intensive (read multiple values and compare). Exponential
backoff does not help. In fact, the test can check frequently in order to exit quick. 
   
   There is no api in `Retry` allows adding a different backup off time yet. 

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