keith-turner commented on code in PR #4659:
URL: https://github.com/apache/accumulo/pull/4659#discussion_r1639929818


##########
test/src/main/java/org/apache/accumulo/test/ample/FlakyInterceptor.java:
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@@ -0,0 +1,94 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.accumulo.test.ample;
+
+import static org.apache.accumulo.core.client.ConditionalWriter.Status.UNKNOWN;
+import static org.apache.accumulo.core.util.LazySingletons.RANDOM;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.apache.accumulo.core.client.ConditionalWriter;
+import org.apache.accumulo.core.data.ConditionalMutation;
+import org.apache.accumulo.test.ample.metadata.ConditionalWriterInterceptor;
+import org.apache.hadoop.io.Text;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class FlakyInterceptor implements ConditionalWriterInterceptor {

Review Comment:
   > There is one more issue with this that I just realized and that is the CI 
build is generally configured to re-run tests up to 5 times to handle flaky 
tests. So because of that, if we do get a test failure that is a rare edge 
case, it is unlikely Jenkins would catch it because it would just re-run and it 
would pass.
   
   Yeah that is a problem.  Should we open a follow on issue to explore adding 
more deterministic tests?



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