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   * Licensed to the Apache Software Foundation (ASF) under one
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   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
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   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
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   * See the License for the specific language governing permissions and
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  package org.apache.cassandra.distributed.upgrade;
  
  import org.junit.Test;
  
  import org.apache.cassandra.distributed.api.ConsistencyLevel;
  import org.apache.cassandra.metrics.DefaultNameFactory;
  
  import static org.junit.Assert.assertEquals;
  
  import static org.apache.cassandra.distributed.shared.AssertUtils.assertRows;
  import static org.apache.cassandra.distributed.shared.AssertUtils.row;
  
  /**
   * Test read repair on rows with TTLs when the cluster nodes are on different versions.
   */
  public class MixedModeReadRepairTTLTest extends UpgradeTestBase
  {
      public static final String BLOCKING_REPAIR_METRIC_NAME =
          new DefaultNameFactory("ReadRepair").createMetricName("RepairedBlocking").getMetricName();
  
      @Test
      public void mixedModeReadRepairRowTTL() throws Throwable
      {
          Object[] row1 = row(0, 1, 10);
  
          allUpgrades(2, 1)
          .setup(cluster -> cluster.schemaChange(withKeyspace("CREATE TABLE %s.t (k int, c int, v int, PRIMARY KEY (k, c))")))
          .runBeforeClusterUpgrade(cluster -> {
              // Insert a row with a TTL, so digests will contain a non-empty local deletion time:
              String insert = withKeyspace("INSERT INTO %s.t (k, c, v) VALUES (?, ?, ?) USING TTL 86000");
              cluster.coordinator(1).execute(insert, ConsistencyLevel.ALL, row1);
          })
          .runAfterNodeUpgrade((cluster, node) -> {
              // Ensure that read-repair is not triggered with nodes on different versions:
              String query = withKeyspace("SELECT * FROM %s.t WHERE k = 0");
              long before = cluster.get(node).metrics().getCounter(BLOCKING_REPAIR_METRIC_NAME);
              assertRows(cluster.coordinator(node).execute(query, ConsistencyLevel.ALL), row1);
              long after = cluster.get(node).metrics().getCounter(BLOCKING_REPAIR_METRIC_NAME);
              assertEquals(before, after);
          })
          .run();
      }
  }
  