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Test bi-directional index following during a rolling upgrade. #38962

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Feb 18, 2019
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Test bi-directional index following during a rolling upgrade. #38962

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67 changes: 65 additions & 2 deletions ...g-upgrade-multi-cluster/src/test/java/org/elasticsearch/upgrades/CcrRollingUpgradeIT.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@

public class CcrRollingUpgradeIT extends AbstractMultiClusterUpgradeTestCase {

public void testIndexFollowing() throws Exception {
public void testUniDirectionalIndexFollowing() throws Exception {
logger.info("clusterName={}, upgradeState={}", clusterName, upgradeState);

if (clusterName == ClusterName.LEADER) {
Expand Down Expand Up @@ -230,6 +230,61 @@ public void testCannotFollowLeaderInUpgradedCluster() throws Exception {
}
}

public void testBiDirectionalIndexFollowing() throws Exception {
logger.info("clusterName={}, upgradeState={}", clusterName, upgradeState);

if (clusterName == ClusterName.FOLLOWER) {
switch (upgradeState) {
case NONE:
createLeaderIndex(leaderClient(), "leader_index5");
index(leaderClient(), "leader_index5", 128);

followIndex(followerClient(), "leader", "leader_index5", "follower_index5");
followIndex(leaderClient(), "follower", "follower_index5", "follower_index6");
assertTotalHitCount("follower_index5", 128, followerClient());
assertTotalHitCount("follower_index6", 128, leaderClient());

index(leaderClient(), "leader_index5", 128);
pauseIndexFollowing(followerClient(), "follower_index5");
pauseIndexFollowing(leaderClient(), "follower_index6");
break;
case ONE_THIRD:
index(leaderClient(), "leader_index5", 128);
break;
case TWO_THIRD:
index(leaderClient(), "leader_index5", 128);
break;
case ALL:
index(leaderClient(), "leader_index5", 128);
break;
default:
throw new AssertionError("unexpected upgrade_state [" + upgradeState + "]");
}
} else if (clusterName == ClusterName.LEADER) {
switch (upgradeState) {
case NONE:
break;
case ONE_THIRD:
index(leaderClient(), "leader_index5", 128);
break;
case TWO_THIRD:
index(leaderClient(), "leader_index5", 128);
break;
case ALL:
resumeIndexFollowing(followerClient(), "follower_index5");
resumeIndexFollowing(leaderClient(), "follower_index6");

assertTotalHitCount("follower_index5", 896, followerClient());
assertTotalHitCount("follower_index6", 896, leaderClient());
break;
default:
throw new AssertionError("unexpected upgrade_state [" + upgradeState + "]");
}
} else {
throw new AssertionError("unexpected cluster_name [" + clusterName + "]");
}
}

private static void createLeaderIndex(RestClient client, String indexName) throws IOException {
Settings.Builder indexSettings = Settings.builder()
.put("index.number_of_shards", 1)
Expand Down Expand Up @@ -305,9 +360,17 @@ private static void verifyTotalHitCount(final String index,
}

private static void stopIndexFollowing(RestClient client, String followerIndex) throws IOException {
assertOK(client.performRequest(new Request("POST", "/" + followerIndex + "/_ccr/pause_follow")));
pauseIndexFollowing(client, followerIndex);
assertOK(client.performRequest(new Request("POST", "/" + followerIndex + "/_close")));
assertOK(client.performRequest(new Request("POST", "/" + followerIndex + "/_ccr/unfollow")));
}

private static void pauseIndexFollowing(RestClient client, String followerIndex) throws IOException {
assertOK(client.performRequest(new Request("POST", "/" + followerIndex + "/_ccr/pause_follow")));
}

private static void resumeIndexFollowing(RestClient client, String followerIndex) throws IOException {
assertOK(client.performRequest(new Request("POST", "/" + followerIndex + "/_ccr/resume_follow")));
}

}