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Merged
merged 2 commits into from
Nov 12, 2019
Merged

Auto-expand replicated closed indices #48973

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dbb72af
Auto-expand replicated closed indices
ywelsch Nov 11, 2019
c86a2ca
assertAcked
ywelsch Nov 12, 2019
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4 changes: 3 additions & 1 deletion server/src/main/java/org/elasticsearch/cluster/metadata/AutoExpandReplicas.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,8 @@
import java.util.Map;
import java.util.OptionalInt;

import static org.elasticsearch.cluster.metadata.MetaDataIndexStateService.isIndexVerifiedBeforeClosed;

/**
* This class acts as a functional wrapper around the {@code index.auto_expand_replicas} setting.
* This setting or rather it's value is expanded into a min and max value which requires special handling
Expand Down Expand Up @@ -133,7 +135,7 @@ public static Map<Integer, List<String>> getAutoExpandReplicaChanges(MetaData me
Map<Integer, List<String>> nrReplicasChanged = new HashMap<>();

for (final IndexMetaData indexMetaData : metaData) {
if (indexMetaData.getState() != IndexMetaData.State.CLOSE) {
if (indexMetaData.getState() == IndexMetaData.State.OPEN || isIndexVerifiedBeforeClosed(indexMetaData)) {
AutoExpandReplicas autoExpandReplicas = SETTING.get(indexMetaData.getSettings());
autoExpandReplicas.getDesiredNumberOfReplicas(dataNodeCount).ifPresent(numberOfReplicas -> {
if (numberOfReplicas != indexMetaData.getNumberOfReplicas()) {
Expand Down
33 changes: 33 additions & 0 deletions server/src/test/java/org/elasticsearch/indices/settings/UpdateNumberOfReplicasIT.java
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Expand Up @@ -21,6 +21,7 @@

import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.support.ActiveShardCount;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.cluster.health.ClusterHealthStatus;
import org.elasticsearch.cluster.metadata.IndexMetaData;
Expand Down Expand Up @@ -159,6 +160,22 @@ public void testAutoExpandNumberOfReplicas0ToData() throws IOException {
assertThat(clusterHealth.getIndices().get("test").getNumberOfReplicas(), equalTo(1));
assertThat(clusterHealth.getIndices().get("test").getActiveShards(), equalTo(numShards.numPrimaries * 2));

if (randomBoolean()) {
assertAcked(client().admin().indices().prepareClose("test").setWaitForActiveShards(ActiveShardCount.ALL));

clusterHealth = client().admin().cluster().prepareHealth()
.setWaitForEvents(Priority.LANGUID)
.setWaitForGreenStatus()
.setWaitForActiveShards(numShards.numPrimaries * 2)
.execute().actionGet();
logger.info("--> done cluster health, status {}", clusterHealth.getStatus());
assertThat(clusterHealth.isTimedOut(), equalTo(false));
assertThat(clusterHealth.getStatus(), equalTo(ClusterHealthStatus.GREEN));
assertThat(clusterHealth.getIndices().get("test").getActivePrimaryShards(), equalTo(numShards.numPrimaries));
assertThat(clusterHealth.getIndices().get("test").getNumberOfReplicas(), equalTo(1));
assertThat(clusterHealth.getIndices().get("test").getActiveShards(), equalTo(numShards.numPrimaries * 2));
}

final long settingsVersion =
client().admin().cluster().prepareState().get().getState().metaData().index("test").getSettingsVersion();

Expand Down Expand Up @@ -248,6 +265,22 @@ public void testAutoExpandNumberReplicas1ToData() throws IOException {
assertThat(clusterHealth.getIndices().get("test").getNumberOfReplicas(), equalTo(1));
assertThat(clusterHealth.getIndices().get("test").getActiveShards(), equalTo(numShards.numPrimaries * 2));

if (randomBoolean()) {
assertAcked(client().admin().indices().prepareClose("test").setWaitForActiveShards(ActiveShardCount.ALL));

clusterHealth = client().admin().cluster().prepareHealth()
.setWaitForEvents(Priority.LANGUID)
.setWaitForGreenStatus()
.setWaitForActiveShards(numShards.numPrimaries * 2)
.execute().actionGet();
logger.info("--> done cluster health, status {}", clusterHealth.getStatus());
assertThat(clusterHealth.isTimedOut(), equalTo(false));
assertThat(clusterHealth.getStatus(), equalTo(ClusterHealthStatus.GREEN));
assertThat(clusterHealth.getIndices().get("test").getActivePrimaryShards(), equalTo(numShards.numPrimaries));
assertThat(clusterHealth.getIndices().get("test").getNumberOfReplicas(), equalTo(1));
assertThat(clusterHealth.getIndices().get("test").getActiveShards(), equalTo(numShards.numPrimaries * 2));
}

final long settingsVersion =
client().admin().cluster().prepareState().get().getState().metaData().index("test").getSettingsVersion();
logger.info("--> add another node, should increase the number of replicas");
Expand Down