[server] Make cleaning up partitions on startup configurable. Off by default

clients/da-vinci-client/src/main/java/com/linkedin/davinci/config/VeniceServerConfig.java

@@ -80,6 +80,7 @@
 import static com.linkedin.venice.ConfigKeys.SERVER_DEDICATED_CONSUMER_POOL_FOR_AA_WC_LEADER_ENABLED;
 import static com.linkedin.venice.ConfigKeys.SERVER_DEDICATED_CONSUMER_POOL_SIZE_FOR_AA_WC_LEADER;
 import static com.linkedin.venice.ConfigKeys.SERVER_DEDICATED_DRAINER_FOR_SORTED_INPUT_ENABLED;
+import static com.linkedin.venice.ConfigKeys.SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_STARTUP;
 import static com.linkedin.venice.ConfigKeys.SERVER_DISK_FULL_THRESHOLD;
 import static com.linkedin.venice.ConfigKeys.SERVER_DISK_HEALTH_CHECK_INTERVAL_IN_SECONDS;
 import static com.linkedin.venice.ConfigKeys.SERVER_DISK_HEALTH_CHECK_SERVICE_ENABLED;
@@ -564,6 +565,7 @@ public class VeniceServerConfig extends VeniceClusterConfig {
   private final boolean nearlineWorkloadProducerThroughputOptimizationEnabled;
   private final int zstdDictCompressionLevel;
   private final long maxWaitAfterUnsubscribeMs;
+  private final boolean deleteUnassignedPartitionsOnStartup;
 
   public VeniceServerConfig(VeniceProperties serverProperties) throws ConfigurationException {
     this(serverProperties, Collections.emptyMap());
@@ -951,6 +953,9 @@ public VeniceServerConfig(VeniceProperties serverProperties, Map<String, Map<Str
     }
     maxWaitAfterUnsubscribeMs =
         serverProperties.getLong(SERVER_MAX_WAIT_AFTER_UNSUBSCRIBE_MS, TimeUnit.MINUTES.toMillis(30));
+
+    deleteUnassignedPartitionsOnStartup =
+        serverProperties.getBoolean(SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_STARTUP, false);
   }
 
   long extractIngestionMemoryLimit(
@@ -1728,4 +1733,8 @@ public int getZstdDictCompressionLevel() {
   public long getMaxWaitAfterUnsubscribeMs() {
     return maxWaitAfterUnsubscribeMs;
   }
+
+  public boolean isDeleteUnassignedPartitionsOnStartupEnabled() {
+    return deleteUnassignedPartitionsOnStartup;
+  }
 }

clients/da-vinci-client/src/main/java/com/linkedin/davinci/storage/StorageService.java

@@ -376,6 +376,10 @@ public synchronized AbstractStorageEngine openStore(
   }
 
   public synchronized void checkWhetherStoragePartitionsShouldBeKeptOrNot(SafeHelixManager manager) {
+    if (!serverConfig.isDeleteUnassignedPartitionsOnStartupEnabled()) {
+      return;
+    }
+
     if (manager == null) {
       return;
     }

clients/da-vinci-client/src/test/java/com/linkedin/davinci/storage/StorageServiceTest.java

@@ -214,6 +214,12 @@ public Object answer(InvocationOnMock invocation) throws Throwable {
     configLoaderField.setAccessible(true);
     configLoaderField.set(mockStorageService, mockVeniceConfigLoader);
 
+    VeniceServerConfig mockServerConfig = mock(VeniceServerConfig.class);
+    when(mockServerConfig.isDeleteUnassignedPartitionsOnStartupEnabled()).thenReturn(true);
+    Field serverConfigField = StorageService.class.getDeclaredField("serverConfig");
+    serverConfigField.setAccessible(true);
+    serverConfigField.set(mockStorageService, mockServerConfig);
+
     doCallRealMethod().when(mockStorageService).checkWhetherStoragePartitionsShouldBeKeptOrNot(manager);
     mockStorageService.checkWhetherStoragePartitionsShouldBeKeptOrNot(manager);
     verify(abstractStorageEngine).dropPartition(0);

internal/venice-common/src/main/java/com/linkedin/venice/ConfigKeys.java

@@ -2342,4 +2342,7 @@ private ConfigKeys() {
       "server.nearline.workload.producer.throughput.optimization.enabled";
 
   public static final String SERVER_ZSTD_DICT_COMPRESSION_LEVEL = "server.zstd.dict.compression.level";
+
+  public static final String SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_STARTUP =
+      "server.delete.unassigned.partitions.on.startup";
 }

internal/venice-test-common/src/integrationTest/java/com/linkedin/venice/integration/utils/VeniceServerWrapper.java

@@ -22,6 +22,7 @@
 import static com.linkedin.venice.ConfigKeys.PUB_SUB_CONSUMER_ADAPTER_FACTORY_CLASS;
 import static com.linkedin.venice.ConfigKeys.PUB_SUB_PRODUCER_ADAPTER_FACTORY_CLASS;
 import static com.linkedin.venice.ConfigKeys.SERVER_DATABASE_CHECKSUM_VERIFICATION_ENABLED;
+import static com.linkedin.venice.ConfigKeys.SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_STARTUP;
 import static com.linkedin.venice.ConfigKeys.SERVER_DISK_FULL_THRESHOLD;
 import static com.linkedin.venice.ConfigKeys.SERVER_HTTP2_INBOUND_ENABLED;
 import static com.linkedin.venice.ConfigKeys.SERVER_INGESTION_HEARTBEAT_INTERVAL_MS;
@@ -94,6 +95,8 @@ public class VeniceServerWrapper extends ProcessWrapper implements MetricsAware
   public static final String SERVER_ENABLE_SSL = "server_enable_ssl";
   public static final String SERVER_SSL_TO_KAFKA = "server_ssl_to_kafka";
   public static final String CLIENT_CONFIG_FOR_CONSUMER = "client_config_for_consumer";
+  public static final String SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_START =
+      "server_delete_unassigned_partitions_on_start";
 
   private TestVeniceServer veniceServer;
   private final VeniceProperties serverProps;
@@ -197,6 +200,8 @@ static StatefulServiceProvider<VeniceServerWrapper> generateService(
       Map<String, Map<String, String>> kafkaClusterMap,
       String serverD2ServiceName) {
     return (serviceName, dataDirectory) -> {
+      boolean serverDeleteUnassignedPartitionsOnStartup =
+          Boolean.parseBoolean(featureProperties.getProperty(SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_START, "false"));
       boolean enableServerAllowlist =
           Boolean.parseBoolean(featureProperties.getProperty(SERVER_ENABLE_SERVER_ALLOW_LIST, "false"));
       boolean sslToKafka = Boolean.parseBoolean(featureProperties.getProperty(SERVER_SSL_TO_KAFKA, "false"));
@@ -257,7 +262,8 @@ static StatefulServiceProvider<VeniceServerWrapper> generateService(
               pubSubBrokerWrapper.getPubSubClientsFactory().getAdminAdapterFactory().getClass().getName())
           .put(SERVER_INGESTION_HEARTBEAT_INTERVAL_MS, 5000)
           .put(SERVER_LEADER_COMPLETE_STATE_CHECK_IN_FOLLOWER_VALID_INTERVAL_MS, 5000)
-          .put(SERVER_RESUBSCRIPTION_TRIGGERED_BY_VERSION_INGESTION_CONTEXT_CHANGE_ENABLED, true);
+          .put(SERVER_RESUBSCRIPTION_TRIGGERED_BY_VERSION_INGESTION_CONTEXT_CHANGE_ENABLED, true)
+          .put(SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_STARTUP, serverDeleteUnassignedPartitionsOnStartup);
       if (sslToKafka) {
         serverPropsBuilder.put(KAFKA_SECURITY_PROTOCOL, PubSubSecurityProtocol.SSL.name());
         serverPropsBuilder.put(KafkaTestUtils.getLocalCommonKafkaSSLConfig(SslUtils.getTlsConfiguration()));

internal/venice-test-common/src/integrationTest/java/com/linkedin/venice/server/VeniceServerTest.java

@@ -1,6 +1,7 @@
 package com.linkedin.venice.server;
 
 import static com.linkedin.venice.ConfigKeys.CONTROLLER_ZK_SHARED_META_SYSTEM_SCHEMA_STORE_AUTO_CREATION_ENABLED;
+import static com.linkedin.venice.integration.utils.VeniceServerWrapper.SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_START;
 import static com.linkedin.venice.integration.utils.VeniceServerWrapper.SERVER_ENABLE_SERVER_ALLOW_LIST;
 import static com.linkedin.venice.integration.utils.VeniceServerWrapper.SERVER_IS_AUTO_JOIN;
 
@@ -203,6 +204,7 @@ public void testStartServerAndShutdownWithPartitionAssignmentVerification() {
       Properties featureProperties = new Properties();
       featureProperties.setProperty(SERVER_ENABLE_SERVER_ALLOW_LIST, Boolean.toString(true));
       featureProperties.setProperty(SERVER_IS_AUTO_JOIN, Boolean.toString(true));
+      featureProperties.setProperty(SERVER_DELETE_UNASSIGNED_PARTITIONS_ON_START, Boolean.toString(true));
       cluster.addVeniceServer(featureProperties, new Properties());
       VeniceServerWrapper server = cluster.getVeniceServers().get(0);
       Assert.assertTrue(server.getVeniceServer().isStarted());
@@ -218,6 +220,7 @@ public void testStartServerAndShutdownWithPartitionAssignmentVerification() {
       Assert.assertEquals(storageService.getStorageEngine(storeName).getPartitionIds().size(), 3);
 
       cluster.stopVeniceServer(server.getPort());
+      Assert.assertFalse(server.getVeniceServer().isStarted());
 
       // Create new servers so partition assignment is removed for the offline participant
       cluster.addVeniceServer(featureProperties, new Properties());