abhishekrb19 opened a new pull request, #18662: URL: https://github.com/apache/druid/pull/18662
This logs all handlers during the start and stop lifecycle stages. It’s useful for understanding the execution order ahead of time, especially to identify which handlers didn’t run when a service stops. For example, some handlers like `SupervisorManager.stop()` can take a while to stop, blocking other subsequent handlers from stopping if a certain timeout is exceeded. A sample of the start lifecycle logs: ```log 2025-10-18T00:39:38,019 INFO [main] org.apache.druid.java.util.common.lifecycle.Lifecycle - Starting lifecycle [module] stage [NORMAL] for handlers [[LoggingEmitter, ServiceEmitter, org.apache.druid.curator.CuratorModule$1@3e89f5bc, org.apache.druid.curator.discovery.DiscoveryModule$5@259aec72, DerbyConnector, org.apache.druid.guice.JacksonConfigManagerModule$1@36d39655, ConfigManager, SQLAuditManager, JvmMonitor, MetadataTaskStorage, IndexerSQLMetadataStorageCoordinator, org.apache.druid.java.util.common.concurrent.ExecutorServices$1@26be0d23, org.apache.druid.java.util.common.concurrent.ExecutorServices$1@576b385d, SegmentAllocationQueue, SQLMetadataSupervisorManager, org.apache.druid.java.util.http.client.HttpClientInit$1@2560a7be, org.apache.druid.java.util.http.client.HttpClientInit$2@fabfc79, NettyHttpClient, CuratorDruidNodeDiscoveryProvider, TaskMaster, org.apache.druid.metadata.SqlSegmentsMetadataManagerProvider$1@59aa2fba, SqlSegmentsMetadataManagerV2, org.apache.druid.j ava.util.common.concurrent.ExecutorServices$1@578d5d02, OverlordCompactionScheduler, DiscoveryServiceLocator, org.apache.druid.java.util.common.concurrent.ExecutorServices$1@77f04d1a, DruidOverlord, BasicMonitorScheduler, HdfsStorageAuthentication, HdfsStorageAvailabilityChecker, org.apache.druid.java.util.http.client.HttpClientInit$1@27682fa9, org.apache.druid.java.util.http.client.HttpClientInit$2@2fb70301, NettyHttpClient, HttpServerInventoryView, CoordinatorServerView, org.apache.druid.metadata.SQLMetadataRuleManagerProvider$1@126f2eb8, SQLMetadataRuleManager, DiscoveryServiceLocator, org.apache.druid.java.util.common.concurrent.ExecutorServices$1@67823972, org.apache.druid.java.util.common.concurrent.ExecutorServices$1@1f1574c, CoordinatorDynamicConfigSyncer, DruidCoordinator]] 2025-10-18T00:39:38,023 INFO [main] org.apache.druid.java.util.common.lifecycle.Lifecycle$AnnotationBasedHandler - Starting lifecycle [LoggingEmitter#start] 2025-10-18T00:41:46,877 INFO [Thread-57] org.apache.druid.indexing.overlord.supervisor.SupervisorManager - Waiting for [6] supervisors to shutdown ``` A sample of the stop lifecycle logs: ```log 2025-10-18T00:41:46,863 INFO [Thread-57] org.apache.druid.java.util.common.lifecycle.Lifecycle - Stopping lifecycle [task-master] stage [NORMAL] for handlers [[org.apache.druid.indexing.overlord.DruidOverlord$1$2@111b1ea8, OverlordDutyExecutor, SupervisorManager, org.apache.druid.indexing.overlord.DruidOverlord$1$1@388e6093, TaskQueue, HttpRemoteTaskRunner]] 2025-10-18T00:41:46,871 INFO [Thread-57] org.apache.druid.java.util.common.lifecycle.Lifecycle$AnnotationBasedHandler - Stopping lifecyle [OverlordDutyExecutor#stop]. 2025-10-18T00:41:46,871 INFO [Thread-57] org.apache.druid.java.util.common.lifecycle.Lifecycle$AnnotationBasedHandler - Stopping lifecyle [SupervisorManager#stop]. 2025-10-18T00:41:46,872 INFO [Thread-57] org.apache.druid.indexing.overlord.supervisor.SupervisorManager - Stopping [6] supervisors ``` This PR has: - [x] been self-reviewed. - [x] been tested in a test Druid cluster. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
