Migration from Luna Streaming 2.10

Upgrading to Luna Streaming 3.1 should only be done from Luna Streaming 2.10.
Upgrade is fully supported for all the components (connectors included).
Prometheus client version has been changed from 0.5.0 to 0.16.0. Metric type UNTYPED is renamed to UNKNOWN. The metrics have been renamed because OpenMetrics’s counter name needs a _total suffix.
- Renamed Metrics:

Before

After

pulsar_expired_token_count

pulsar_expired_token_total

pulsar_authentication_success_count

pulsar_authentication_success_total

pulsar_authentication_failures_count

pulsar_authentication_failures_total

pulsar_source_received_total_1min

pulsar_source_received_1min_total

pulsar_source_written_total_1min

pulsar_source_written_1min_total

pulsar_source_source_total_1min

pulsar_source_source_exceptions_1min_total

pulsar_source_system_exceptions_total_1min

pulsar_source_system_exceptions_1min_total

pulsar_function_received_total_1min

pulsar_function_received_1min_total

pulsar_function_user_exceptions_total_1min

pulsar_function_user_exceptions_1min_total

pulsar_function_system_exceptions_total_1min

pulsar_function_system_exceptions_1min_total

pulsar_function_processed_successfully_total_1min

pulsar_function_processed_successfully_1min_total

pulsar_sink_received_total_1min

pulsar_sink_received_1min_total

pulsar_sink_written_total_1min

pulsar_sink_written_1min_total

pulsar_sink_sink_exceptions_total_1min

pulsar_sink_sink_exceptions_1min_total

pulsar_sink_system_exceptions_total_1min

pulsar_sink_system_exceptions_1min_total

pulsar_lb_unload_broker_count

pulsar_lb_unload_broker_total

pulsar_lb_unload_bundle_count

pulsar_lb_unload_bundle_total

pulsar_lb_bundles_split_count

pulsar_lb_bundles_split_total

pulsar_schema_del_ops_failed_count

pulsar_schema_del_ops_failed_total

pulsar_schema_get_ops_failed_count

pulsar_schema_get_ops_failed_total

pulsar_schema_put_ops_failed_count

pulsar_schema_put_ops_failed_total

pulsar_schema_compatible_count

pulsar_schema_compatible_total

pulsar_schema_incompatible_count

pulsar_schema_incompatible_total

pulsar_txn_committed_count

pulsar_txn_committed_total

pulsar_txn_aborted_count

pulsar_txn_aborted_total

pulsar_txn_created_count

pulsar_txn_created_total

pulsar_txn_timeout_count

pulsar_txn_timeout_total

pulsar_txn_append_log_count

pulsar_txn_append_log_total

Downgrade is not supported for Bookies and ZooKeeper. All other components such as Broker, Proxy and Functions Worker can be downgraded at any time.
- Pulsar 3.1 uses RocksDB 7.x which writes in a format that is not compatible with RocksDB 6.x which is used by LunaStreaming 2.10 via Bookkeeper 4.14.
- Reference Issue - (Bug) Downgrade issue #22051 - apache/pulsar · GitHub

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