Changelog¶

Version 4.0.0¶

Fixed an issue that could cause long request times if a cluster had brokers with noncontiguous ids
Additional logging during startup
Fixed an issue that could cause Control Center to show blank graphs when data was present
Set and enforce TimestampType for internal Control Center topics at startup
Fixed an issue that caused us to link to an invalid consumer group on Streams Monitoring
Fixed an issue where Broker Monitoring could check for data last update time on wrong cluster
Allow overriding ConfluentMetricsReporter default producer settings
Allow using a file for confluent.license config
Docker image: allow passing license using CONTROL_CENTER_CONFLUENT_LICENSE environment variable
Fixed an issue that resulted in Offline and Under Replicated Partitions data to be swapped
Fixed an issue that could cause Control Center to shutdown if it lost connection to Kafka
Fixed an issue that could cause Control Center to hang if it encountered an error creating topics on startup

Allow text input in date picker
Fixed an issue that could cause unsubmittable forms
Show renamed cluster value rather than base clusterid on alerts page
Added alert banner on Broker Monitoring to indicate a cluster may be down
Scalability increase for Broker Monitoring to reduce number of messages sent to Kafka
Fixed an issue where we would show 100% Network Pool Usage instead of 0%
Allow graceful shutdown of Control Center during startup
Fixed a race condition that could happen if you start Control Center and your Kafka broker at the same time

Sped up restore time
Reduced the size of old data over long periods of time
Upgraded to use new admin client (KIP-117)
Alert UI should render better alert information
Triggers are createable directly though the UI on System Health
Massive performance improvements to Stream Monitoring UI
Fixed various time range display/selection bugs; persist time ranges though navigation
Nonconfigurable form values being sent to Connect via UI should remain and be visible prior to submit

Added shutdown script.
Force faster compaction and cleanup on changelog topics.
Several Streams improvements to reduce state-store restoration time after unclean shutdown.
Reduce the volume of data to be restored to state-stores on startup.
Fixed possible concurrency problem in setting RocksDB configuration options.
Fixed possible deadlock on exception after streams startup.

Enabled HTTP compression by default.
Fixed possible deadlock on streams exception.
Fixed fd leak when communicating with Kafka.
Update defaults for monitoring producers to be more resilient.
Prevent inadvertently creating misconfigured topics during startup during a failure.
Check Kafka version at startup.
Reduce minimum startup time.
More efficient duplicate checking to reduce write amplification.
Handle ‘hidden’ connect configs. This allows Control Center to manage Connectors that do not fully enumerate their configs.
Ensure users only see invalid license warning if their license is invalid.
Fixed topic display bug that would prevent topic details from showing.
Reduced logging in js.
Allow users to close missing data modal dialogs.
Better rendering of System Health metrics especially when some data is missing.
Better validation of triggers, actions, and connector configs.
Faster processing of trigger and action creation and update.
Corrected some misleading labels on System Health.
Better error handling around Connect communications.
Change default timespan in UI to 4 hours.
Check and warn about errors on Topic Management page.

Add capabilities to monitor brokers instrumented with Confluent Metrics Reporter.
Enable alerting on broker and topic metrics.
Add UI for viewing topic information.
Add status UI for tracking internal progress.
Fixed bug where we could inadvertently show license expired message.
Fixed bugs with alert trigger creation in UI.
Fixed issue with parsing certain error conditions from Connect.