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- KIP Freeze: Jan 22, 2020 (a KIP must be accepted by this date in order to be considered for this release)
- Feature Freeze: Jan 29, 2020 (major features merged & working on stabilization, minor features have PR, release branch cut; anything not in this state will be automatically moved to the next release in JIRA)
- Code Freeze: Feb 12, 2020
Release: Feb 26, 2020 TBD
These dates are goals and subject to change, but we expect to stay on the Time Based Release Plan unless unexpected critical issues come up. While the target release date is fixed at ~2w after code freeze, RCs will roll out as needed until the release vote passes.
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The release manager is David Arthur.
Planned KIPs
158: Kafka Connect should allow source connectors to set topic-specific settings for new topics5295| Connect | KIP-216: IQ should throw different exceptions for different errors| Jira |
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| server | ASF JIRA |
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| serverId | 5aa69414-a9e9-3523-82ec-879b028fb15b |
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| key | KAFKA- |
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5876Streams | KIP-280: Enhanced log compaction| Jira |
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| server | ASF JIRA |
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| serverId | 5aa69414-a9e9-3523-82ec-879b028fb15b |
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| key | KAFKA- |
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7061352: Distinguish URPs caused by reassignment8834-90598835Core360: Improve handling of unknown producer8710/Clients396: Add Reset/List Offsets Operations to AdminClient7689399: Extend ProductionExceptionHandler to cover serialization exceptions7499Streams401: TransformerSupplier/ProcessorSupplier StateStore connecting7523444: Augment metrics for Kafka Streams (some parts in 2.4, some TBD)6819Streams447 scalability for exactly once semantics (partial)8587Streams455: Create an Administrative API for Replica Reassignment8345Core467: Augment ProduceResponse error messaging for specific culprit records8729Core/Clients511: Collect and Expose Client's Name and Version in the Brokers (new metrics)8855/Clients514: Add a bounded flush() API to Kafka Producer7711Clients515: Enable ZK client to use the new TLS supported authentication8843523 KStream#toTable to the Streams DSL7658Streams524: Allow users to choose config source when describing configs9040526: Reduce Producer Metadata Lookups for Large Number of Topics8904Clients527: Add VoidSerde to Serdes8455Streams530: Consider renaming 'UsePreviousTimeOnInvalidTimeStamp' class to 'UsePartitionTimeOnInvalidTimeStamp'8953Streams531: Drop support for Scala 2.11 in Kafka 2.59324Core535: Allow state stores to serve stale reads during rebalance6144Streams537: Increase default zookeeper session timeout9102
Postponed KIPs
Core538: Add a metric tracking the number of open connections with a given SSL cipher type9091Core541: Create a fetch.max.bytes configuration for the broker9101Core543: Expand ConfigCommand's non-ZK functionality9082544: Make metrics exposed via JMX configurable9106Core551: Expose disk read and write metrics9292Core553: Disable all SSL protocols except TLSV1.2 by default.9460Core555: Deprecate Direct Zookeeper access in Kafka Administrative Tools9397558: Track the set of actively used topics by connectors in Kafka Connect9422Connect559 the Kafka Protocol Friendlier with L7 Proxies9437562: Allow fetching a key from a single partition rather than iterating over all the stores on an instance9445| Streams | Postponed KIPs
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How to Contribute
Before code freeze:
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| Jira |
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| server | ASF JIRA |
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| columns | key,priority,summary,type,assignee,status,created,updated,due,assignee,reporter,priority,status,resolution |
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| maximumIssues | 20 |
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| jqlQuery | project = KAFKA AND fixVersion = 2.5.0 AND status not in (resolved, closed) ORDER BY priority DESC, status DESC, updated DESC |
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| serverId | 5aa69414-a9e9-3523-82ec-879b028fb15b |
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