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Release Dates

  • KIP Freeze: May 10, 2017 (a KIP must be accepted by this date in order to be considered for this release)
  • Feature Freeze: May 17, 2017 (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: May 31, 2017 (first RC created now)
  • Release: June 14, 2017 

Release Manager
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.

The release manager is Ismael Juma Juma.

Release Features

This is a list of key features/improvements/bugfixes that we can include with release notes (WIP):

  • Exactly-once delivery and transactional messaging
  • Streams exactly-once semantics
  • AdminClient
  • Record headers
  • Request rate quotas
  • Improved resiliency: replication protocol improvement and single-threaded controller

How to Contribute

Before code freeze:

  • Participate in votes and discussions to land or postpone the open KIPs
  • Review patches. We anticipate that this release will be bottlenecked mostly on reviews. The more reviewers, the more content we can fit in.
  • Write system tests. We want to preserve the tradition of high-quality releases in Apache Kafka. 

After code freeze:

  • Test the release candidates
  • Open bugs on important issues found
  • Fix bugs
  • Review bug fixes
  • Vote on RCs. Even though only PMC votes are binding, community votes are super important as we evaluate the readiness of the release

Open Issues

key summary type created updated due assignee reporter priority status resolution

JQL and issue key arguments for this macro require at least one Jira application link to be configured

Planned KIP Content

Note: The planned content is not binding - final content will be based the features committed by branch-cutting date.

KIPJIRAComponentCommitter
KIP-48 Delegation token support for Kafka Unable to render Jira issues macro, execution error. SecurityTBD
KIP-54: Sticky Partition Assignment Strategy Unable to render Jira issues macro, execution error. ConsumerJason Gustafson
KIP-72: Allow putting a bound on memory consumed by Incoming request  Unable to render Jira issues macro, execution error. NetworkJun Rao
KIP-81: Bound Fetch memory usage in the consumer Unable to render Jira issues macro, execution error. ConsumerTBD
KIP-82 - Add Record Headers Unable to render Jira issues macro, execution error. MultipleJason Gustafson
KIP-98 - Exactly Once Delivery and Transactional Messaging

Unable to render Jira issues macro, execution error.

Unable to render Jira issues macro, execution error.

Unable to render Jira issues macro, execution error.

Unable to render Jira issues macro, execution error.

Multipleguozhang Wang, Jason Gustafson, Jun Rao, Ismael Juma Juma
KIP-101 - Alter Replication Protocol to use Leader Epoch rather than High Watermark for Truncation

Unable to render Jira issues macro, execution error.

Unable to render Jira issues macro, execution error.

ReplicationJun Rao

KIP-106 - Change Default unclean.leader.election.enabled from True to False

Unable to render Jira issues macro, execution error. ControllerIsmael Juma Juma
KIP-107: Add purgeDataBefore() API in AdminClient Unable to render Jira issues macro, execution error. MultipleJiangjie Qin
KIP-109: Old Consumer Deprecation Unable to render Jira issues macro, execution error. ConsumerIsmael Juma Juma
KIP-112: Handle disk failure for JBOD Unable to render Jira issues macro, execution error. Broker 
KIP-114: KTable state stores and improved semantics Unable to render Jira issues macro, execution error. Streamsguozhang Wang
KIP-115: Enforce offsets.topic.replication.factor upon __consumer_offsets auto topic creation Unable to render Jira issues macro, execution error. Request handlingEwen Cheslack-Postava
KIP-117: Add a public AdminClient API for Kafka admin operations Unable to render Jira issues macro, execution error. Admin ClientIsmael Juma Juma
KIP-119: Drop Support for Scala 2.10 in Kafka 0.11 Unable to render Jira issues macro, execution error. BuildEwen Cheslack-Postava
KIP-121: Add KStream peek method Unable to render Jira issues macro, execution error. Streamsguozhang Wang
KIP-122: Add Reset Consumer Group Offsets tooling Unable to render Jira issues macro, execution error. ToolsJason Gustafson
KIP-123: Allow per stream/table timestamp extractor Unable to render Jira issues macro, execution error. Streamsguozhang Wang
KIP-124 - Request rate quotas Unable to render Jira issues macro, execution error. BrokerJun Rao
KIP-126 - Allow KafkaProducer to split and resend oversized batches. Unable to render Jira issues macro, execution error. ClientsTBD
KIP-128: Add ByteArrayConverter for Kafka Connect Unable to render Jira issues macro, execution error. ConnectEwen Cheslack-Postava
KIP-129: Streams Exactly-Once Semantics

Unable to render Jira issues macro, execution error.

Unable to render Jira issues macro, execution error.

Streamsguozhang Wang
KIP-134: Delay initial consumer group rebalance Unable to render Jira issues macro, execution error. Group Coordinatorguozhang Wang
KIP-136: Add Listener name and Security Protocol name to SelectorMetrics tags Unable to render Jira issues macro, execution error. MetricsIsmael Juma Juma
KIP-137: Enhance TopicCommand --describe to show topics marked for deletion Unable to render Jira issues macro, execution error. ToolsIsmael Juma Juma
KIP-140: Add administrative RPCs for adding, deleting, and listing ACLs Unable to render Jira issues macro, execution error. AdminClientIsmael Juma Juma
KIP-143: Controller Health Metrics Unable to render Jira issues macro, execution error. ControllerJun Rao
KIP-144: Exponential backoff for broker reconnect attempts Unable to render Jira issues macro, execution error. ClientsIsmael Juma Juma
KIP-153: Include only client traffic in BytesOutPerSec metric Unable to render Jira issues macro, execution error. MetricsIsmael Juma Juma

See Kafka Improvement Proposals for the full list of KIPs.

KIPs Bumped to Next Release

KIPJIRAComponentCommitter
KIP-118: Drop Support for Java 7 in Kafka 0.11 Unable to render Jira issues macro, execution error. BuildJason Gustafson
KIP-120: Cleanup Kafka Streams builder API Unable to render Jira issues macro, execution error. Streamsguozhang Wang
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