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Release Dates

  • KIP Freeze: Sep 24, 2018 (a KIP must be accepted by this date in order to be considered for this release)
  • Feature Freeze: Oct 1, 2018 (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: Oct 15, 2018 (Tentatively)
  • Release: Oct 29, 2018 (Tentatively)


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 Dong Lin.

Release Features

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

  • Improvements of log truncation handling to reduce message duplication and message loss (KIP-320, KIP-359)
  • Add support for Custom SASL extensions in OAuthBearer authentication (KIP-342)
  • Avoid duplicate message consumption for consumer group that uses Sticky Assignor (KIP-341)
  • Admin script and admin client API improvements to simplify admin operation (KIP-231, KIP-308, KIP-322, KIP-324, KIP-338, KIP-340)
  • Streams API improvements (KIP-149, KIP-150, KIP-319, KIP-321, KIP-328, KIP-330, KIP-353, KIP-356)
  • Avoid expiring committed offsets for active consumer group (KIP-211)
  • Provide Intuitive User Timeouts in The Producer (KIP-91)

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 unit/integration/system tests. We want to preserve the tradition of high-quality releases in Apache Kafka. 

After code freeze:

  • Write more unit/integration/system testsWe want to preserve the tradition of high-quality releases in Apache Kafka.
  • Improve documentation
  • Test the release candidates
  • Open blocker JIRAs on critical issues found. Open non-blocker JIRAs on any other issues found.
  • Fix critical 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

Also feel free to refer to this release page for more details of the included tickets.

Planned KIP Content

Note: The planned content is not binding - final content will be based the features committed by branch-cutting date. See Kafka Improvement Proposals for the full list of KIPs.

KIPJIRAComponentCommitter (reviewer)

KIP-91 Provide Intuitive User Timeouts in The Producer

Unable to render Jira issues macro, execution error.

Clients
KIP-149: Enabling key access in ValueTransformer, ValueMapper, and ValueJoiner

Unable to render Jira issues macro, execution error.

Streams
KIP-150 - Kafka-Streams Cogroup

Unable to render Jira issues macro, execution error.

Streams

KIP-206: Add support for UUID serialization and deserialization

Unable to render Jira issues macro, execution error.

Clients
KIP-211: Revise Expiration Semantics of Consumer Group Offsets

Unable to render Jira issues macro, execution error.

Broker,Clients
KIP-231: Improve the Required ACL of ListGroups API

Unable to render Jira issues macro, execution error.

Security
KIP-289: Improve the default group id behavior in KafkaConsumer

Unable to render Jira issues macro, execution error.

Clients
KIP-306: Configuration for Delaying Response to Failed Client Authentication

Unable to render Jira issues macro, execution error.

Client
KIP-308: Support dynamic update of max.connections.per.ip/max.connections.per.ip.overrides configs

Unable to render Jira issues macro, execution error.

Broker
KIP-319: Replace segments with segmentInterval in WindowBytesStoreSupplier

Unable to render Jira issues macro, execution error.

Streams
KIP-320: Allow fetchers to detect and handle log truncation

Unable to render Jira issues macro, execution error.

Broker,Clients
KIP-321: Update TopologyDescription to better represent Source and Sink Nodes

Unable to render Jira issues macro, execution error.

Streams
KIP-322: Return new error code for DeleteTopics API when topic deletion disabled

Unable to render Jira issues macro, execution error.

Tools
KIP-324: Add method to get metrics() in AdminClient

Unable to render Jira issues macro, execution error.

AdminClient
KIP-328: Ability to suppress updates for KTables

Unable to render Jira issues macro, execution error.

Streams
KIP-330: Add retentionPeriod in SessionBytesStoreSupplier

Unable to render Jira issues macro, execution error.

Streams
KIP-332: Update AclCommand to use AdminClient API

Unable to render Jira issues macro, execution error.

Tools
KIP-336: Consolidate ExtendedSerializer/Serializer and ExtendedDeserializer/Deserializer

Unable to render Jira issues macro, execution error.

Clients
KIP-340: Allow kafka-reassign-partitions.sh and kafka-log-dirs.sh to take admin client property file

Unable to render Jira issues macro, execution error.

Tools
KIP-341: Update Sticky Assignor's User Data Protocol

Unable to render Jira issues macro, execution error.

Clients
KIP-342: Add support for Custom SASL extensions in OAuthBearer authentication

Unable to render Jira issues macro, execution error.

Security
KIP-353: Improve Kafka Streams Timestamp Synchronization

Unable to render Jira issues macro, execution error.

Streams
KIP-356: Add withCachingDisabled() to StoreBuilder

Unable to render Jira issues macro, execution error.

StreamsMatthias Sax
KIP-359: Verify leader epoch in produce requests

Unable to render Jira issues macro, execution error.

Broker,Clients

 

Postponed to subsequent release

 

KIPJIRAComponentCommitter




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