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${ noResults }
src-kafka/checkstyle
Ben Stopford
0baea2ac13
This PR replaces https://github.com/apache/kafka/pull/2743 (just raising from Confluent repo) This PR describes the addition of Partition Level Leader Epochs to messages in Kafka as a mechanism for fixing some known issues in the replication protocol. Full details can be found here: [KIP-101 Reference](https://cwiki.apache.org/confluence/display/KAFKA/KIP-101+-+Alter+Replication+Protocol+to+use+Leader+Epoch+rather+than+High+Watermark+for+Truncation) *The key elements are*: - Epochs are stamped on messages as they enter the leader. - Epochs are tracked in both leader and follower in a new checkpoint file. - A new API allows followers to retrieve the leader's latest offset for a particular epoch. - The logic for truncating the log, when a replica becomes a follower, has been moved from Partition into the ReplicaFetcherThread - When partitions are added to the ReplicaFetcherThread they are added in an initialising state. Initialising partitions request leader epochs and then truncate their logs appropriately. This test provides a good overview of the workflow `EpochDrivenReplicationProtocolAcceptanceTest.shouldFollowLeaderEpochBasicWorkflow()` The corrupted log use case is covered by the test `EpochDrivenReplicationProtocolAcceptanceTest.offsetsShouldNotGoBackwards()` Remaining work: There is a do list here: https://docs.google.com/document/d/1edmMo70MfHEZH9x38OQfTWsHr7UGTvg-NOxeFhOeRew/edit?usp=sharing Author: Ben Stopford <benstopford@gmail.com> Author: Jun Rao <junrao@gmail.com> Reviewers: Ismael Juma <ismael@juma.me.uk>, Jun Rao <junrao@gmail.com> Closes #2808 from benstopford/kip-101-v2 |
8 years ago | |
|---|---|---|
| .. | ||
| checkstyle.xml | KAFKA-4817; Add idempotent producer semantics | 8 years ago |
| import-control-core.xml | KAFKA-4008: Module "tools" should not be dependent on "core" | 8 years ago |
| import-control.xml | KAFKA-4816; Message format changes for idempotent/transactional producer (KIP-98) | 8 years ago |
| java.header | MINOR: improve license header check by providing head file instead of (prefix) header regex | 8 years ago |
| suppressions.xml | KIP-101: Alter Replication Protocol to use Leader Epoch rather than High Watermark for Truncation | 8 years ago |