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src-kafka/core
David Arthur
339d2556c6
This patch adds reconciliation logic to migrating ZK brokers to deal with pending topic deletions as well as missed StopReplicas. During the hybrid mode of the ZK migration, the KRaft controller is asynchronously sending UMR and LISR to the ZK brokers to propagate metadata. Since this process is essentially "best effort" it is possible for a broker to miss a StopReplicas. The new logic lets the ZK broker examine its local logs compared with the full set of replicas in a "Full" LISR. Any local logs which are not present in the set of replicas in the request are removed from ReplicaManager and marked as "stray". To avoid inadvertent data loss with this new behavior, the brokers do not delete the "stray" partitions. They will rename the directories and log warning messages during log recovery. It will be up to the operator to manually delete the stray partitions. We can possibly enhance this in the future to clean up old stray logs. This patch makes use of the previously unused Type field on LeaderAndIsrRequest. This was added as part of KIP-516 but never implemented. Since its introduction, an implicit 0 was sent in all LISR. The KRaft controller will now send a value of 2 to indicate a full LISR (as specified by the KIP). The presence of this value acts as a trigger for the ZK broker to perform the log reconciliation. Reviewers: Colin P. McCabe <cmccabe@apache.org> |
11 months ago | |
|---|---|---|
| .. | ||
| src | KAFKA-15605: Fix topic deletion handling during ZK migration (#14545) | 11 months ago |
| .gitignore | KAFKA-4848: Fix retryWithBackoff deadlock issue | 8 years ago |