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[KAFKA-9200] ListOffsetRequest missing error response for v5 - Kafka - [issue]
...It seems ListOffsetResponse getErrorResponse is missing a a case for version 5. I'd have hoped that this kind of case would be picked up by ...    Author: Lucas Bradstreet , 2019-11-18, 03:23
[KAFKA-9193] org.apache.kafka.common.utils.Timer should use monotonic clock - Kafka - [issue]
...utils.Timer uses System.currentTimeMillis to implement blocking methods with timeouts. We should not rely on a non-monotonic clock and should instead switch this to Time.hiResClockMs() (whic...    Author: Lucas Bradstreet , 2019-11-14, 22:57
[DISCUSS] KIP-531: Drop support for Scala 2.11 in Kafka 2.5 - Kafka - [mail # dev]
...This would be great. Maintaining Scala 2.11 support is reasonably painful.Dropping support in 2.5 sounds good to me.On Thu, 7 Nov 2019 at 17:35, Ismael Juma  wrote:> Hi all,>> ...
   Author: Lucas Bradstreet , 2019-11-09, 02:25
[KAFKA-9137] Maintenance of FetchSession cache causing FETCH_SESSION_ID_NOT_FOUND in live sessions - Kafka - [issue]
...We have recently seen cases where brokers end up in a bad state where fetch session evictions occur at a high rate (> 16 per second) after a roll. This increase in eviction rate included ...    Author: Lucas Bradstreet , 2019-11-06, 01:27
[KAFKA-9048] Improve scalability in number of partitions in replica fetcher - Kafka - [issue]
... ( improves the performance of the replica fetcher (at both small and large numbers of partitions), ...    Author: Lucas Bradstreet , 2019-10-28, 14:57
[KAFKA-8125] Check for topic existence in CreateTopicsRequest prior to creating replica assignment - Kafka - [issue]
...Imagine the following pattern to ensure topic creation in an application: Attempt to create a topic with # partitions P and replication factor R.  If topic creation fails with TopicExistsExc...    Author: Lucas Bradstreet , 2019-10-16, 01:14
[DISCUSS] KIP-526: Reduce Producer Metadata Lookups for Large Number of Topics - Kafka - [mail # dev]
...Hi Brian,This looks great, and should help reduce blocking and high metadata requestvolumes when the producer is sending to large numbers of topics, especiallyat low volumes. I think the app...
   Author: Lucas Bradstreet , 2019-10-04, 01:51
[KAFKA-8963] Benchmark and optimize incremental fetch session handler - Kafka - [issue]
...The FetchSessionHandler is a cause of high CPU usage in the replica fetcher for brokers with high partition counts. A jmh benchmark should be added and the incremental fetch session handling...    Author: Lucas Bradstreet , 2019-09-30, 18:08
[KAFKA-8899] Optimize Partition.maybeIncrementLeaderHW - Kafka - [issue]
...Partition.maybeIncrementLeaderHW is in the hot path for ReplicaManager.updateFollowerFetchState. When replicating between brokers with high partition counts, maybeIncrementLeaderHW becomes e...    Author: Lucas Bradstreet , 2019-09-12, 23:17
[DISCUSS] KIP-516: Topic Identifiers - Kafka - [mail # dev]
...Hi all,I would like to kick off discussion of KIP-516, an implementation of topicIDs for Kafka. Topic IDs aim to solve topic uniqueness problems in Kafka,where referring to a topic by name a...
   Author: Lucas Bradstreet , 2019-09-04, 18:41