The topics in question are both changelogs for window stores. The retention period for them is calculated as the Window retention period, which is the value that is passed to `JoinWindows.until(...)` (default is 1 day) plus the value of the config StreamsConfig.WINDOW_STORE_CHANGE_LOG_ADDITIONAL_RETENTION_MS_CONFIG ( default is 1 day)
On Mon, 30 Oct 2017 at 12:49 Sameer Kumar <sam.kum.w...@gmail.com> wrote: > Hi, > > I have configured my settings to be the following:- > > log.retention.hours=3 > delete.topic.enable=true > delete.retention.ms=10800000 > min.cleanable.dirty.ratio=0.20 > segment.ms=180000 > > Howsoever, the changelog topic created as part of stream has the > rentention.ms to be 100800000, the source topic has it to be 3 hours. > > [root@dmpkafka6591 kafka-11-single]# bin/kafka-topics.sh --describe > --zookeeper 172.29.65.91:2181 --topic > c-7-aq7-KSTREAM-JOINOTHER-0000000019-store-changelog > Topic:c-7-aq7-KSTREAM-JOINOTHER-0000000019-store-changelog > PartitionCount:60 ReplicationFactor:1 Configs:retention.ms= > 100800000,cleanup.policy=delete,compact > > Can someone please explain this behavior. > > -Sameer. >
