[ https://issues.apache.org/jira/browse/KAFKA-8315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16836606#comment-16836606 ]
Sophie Blee-Goldman commented on KAFKA-8315: -------------------------------------------- [~the4thamigo_uk] The code you're looking for describing the logic of choosing the next record to process is in org.apache.kafka.streams.processor.internals.PartitionGroup, which contains a priority queue "nonEmptyQueuesByTime" that serves up the partition with the lowest timestamp when polled (unless max.idle.ms has passed as checked in StreamTask#isProcessable) > Cannot pass Materialized into a join operation - hence cant set retention > period independent of grace > ----------------------------------------------------------------------------------------------------- > > Key: KAFKA-8315 > URL: https://issues.apache.org/jira/browse/KAFKA-8315 > Project: Kafka > Issue Type: Bug > Components: streams > Reporter: Andrew > Assignee: John Roesler > Priority: Major > Attachments: code.java > > > The documentation says to use `Materialized` not `JoinWindows.until()` > ([https://kafka.apache.org/22/javadoc/org/apache/kafka/streams/kstream/JoinWindows.html#until-long-]), > but there is no where to pass a `Materialized` instance to the join > operation, only to the group operation is supported it seems. > > Slack conversation here : > [https://confluentcommunity.slack.com/archives/C48AHTCUQ/p1556799561287300] > [Additional] > From what I understand, the retention period should be independent of the > grace period, so I think this is more than a documentation fix (see comments > below) -- This message was sent by Atlassian JIRA (v7.6.3#76005)