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Mark Shelton commented on KAFKA-10410: -------------------------------------- Yes using a Singleton would work, like I said in my first comment. But I'm not coding up a singleton unless I can avoid it. The metrics of the restore operation are only available in the StateRestoreCallback. Since StateRestoreCallback no longer receives the start/end/complete notification its the same problem. > OnRestoreStart disappeared from StateRestoreCallback in 2.6.0 and reappeared > in a useless place > ------------------------------------------------------------------------------------------------ > > Key: KAFKA-10410 > URL: https://issues.apache.org/jira/browse/KAFKA-10410 > Project: Kafka > Issue Type: Bug > Components: streams > Affects Versions: 2.6.0 > Reporter: Mark Shelton > Priority: Blocker > > In version 2.5.0 and earlier there are "onRestoreStart" and "onRestoreEnd" > methods on StateRestoreCallback. > Version 2.6.0 removed these calls and put them into StateRestoreListener and > requires "streaming.setGlobalStateRestoreListener". > This makes it impossible for the actual StateRestoreCallback implementation > to receive the start and end indication and is blocking me from moving to > 2.6.0. > See: > [https://kafka.apache.org/25/javadoc/index.html?org/apache/kafka/streams/processor/AbstractNotifyingRestoreCallback.html] > > Related JIRA: > https://issues.apache.org/jira/browse/KAFKA-4322 -- This message was sent by Atlassian Jira (v8.3.4#803005)