Where can I find the usage of CheckpointedFunction? And I found the ckeckpoint problem in the following issue:
https://issues.apache.org/jira/browse/FLINK-5221 -----邮件原件----- 发件人: Aljoscha Krettek (JIRA) [mailto:j...@apache.org] 发送时间: 2016年12月5日 8:11 收件人: dev@flink.apache.org 主题: [jira] [Created] (FLINK-5250) Make AbstractUdfStreamOperator aware of WrappingFunction Aljoscha Krettek created FLINK-5250: --------------------------------------- Summary: Make AbstractUdfStreamOperator aware of WrappingFunction Key: FLINK-5250 URL: https://issues.apache.org/jira/browse/FLINK-5250 Project: Flink Issue Type: Improvement Components: Streaming Reporter: Aljoscha Krettek Right now, when using a {{WrappingFunction}}, as happens for {{WindowFunction}} and also for some functions in the Scala API then using custom interfaces is not possible. These custom interfaces are, for example, the checkpointing functions such as {{ListCheckpointed}} and {{CheckpointedFunction}}. We should teach {{AbstractUdfStreamOperator}} about {{WrapingFunction}} so that it can correctly handle the case where wrapped user functions implement on of these interfaces. Also, in the Scala API we have some custom functions that mimic {{WrappingFunction}} behaviour. These should be moved to use {{WrappingFunction}}, if possible. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
