Jark Wu created FLINK-7001: ------------------------------ Summary: Improve performance of Sliding Time Window with pane optimization Key: FLINK-7001 URL: https://issues.apache.org/jira/browse/FLINK-7001 Project: Flink Issue Type: Improvement Components: DataStream API Reporter: Jark Wu Assignee: Jark Wu Fix For: 1.4.0
Currently, the implementation of time-based sliding windows treats each window individually and replicates records to each window. For a window of 10 minute size that slides by 1 second the data is replicated 600 fold (10 minutes / 1 second). We can optimize sliding window by divide windows into panes (aligned with slide), so that we can avoid record duplication and leverage the checkpoint. I will attach a more detail design doc to the issue. The following issues are similar to this issue: FLINK-5387, FLINK-6990 -- This message was sent by Atlassian JIRA (v6.4.14#64029)