nyingping created FLINK-28681:
---------------------------------
Summary: The number of windows allocated by sliding windows is
inaccurate, when the window length is irregular
Key: FLINK-28681
URL: https://issues.apache.org/jira/browse/FLINK-28681
Project: Flink
Issue Type: Improvement
Components: Table SQL / Runtime
Affects Versions: 1.15.1
Reporter: nyingping
In assignWindows, the initial length of the list of Windows is determined by
'(int) (size/slide)'.
{code:java}
List<TimeWindow> windows = new ArrayList<>((int) (size / slide)) {code}
This calculation is not accurate when the sliding window length is irregular.
For example, if the size is 10 and the slide is 3, '(int) (size/slide)' gives
3, but the final number of Windows is 4.
Although this does not affect functionality.But I think it would be better.
{code:java}
int len = (int) Math.ceil((double) (size / slide));
List windows = new ArrayList<>(len); {code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
