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https://issues.apache.org/jira/browse/FLINK-4282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15418609#comment-15418609
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Aljoscha Krettek commented on FLINK-4282:
-----------------------------------------
[~RenkaiGe] yes, this is more or less what I had in mind when opening this
issue. If you enforce that the offset obeys {{offset >= 0 && offset <= size}}
then I think you can change {{getWindowStartWithOffset(...)}} to this:
{code}
public static long getWindowStartWithOffset(long timestamp, long offset, long
windowSize) {
return timestamp - (timestamp - offset) % windowSize;
}
{code}
> Add Offset Parameter to WindowAssigners
> ---------------------------------------
>
> Key: FLINK-4282
> URL: https://issues.apache.org/jira/browse/FLINK-4282
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Reporter: Aljoscha Krettek
>
> Currently, windows are always aligned to EPOCH, which basically means days
> are aligned with GMT. This is somewhat problematic for people living in
> different timezones.
> And offset parameter would allow to adapt the window assigner to the timezone.
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