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https://issues.apache.org/jira/browse/CALCITE-3780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17199091#comment-17199091
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Vladimir Sitnikov commented on CALCITE-3780:
--------------------------------------------
[~amaliujia], I bumped into
{{org.apache.calcite.adapter.enumerable.EnumUtils.SessionizationEnumerator}}
and {{HopEnumerator}} by accident, and I have a couple review comments there:
1) {{LinkedList}} is almost never a right choice. {{ArrayList}} or
{{ArrayDequeue}} should work better in most cases: they consume less memory and
they work faster (they do not require wrapper nodes)
2) The list should be final
> SESSION Table-valued Function
> -----------------------------
>
> Key: CALCITE-3780
> URL: https://issues.apache.org/jira/browse/CALCITE-3780
> Project: Calcite
> Issue Type: Sub-task
> Reporter: Rui Wang
> Assignee: Rui Wang
> Priority: Major
> Fix For: 1.23.0
>
>
> We can create SESSION table-valued function to replace GROUP BY SESSION for
> inactive gap session functionality:
> {code:sql}
> SELECT *
> FROM TABLE SESSION (
> data => TABLE Bid ,
> timecol => DESCRIPTOR ( bidtime ) ,
> keycol => DESCRIPTOR(key),
> inactive_gap => INTERVAL '10' MINUTES )
> {code}
>
>
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