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https://issues.apache.org/jira/browse/FLINK-34066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruan Hang updated FLINK-34066:
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Fix Version/s: 2.3.0
(was: 2.2.0)
> LagFunction throw NPE when input argument are not null
> ------------------------------------------------------
>
> Key: FLINK-34066
> URL: https://issues.apache.org/jira/browse/FLINK-34066
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 2.1.0
> Reporter: Yunhong Zheng
> Assignee: Yunhong Zheng
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.3.0
>
>
> This issue is related to https://issues.apache.org/jira/browse/FLINK-31967.
> In FLINK-31967, the NPE error has not been thoroughly fixed. If the select
> value LAG(len, 1, cast(null as int)) and LAG(len, 1, 1) exists together in
> test case AggregateITCase.testLagAggFunction() as:
> {code:java}
> val sql =
> s"""
> |select
> | LAG(len, 1, cast(null as int)) OVER w AS nullable_prev_quantity,
> | LAG(len, 1, 1) OVER w AS prev_quantity,
> | LAG(len) OVER w AS prev_quantity
> |from src
> |WINDOW w AS (ORDER BY proctime)
> |""".stripMargin {code}
> before is:
> {code:java}
> val sql =
> s"""
> |select
> | LAG(len, 1, cast(null as int)) OVER w AS prev_quantity,
> | LAG(len) OVER w AS prev_quantity
> |from src
> |WINDOW w AS (ORDER BY proctime)
> |""".stripMargin {code}
> NPE will throw.
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