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https://issues.apache.org/jira/browse/ASTERIXDB-2452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Luo resolved ASTERIXDB-2452.
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Resolution: Fixed
> ListifyUnnestingFunctionRule didn't recompute type environment properly after
> firing
> ------------------------------------------------------------------------------------
>
> Key: ASTERIXDB-2452
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2452
> Project: Apache AsterixDB
> Issue Type: Bug
> Reporter: Chen Luo
> Assignee: Chen Luo
> Priority: Major
>
> The following query trigger a NPE during query optimization
> {code}
> set import-private-functions 'true'
> let $nullstring := [null, null, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
> let $prefix1 := subset-collection($nullstring, 0,
> prefix-len-jaccard(len($nullstring), 0.1f))
> let $prefix4 := subset-collection($nullstring, 0,
> prefix-len-jaccard(len($nullstring), 0.4f))
> let $joinpair :=
> for $s in $prefix4
> for $r in $prefix1
> where $s = $r
> return $s
> return [$joinpair]
> {code}
> The problem is that after ListifyUnnestingFunctionRule is fired, the parent
> operator's type environment is not recomputed, and thus it still points to
> the old operator.
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