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https://issues.apache.org/jira/browse/CALCITE-6296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17866305#comment-17866305
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Alessandro Solimando commented on CALCITE-6296:
-----------------------------------------------
[~timgrein], thanks for your interest in the topic and welcome to Calcite!
Please mark the issue as "in progress" if you are actively working on it.
And at the same time, if the other Arrow improvements aren't both assigned and
marked as "in progress", you can safely assume nobody else it currently working
on it.
> Support IS NULL in Arrow adapter
> --------------------------------
>
> Key: CALCITE-6296
> URL: https://issues.apache.org/jira/browse/CALCITE-6296
> Project: Calcite
> Issue Type: Sub-task
> Components: arrow-adapter
> Reporter: hongyu guo
> Assignee: Tim Grein
> Priority: Major
> Labels: pull-request-available
>
> {code:sql}
> select "intField", "stringField"
> from arrowdata
> where "intField" is null
> {code}
> will throw an exception
> {code:java}
> java.lang.AssertionError: cannot translate IS NULL($0)
> at
> org.apache.calcite.adapter.arrow.ArrowTranslator.translateMatch2(ArrowTranslator.java:131)
> at
> org.apache.calcite.adapter.arrow.ArrowTranslator.translateAnd(ArrowTranslator.java:111)
> at
> org.apache.calcite.adapter.arrow.ArrowTranslator.translateMatch(ArrowTranslator.java:68)
> at
> org.apache.calcite.adapter.arrow.ArrowFilter.<init>(ArrowFilter.java:43)
> at
> org.apache.calcite.adapter.arrow.ArrowRules$ArrowFilterRule.convert(ArrowRules.java:97)
> at
> org.apache.calcite.adapter.arrow.ArrowRules$ArrowFilterRule.onMatch(ArrowRules.java:87)
> {code}
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