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https://issues.apache.org/jira/browse/CALCITE-6296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17866289#comment-17866289
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Tim Grein commented on CALCITE-6296:
------------------------------------
Cool, thanks! Opened a PR [~hongyuguo], if you want to take a look. If this
looks good I can also take a pass at some of the other Arrow Adapter
improvements.
> 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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