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https://issues.apache.org/jira/browse/DRILL-2464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14362603#comment-14362603
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Rahul Challapalli commented on DRILL-2464:
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Since drill cannot read null values from text files, I tried to read them hive
tables. Even in that case wasNull returned false. For varchar drill is
returning an empty string for null.
> JDBC : ResultSet.wasNull always returns false for all datatypes
> ---------------------------------------------------------------
>
> Key: DRILL-2464
> URL: https://issues.apache.org/jira/browse/DRILL-2464
> Project: Apache Drill
> Issue Type: Bug
> Components: Client - JDBC
> Reporter: Rahul Challapalli
> Assignee: Daniel Barclay (Drill)
> Attachments: fewtypes_null.parquet
>
>
> git.commit.id.abbrev=7b4c887
> I attached a parquet file which has nulls in it.
> {code}
> while (rs.next()) {
> rs.getLong(1);
> if (rs.wasNull()) {
> // DRILL does not come here even when the column value is null
> }
> }
> {code}
> I am not entirely sure if this is a duplicate to DRILL-2136. But here I have
> seen this happen for all data types.
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