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https://issues.apache.org/jira/browse/HIVE-20827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Teddy Choi updated HIVE-20827:
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Attachment: HIVE-20827.1.patch
> Inconsistent results for empty arrays
> -------------------------------------
>
> Key: HIVE-20827
> URL: https://issues.apache.org/jira/browse/HIVE-20827
> Project: Hive
> Issue Type: Bug
> Reporter: Teddy Choi
> Assignee: Teddy Choi
> Priority: Major
> Attachments: HIVE-20827.1.patch
>
>
> LazySimpleDeserializeRead parses an empty array wrong. For example, a line
> ',' in a text file table with a delimiter ',' and schema 'array<int>,
> array<array<string>>' shows \[null\], \[\[""\]\], instead of \[\], \[\] with
> MapReduce engine and vectorized execution enabled. LazySimpleDeserializeRead
> has following code;
> {code:java}
> switch (complexField.complexCategory) {
> case LIST:
> {
> // Allow for empty string, etc.
> final boolean isNext = (fieldPosition <= complexFieldEnd);
> {code}
> Empty string value read should be only applied to string families, not to
> other data types.
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