[
https://issues.apache.org/jira/browse/HIVE-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul Yang updated HIVE-1011:
----------------------------
Status: Patch Available (was: Open)
> GenericUDTFExplode() throws NPE when given nulls
> ------------------------------------------------
>
> Key: HIVE-1011
> URL: https://issues.apache.org/jira/browse/HIVE-1011
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Paul Yang
> Assignee: Paul Yang
> Attachments: HIVE-1011.1.patch
>
>
> When explode() is called on rows where the array column is null, a null
> pointer exception is thrown.
> For example consider having a table named test with the following rows
> {code}
> key value
> 1 [1,2,3]
> 2 null
> {code}
> Then running the query
> {code}
> SELECT explode(value) AS myCol FROM test;
> or
> SELECT * FROM test LATERAL VIEW explode(value) myTab AS myCol;
> {code}
> will throw a null pointer exception when explode() gets the null value from
> the 2nd row.
> Possible options are:
> 1. Treat null values as an error and make the user fix null values in data
> 2. explode(null) generates a null output value.
> 3. explode(null) generates no output values
> #2 means that explode(null) and explode(array(null)) will behave identically.
> Because of that, I think #3 makes the most sense.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
