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https://issues.apache.org/jira/browse/HIVE-5623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran reassigned HIVE-5623:
-------------------------------------------
Assignee: Prasanth Jayachandran
> ORC accessing array column that's empty will fail with java out of bound
> exception
> ----------------------------------------------------------------------------------
>
> Key: HIVE-5623
> URL: https://issues.apache.org/jira/browse/HIVE-5623
> Project: Hive
> Issue Type: Bug
> Components: File Formats
> Affects Versions: 0.11.0
> Reporter: Eric Chu
> Assignee: Prasanth Jayachandran
> Priority: Critical
> Labels: orcfile
> Attachments: HIVE-5623.patch
>
>
> In our ORC tests we saw that queries that work on RCFile failed on the
> corresponding ORC version with Java IndexOutOfBoundsException in
> OrcStruct.java. The queries failed b/c the table has an array type column and
> there are rows with an empty array. We noticed that the getList(Object list,
> int i) method in OrcStruct.java simply returns the i-th element from list
> without checking if list is not null or if i is within valid range. After
> fixing that the queries run fine. The fix is really simple, but maybe there
> are other similar cases that need to be handled.
> The fix is to check if listObj is null and if i falls within range:
> public Object getListElement(Object listObj, int i) {
> if (listObj == null) {
> return null;
> }
> List list = ((List) listObj);
> if (i < 0 || i >= list.size()) {
> return null;
> }
> return list.get(i);
> }
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