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https://issues.apache.org/jira/browse/HIVE-20827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16667854#comment-16667854
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ASF GitHub Bot commented on HIVE-20827:
---------------------------------------
GitHub user pudidic opened a pull request:
https://github.com/apache/hive/pull/480
HIVE-20827: Inconsistent results for empty arrays (Teddy Choi)
Signed-off-by: Teddy Choi <[email protected]>
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pudidic/hive HIVE-20827
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/hive/pull/480.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #480
----
commit 7b4ef6676dcc103d6149eda0365541cb3ba8cabd
Author: Teddy Choi <pudidic@...>
Date: 2018-10-29T22:47:14Z
HIVE-20827: Inconsistent results for empty arrays (Teddy Choi)
Signed-off-by: Teddy Choi <[email protected]>
----
> 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
> Labels: pull-request-available
> 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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