GitHub user Indhumathi27 opened a pull request:
https://github.com/apache/carbondata/pull/2489
[CARBONDATA-2606][Complex DataType Enhancements]Fix Null result if First
two Projection column have same parent and third column has different Parent
Struct
Problem:
When multiple columns are there,then the first child elements is only
going to make parent Object Array. For all other cases it should be null.
For e.g. a : <b,c,d>. here as 'a' is the parent column and b, c, d are
child columns during traversal when we encounter the first element in list i.e.
column 'b','a' will be completely filled. In case when column 'c' and 'd'
encountered then only place null in the output.
Hence, as Null is placed in the output, Select result is Null if First two
Projection column have same parent and third column has different parent Struct
column.
Solution: Place null in the end of output
- [ ] Any interfaces changed?
- [ ] Any backward compatibility impacted?
- [ ] Document update required?
- [x] Testing done
Test cases added
- [ ] For large changes, please consider breaking it into sub-tasks under
an umbrella JIRA.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Indhumathi27/carbondata project2struct
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/2489.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 #2489
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commit be3008224f100d6e046987ab4c56792976d6c3a4
Author: Indhumathi27 <indhumathim27@...>
Date: 2018-07-11T10:24:55Z
[CARBONDATA-2606][Complex DataType Enhancements]Fix Null result when there
are two Struct Column
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