GitHub user Serhii-Harnyk opened a pull request:
https://github.com/apache/drill/pull/713
DRILL-3562: Query fails when using flatten on JSON data where some doâ¦
â¦cuments have an empty array
1. Added set for ListWriters tracking to keep empty arrays for further
initializing in ensureAtLeastOneField method.
2. Added check to avoid schema generating with field type "Late" and mode
"Optional", replaced it to "Int" type in FlattenRecordBatch class.
3. Added unit tests to cover cases querying Json with empty arrays with
flatten.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Serhii-Harnyk/drill DRILL-3562
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/713.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 #713
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commit 815de0cc6f16b247b3a655007241a074e38394c7
Author: Serhii-Harnyk <serhii.har...@gmail.com>
Date: 2016-12-20T16:55:41Z
DRILL-3562: Query fails when using flatten on JSON data where some
documents have an empty array
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