Github user Serhii-Harnyk commented on a diff in the pull request:
https://github.com/apache/drill/pull/594#discussion_r92478836
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java
---
@@ -510,10 +517,13 @@ private void writeDataAllText(MapWriter map,
FieldSelection selection,
case VALUE_NUMBER_FLOAT:
case VALUE_NUMBER_INT:
case VALUE_STRING:
+ removeNotNullColumn(fieldName);
--- End diff --
To clean 'path' if it knows it is recovering from some errors, was added
this line:
https://github.com/Serhii-Harnyk/drill/blob/9ce6d56b46bcd540697c85cd2f280831dd50b277/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/JsonReader.java#L243.
Call of the method removeNotNullColumn() is a try to optimize the final size
of the map fieldPathWriter, by removing fields, which were added to the map and
initializing at current iteration.
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