Chris Westin created DRILL-3874:
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Summary: flattening large JSON objects consumes too much direct
memory
Key: DRILL-3874
URL: https://issues.apache.org/jira/browse/DRILL-3874
Project: Apache Drill
Issue Type: Bug
Components: Execution - Data Types
Affects Versions: 1.1.0
Reporter: Chris Westin
Assignee: Chris Westin
A JSON record has a field whose value is an array with 20,000 elements; the
record's size is 4MB. A select is used to flatten this. The query profile
reports that the peak memory utilization was 8GB, most of it used by the
flatten.
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