Paul Rogers created DRILL-7311:
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Summary: Partial fixes for empty batch bugs
Key: DRILL-7311
URL: https://issues.apache.org/jira/browse/DRILL-7311
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.16.0
Reporter: Paul Rogers
Assignee: Paul Rogers
Fix For: 1.17.0
DRILL-7305 explains that multiple operators have serious bugs when presented
with empty batches. DRILL-7306 explains that the EVF (AKA "new scan framework")
was originally coded to emit an empty "fast schema" batch, but that the feature
was disabled because of the many empty-batch operator failures.
This ticket covers a set of partial fixes for empty-batch issues. This is the
result of work done to get the converted JSON reader to work with a "fast
schema." The JSON work, in the end, revealed that Drill has too many bugs to
enable fast schema, and so the DRILL-7306 was implemented instead.
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