Paul Rogers created DRILL-7305: ---------------------------------- Summary: Multiple operators do not handle empty batches Key: DRILL-7305 URL: https://issues.apache.org/jira/browse/DRILL-7305 Project: Apache Drill Issue Type: Bug Affects Versions: 1.16.0 Reporter: Paul Rogers
While testing the new "EVF" framework, it was found that multiple operators incorrectly handle empty batches. The EVF framework is set up to return a "fast schema" empty batch with only schema as its first batch. It turns out that many operators fail with problems such as: * Failure to set the value counts in the output container * Fail to initialize the offset vector position 0 to 0 for variable-width or repeated vectors And so on. Partial fixes are in the JSON reader PR. For now, the easiest work-around is to disable the "fast schema" path in the EVF. -- This message was sent by Atlassian JIRA (v7.6.3#76005)