Paul Rogers created DRILL-5291:
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Summary: Parquet Reader produces low density batches - variable
width fields
Key: DRILL-5291
URL: https://issues.apache.org/jira/browse/DRILL-5291
Project: Apache Drill
Issue Type: Bug
Reporter: Paul Rogers
Fix For: 1.8.0
See DRILL-5266 for background. That JIRA analyzed the problem with Parquet
producing "low density" record batches. That JIRA focused on the issue with
fixed-width fields: due to a bug, we overestimated the space taken.
Once that bug is fixed, Parquet continues to produce low density batches for
variable-width fields. DRILL-5266 explains why.
This ticket covers the variable-width case so that we don't lose sight of it
once the fixed-width case is fixed.
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