David Severski created DRILL-7518:
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Summary: Parquet INT64 Nullable Type Support
Key: DRILL-7518
URL: https://issues.apache.org/jira/browse/DRILL-7518
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.17.0
Environment: Tested on the apache/drill:1.17.0 docker image.
Reporter: David Severski
Querying a parquet file with fields of type INT64 generates an immediate error
in the complex parquet reader with an error of "Unsupported nullable converted
type INT_64 for primitive type INT64". Attempts to work around this via
explicit CAST() and CONVERT_FROM() are unsuccessful. The suggestion from
drill-users is that an implementation needs to be made at
https://github.com/apache/drill/blob/9993fa3547b029db5fe33a2210fa6f07e8ac1990/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.java#L303.
If related, a similar INT32 type field in the same file exhibits this problem,
but can be worked around via an explicit CAST() to INT.
At this time, I do not have a sanitized parquet file to submit as a reference
example. :(
Reference thread on drill-users list:
http://mail-archives.apache.org/mod_mbox/drill-user/202001.mbox/%3ccajguoa53ldkxqsh1fsvtj+dk5421eg4aw4paim++8bferxd...@mail.gmail.com%3e
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