J Y created PARQUET-2180:
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Summary: make the default behavior for proto writing not-backwards
compatible
Key: PARQUET-2180
URL: https://issues.apache.org/jira/browse/PARQUET-2180
Project: Parquet
Issue Type: Improvement
Components: parquet-protobuf
Reporter: J Y
https://issues.apache.org/jira/browse/PARQUET-968 introduced supporting maps
and lists in a spec compliant way. however, to not break existing libraries, a
flag was introduced and defaulted the write behavior to NOT use the specs
compliant writes.
it's been over 5 years, and people should be really off of it. so much so,
that trying to use the new parquet-cli tool to read parquet files generated by
flink using doesn't work b/c it's hard coded to never allow the old style. the
deprecated parquet-tools reads these files fine b/c it's the older style.
i started coding up a workaround in flink-parquet and parquet-cli, but stopped.
we really should just move on at this point, imho. protobufs often have
repeated primitives and maps now, so it just makes sense to move on at this
point. we should keep the flag around and let people override it back to being
backwards compatible though.
i have the code written and can submit a PR if you'd like.
i'm not an expert in parquet though, so i'm unclear as to the deep downstream
ramifications of this change, so i would love to get feedback in this area.
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