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Posted to issues-all@impala.apache.org by "Zoltán Borók-Nagy (JIRA)" <ji...@apache.org> on 2018/07/16 10:34:00 UTC
[jira] [Created] (IMPALA-7304) Impala shouldn't write column
indexes for float columns until PARQUET-1222 is resolved
Zoltán Borók-Nagy created IMPALA-7304:
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Summary: Impala shouldn't write column indexes for float columns until PARQUET-1222 is resolved
Key: IMPALA-7304
URL: https://issues.apache.org/jira/browse/IMPALA-7304
Project: IMPALA
Issue Type: Bug
Affects Versions: Impala 2.13.0, Impala 3.1.0
Reporter: Zoltán Borók-Nagy
Impala master branch can already write the [Parquet page index|https://github.com/apache/parquet-format/blob/master/PageIndex.md].
However, we still don't have well-defined ordering for floating-point numbers in Parquet: [PARQUET-1222|https://issues-test.apache.org/jira/browse/PARQUET-1222]
Currently impala writes the page index with fmax()/fmin() semantics, but it might contradicts the future specification that will be defined once PARQUET-1222 is resolved.
We should not write column indexes for floating-point columns until PARQUET-1222 is resolved.
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