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https://issues.apache.org/jira/browse/PARQUET-2151?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated PARQUET-2151:
Description:
Parquet uses reflection to load a hadoop2 input stream, falling back to a
hadoop-1 compatible client if not found.
All hadoop 2.0.2+ releases work with H2SeekableInputStream, so the binding to
H2SeekableInputStream reworked to avoid needing reflection. This would make it
a lot easier to probe for/use the bytebuffer input, and line the code up for
more recent hadoop releases.
H1SeekableInputStream is still needed to handle streams without
ByteBufferReadable.
At some poiint support for ByteBufferPositionedReadable is needed, because that
is really what parquet wants. that's where reflection will be needed
was:
Parquet uses reflection to load a hadoop2 input stream, falling back to a
hadoop-1 compatible client if not found.
All hadoop 2.0.2+ releases work with H2SeekableInputStream, so
H1SeekableInputStream can be cut and the binding to H2SeekableInputStream
reworked to avoid needing reflection. This would make it a lot easier to probe
for/use the bytebuffer input, and line the code up for more recent hadoop
releases.
> Drop Hadoop 2 input stream reflection from parquet-hadoop
> --
>
> Key: PARQUET-2151
> URL: https://issues.apache.org/jira/browse/PARQUET-2151
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr
>Affects Versions: 1.13.0
>Reporter: Steve Loughran
>Priority: Minor
>
> Parquet uses reflection to load a hadoop2 input stream, falling back to a
> hadoop-1 compatible client if not found.
> All hadoop 2.0.2+ releases work with H2SeekableInputStream, so the binding to
> H2SeekableInputStream reworked to avoid needing reflection. This would make
> it a lot easier to probe for/use the bytebuffer input, and line the code up
> for more recent hadoop releases.
> H1SeekableInputStream is still needed to handle streams without
> ByteBufferReadable.
> At some poiint support for ByteBufferPositionedReadable is needed, because
> that is really what parquet wants. that's where reflection will be needed
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