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https://issues.apache.org/jira/browse/PARQUET-225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vassil Lunchev updated PARQUET-225:
-----------------------------------
Description:
As of now, parquet doesn't support delta encoding for INT64. However it is
planned in the format:
https://github.com/Parquet/parquet-format/blob/master/Encodings.md
The benefits of this feature are huge. For timestamps it achieves twice better
compression than SNAPPY on plain encoding, and the reading is faster. This
feature is actually advertised on the home page of Parquet, even though it is
not yet implemented:
http://parquet.incubator.apache.org/
http://image.slidesharecdn.com/hadoopsummit-140630160016-phpapp01/95/efficient-data-storage-for-analytics-with-apache-parquet-20-30-638.jpg?cb=1404162126
> INT64 support for Delta Encoding
> --------------------------------
>
> Key: PARQUET-225
> URL: https://issues.apache.org/jira/browse/PARQUET-225
> Project: Parquet
> Issue Type: New Feature
> Reporter: Vassil Lunchev
>
> As of now, parquet doesn't support delta encoding for INT64. However it is
> planned in the format:
> https://github.com/Parquet/parquet-format/blob/master/Encodings.md
> The benefits of this feature are huge. For timestamps it achieves twice
> better compression than SNAPPY on plain encoding, and the reading is faster.
> This feature is actually advertised on the home page of Parquet, even though
> it is not yet implemented:
> http://parquet.incubator.apache.org/
> http://image.slidesharecdn.com/hadoopsummit-140630160016-phpapp01/95/efficient-data-storage-for-analytics-with-apache-parquet-20-30-638.jpg?cb=1404162126
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