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https://issues.apache.org/jira/browse/PARQUET-225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14384667#comment-14384667
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Vassil Lunchev commented on PARQUET-225:
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The Travis CI build passed for the pull request. Waiting for a review:
https://github.com/apache/incubator-parquet-mr/pull/154
> 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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