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https://issues.apache.org/jira/browse/HIVE-6578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13935790#comment-13935790
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Sergey Shelukhin commented on HIVE-6578:
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Some minor comments on new changes, can be fixed on commit. +1 otherwise if
tests pass.
> Use ORC file footer statistics through StatsProvidingRecordReader interface
> for analyze command
> -----------------------------------------------------------------------------------------------
>
> Key: HIVE-6578
> URL: https://issues.apache.org/jira/browse/HIVE-6578
> Project: Hive
> Issue Type: New Feature
> Affects Versions: 0.13.0
> Reporter: Prasanth J
> Assignee: Prasanth J
> Labels: orcfile
> Attachments: HIVE-6578.1.patch, HIVE-6578.2.patch, HIVE-6578.3.patch
>
>
> ORC provides file level statistics which can be used in analyze partialscan
> and noscan cases to compute basic statistics like number of rows, number of
> files, total file size and raw data size. On the writer side, a new interface
> was added earlier (StatsProvidingRecordWriter) that exposed stats when
> writing a table. Similarly, a new interface StatsProvidingRecordReader can be
> added which when implemented should provide stats that are gathered by the
> underlying file format.
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