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Posted to dev@parquet.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/04/04 09:31:00 UTC

[jira] [Resolved] (PARQUET-1881) How to enable sorted array flag while writing a column

     [ https://issues.apache.org/jira/browse/PARQUET-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved PARQUET-1881.
-------------------------------------
    Resolution: Not A Bug

Closing since this is a user question, there is nothing to track here.

> How to enable sorted array flag while writing a column
> ------------------------------------------------------
>
>                 Key: PARQUET-1881
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1881
>             Project: Parquet
>          Issue Type: Task
>          Components: parquet-avro, parquet-cpp, parquet-format, parquet-mr, parquet-thrift
>            Reporter: Khasim Shaik
>            Priority: Trivial
>              Labels: newbie
>
> I want to understand how can we enable the flag "sortedArray" information in metadata while writing a row group or column
> I am exploring parquet.thrift to understand more about metadata, 
> I observed a field in metadata which is related to below struct in parquet.thrift
> I am wondering how to set these fields from parquet while writing a column or rowgroup 
> struct SortingColumn {
>   /** The column index (in this row group) **/
>   1: required i32 column_idx
>   /** If true, indicates this column is sorted in descending order. **/
>   2: required bool descending
>   /** If true, nulls will come before non-null values, otherwise,
>    * nulls go at the end. */
>   3: required bool nulls_first
> }



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