[jira] [Updated] (IMPALA-4944) COMPUTE STATS on non-primitive columns

["Gabor Kaszab (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-4944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Kaszab updated IMPALA-4944:
---------------------------------
    Labels: catalog-server complextype statistics  (was: catalog-server statistics)

> COMPUTE STATS on non-primitive columns
> --------------------------------------
>
>                 Key: IMPALA-4944
>                 URL: https://issues.apache.org/jira/browse/IMPALA-4944
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Catalog
>    Affects Versions: Impala 2.9.0
>            Reporter: Miklos Szurap
>            Priority: Major
>              Labels: catalog-server, complextype, statistics
>
> Currently Impala does not compute the stats for complex-type columns, as per the [docs|https://www.cloudera.com/documentation/enterprise/latest/topics/impala_compute_stats.html]:
> {quote} 
> Currently, the statistics created by the COMPUTE STATS statement do not include information about complex type columns. The column stats metrics for complex columns are always shown as -1. For queries involving complex type columns, Impala uses heuristics to estimate the data distribution within such columns.
> {quote}



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