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https://issues.apache.org/jira/browse/HIVE-21806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dinesh Garg reassigned HIVE-21806:
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Assignee: Thejas Nair
> Renaming a table to another db does not handle Impala stats in partitoned
> tables
> --------------------------------------------------------------------------------
>
> Key: HIVE-21806
> URL: https://issues.apache.org/jira/browse/HIVE-21806
> Project: Hive
> Issue Type: Bug
> Components: Metastore, Standalone Metastore
> Affects Versions: 3.1.0
> Reporter: Csaba Ringhofer
> Assignee: Thejas Nair
> Priority: Major
>
> The issue seems similar to HIVE-9720, but only happens with partitioned
> tables. I only tested with Hive 3.1 in Impala dev environment.
> The issue can be reproduced by the following statements (it doesn't matter
> whether Hive or Impala runs them with the exception of compute/show stats).
> create database db1;
> create database db2;
> create table db1.t(i int) partitioned by (p int);
> insert into db1.t partition (p=1) values (2);
> compute stats db1.t; -- needs Impala
> alter table db1.t rename to db2.t;
> show column stats db1.2; -- needs Impala, null count and ndv will be
> incorrectly -1
> drop table db2.t; -- this will hang
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