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https://issues.apache.org/jira/browse/HIVE-18983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16406893#comment-16406893
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Kryvenko Igor commented on HIVE-18983:
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[~vgarg] How to undo last patch?
Because if put {{StatsSetupConst.clearStatsState(originalTableProperties);}}
under {{if(hivestatsautogather==false)}}
in some cases it might not override origin table properties.
See at the creating of statistics for create table like
{{DDLTask#createTableLike}}
{code}
if (crtTbl.getLocation() == null && !tbl.isPartitioned()
&& conf.getBoolVar(HiveConf.ConfVars.HIVESTATSAUTOGATHER)) {
StatsSetupConst.setStatsStateForCreateTable(tbl.getTTable().getParameters(),
MetaStoreUtils.getColumnNames(tbl.getCols()), StatsSetupConst.TRUE);
}
{code}
So in case when table hasn't location or it isn't partitioned new statistics
will be not created to this table and statistics from original table will be
saved, but it is wrong
> Add support for table properties inheritance in Create table like
> -----------------------------------------------------------------
>
> Key: HIVE-18983
> URL: https://issues.apache.org/jira/browse/HIVE-18983
> Project: Hive
> Issue Type: Improvement
> Reporter: Kryvenko Igor
> Assignee: Kryvenko Igor
> Priority: Minor
> Fix For: 3.0.0
>
> Attachments: HIVE-18983.01.patch, HIVE-18983.02.patch,
> HIVE-18983.03.patch, HIVE-18983.04.patch, HIVE-18983.05.patch
>
>
> Currently, Create table like support table properties.
> But it doesn't inherit table properties from original table.
> {code}
> create table T1(a int, b int) clustered by (a) into 2 buckets stored as orc
> TBLPROPERTIES ('comment'='comm');
> create table T like T1;
> show create table T;
> {code}
> *Output:*
> {code}
> CREATE TABLE `T`(
> `a` int,
> `b` int)
> CLUSTERED BY (
> a)
> INTO 2 BUCKETS
> ROW FORMAT SERDE
> 'org.apache.hadoop.hive.ql.io.orc.OrcSerde'
> STORED AS INPUTFORMAT
> 'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat'
> OUTPUTFORMAT
> 'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat'
> LOCATION
> 'maprfs:/user/hive/warehouse/t'
> TBLPROPERTIES (
> 'COLUMN_STATS_ACCURATE'='{\"BASIC_STATS\":\"true\"}',
> 'numFiles'='0',
> 'numRows'='0',
> 'rawDataSize'='0',
> 'totalSize'='0',
> 'transient_lastDdlTime'='1521230300')
> {code}
> It uses just default table properties and doesn't inherit properties from
> original table.
> It would be great if create table like will inherit origin table properties
> and will override them if they are specified in query .
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