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https://issues.apache.org/jira/browse/HIVE-19756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16803701#comment-16803701
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xinzhang commented on HIVE-19756:
---------------------------------
please set the config :
set hive.optimize.index.filter=false;
> Insert request with UNION ALL and lateral view explode
> ------------------------------------------------------
>
> Key: HIVE-19756
> URL: https://issues.apache.org/jira/browse/HIVE-19756
> Project: Hive
> Issue Type: Bug
> Environment: HDP 2.6.4
> Reporter: Frédéric ESCANDELL
> Priority: Major
>
> Hi,
> While executing this code snippet, no data was inserted in the final table t3.
> By replacing UNION ALL by UNION or removing the "lateral view explode" the
> code works properly.
>
> {code:sql}
> DROP table t1;
> DROP table t2;
> DROP table t3;
> CREATE TABLE t1(cle string,valeur array<struct<v:string>>)
> 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';
> INSERT INTO table t1 select * from (select "a",array(named_struct('v','x'),
> named_struct('v','y'))) tmp;
> CREATE TABLE t2(cle string,valeur array<struct<v:string>>)
> 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';
> INSERT INTO table t2 select * from (select "b",array(named_struct('v','z'),
> named_struct('v','w'))) tmp;
> DROP view v1;
> DROP table t3;
> CREATE VIEW v1 (cle,valeur)
> AS
> select base.cle,val.v from (select cle,valeur from t1) as base
> lateral view explode(base.valeur) a as val
> union all
> select base1.cle,val.v from (select cle,valeur from t2) as base1
> lateral view explode(base1.valeur) a as val;
> CREATE TABLE t3(cle string,valeur string)
> 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';
> insert into t3
> select * from v1;
> {code}
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