Long queries does not parse in Hive
-----------------------------------
Key: HIVE-415
URL: https://issues.apache.org/jira/browse/HIVE-415
Project: Hadoop Hive
Issue Type: Bug
Components: Query Processor
Reporter: Zheng Shao
Assignee: Zheng Shao
Priority: Critical
A query like this won't parse, because the Hive grammar allows backtracking:
{code}
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable UNION ALL
select 1 from mytable;
{code}
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