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https://issues.apache.org/jira/browse/HIVE-6189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13869463#comment-13869463
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Hive QA commented on HIVE-6189:
-------------------------------
{color:red}Overall{color}: -1 at least one tests failed
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12622596/HIVE-6189.1.patch
{color:red}ERROR:{color} -1 due to 7 failed/errored test(s), 4917 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_subq_insert
org.apache.hadoop.hive.ql.parse.TestParse.testParse_sample2
org.apache.hadoop.hive.ql.parse.TestParse.testParse_sample3
org.apache.hadoop.hive.ql.parse.TestParse.testParse_sample4
org.apache.hadoop.hive.ql.parse.TestParse.testParse_sample5
org.apache.hadoop.hive.ql.parse.TestParse.testParse_sample6
org.apache.hadoop.hive.ql.parse.TestParse.testParse_sample7
{noformat}
Test results:
http://bigtop01.cloudera.org:8080/job/PreCommit-HIVE-Build/881/testReport
Console output:
http://bigtop01.cloudera.org:8080/job/PreCommit-HIVE-Build/881/console
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 7 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12622596
> Support top level union all statements
> --------------------------------------
>
> Key: HIVE-6189
> URL: https://issues.apache.org/jira/browse/HIVE-6189
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Attachments: HIVE-6189.1.patch
>
>
> I've always wondered why union all has to be in subqueries in hive.
> After looking at it, problems are:
> - Hive Parser:
> - Union happens at the wrong place (insert ... select ... union all select
> ...) is parsed as (insert select) union select.
> - There are many rewrite rules in the parser to force any query into the a
> from - insert -select form. No doubt for historical reasons.
> - Plan generation/semantic analysis assumes top level "TOK_QUERY" and not top
> level "TOK_UNION".
> The rewrite rules don't work when we move the "UNION ALL" recursion into the
> select statements. However, it's not hard to do that in code.
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