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https://issues.apache.org/jira/browse/HIVE-8186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14139897#comment-14139897
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Sergey Shelukhin commented on HIVE-8186:
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{noformat}select t1.BLOCK__OFFSET__INSIDE__FILE,t2.BLOCK__OFFSET__INSIDE__FILE
from src t1 join src t2 on t1.key = t2.key;{noformat}
Passes
{noformat}select t2.BLOCK__OFFSET__INSIDE__FILE
from src t1 join src t2 on t1.key = t2.key;{noformat}
Fails.
The issue is that LazyBinarySerDe OI receives data intended for
UnionStructObjectInspector.
Judging by the above it has something to do with scanning table once for two
aliases.
I'll look tomorrow
> CBO Trunk Merge: join_vc fails
> ------------------------------
>
> Key: HIVE-8186
> URL: https://issues.apache.org/jira/browse/HIVE-8186
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-8186.patch
>
>
> Simplified query appears to fail in CBO branch even with CBO disabled. I'm
> looking...
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