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https://issues.apache.org/jira/browse/HIVE-8115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14139362#comment-14139362
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Xiaobing Zhou commented on HIVE-8115:
-------------------------------------
[~hsubramaniyan] This is intentional because "LazyMap does not deal with the
case of a NULL map. That is handled by the parent LazyObject." , This patch
lets users know what happened behind.
> Hive select query hang when fields contain map
> ----------------------------------------------
>
> Key: HIVE-8115
> URL: https://issues.apache.org/jira/browse/HIVE-8115
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.0
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Attachments: HIVE-8115.1.patch, createTable.hql, data
>
>
> Attached the repro of the issue. When creating an table loading the data
> attached, all hive query with hangs even just select * from the table.
> repro steps:
> 1. run createTable.hql
> 2. hadoop fs ls -put data /data
> 3. LOAD DATA INPATH '/data' OVERWRITE INTO TABLE testtable;
> 4. SELECT * FROM testtable;
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