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https://issues.apache.org/jira/browse/HIVE-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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He Yongqiang updated HIVE-1420:
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Attachment: hive-1420.1.patch
Two changes:
One is using fileformat from partition desc when needing to create an empty
file.
this is to fix the bug for 'select src from fileformat_mix_test;'
The other is set oc = null when do closing in ExecMapper.
And in ExecMapper's close, when see no data came to the mapper (which means an
empty file), just return and do nothing.
this is to fix the bug for 'select count(1) from fileformat_mix_test;' When
encountering empty file, we are not closing MapOperator tree. Hope this is
fine. If we do the close, we will get NullPointerException from deep Hadoop
code because of non-valid output collector
> problem with sequence and rcfiles are mixed for null partitions
> ---------------------------------------------------------------
>
> Key: HIVE-1420
> URL: https://issues.apache.org/jira/browse/HIVE-1420
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.6.0
> Reporter: Namit Jain
> Assignee: He Yongqiang
> Fix For: 0.6.0, 0.7.0
>
> Attachments: hive-1420.1.patch
>
>
> drop table foo;
> create table foo (src int, value string) partitioned by (ds string);
> alter table foo set fileformat Sequencefile;
> insert overwrite table foo partition (ds='1')
> select key, value from src;
> alter table foo add partition (ds='2');
> alter table foo set fileformat rcfile;
> select count(1) from foo;
> The above testcase fails
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