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https://issues.apache.org/jira/browse/HIVE-1138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12831301#action_12831301
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Zheng Shao commented on HIVE-1138:
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Bennie, I think the problem is that when Hive is reading the data and printing
to screen, TextInputFormat didn't pick up the codec for the output file:
attempt_201001151039_1841_r_000001_0.lzo_deflate
I remember TextInputFormat takes the extension of the file name and then decide
what codec to use. I think lzocodec is not correctly configured to handle
*.lzo_deflate files.
> Hive using lzo comporession returns unexpected results.
> -------------------------------------------------------
>
> Key: HIVE-1138
> URL: https://issues.apache.org/jira/browse/HIVE-1138
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.6.0
> Environment: hadoop 0.20.1, hive trunk 2010-02-03
> Reporter: Bennie Schut
> Priority: Blocker
>
> I have a tab separated files I have loaded it with "load data inpath" then I
> do a
> SET hive.exec.compress.output=true;
> SET mapred.output.compression.codec=com.hadoop.compression.lzo.LzoCodec;
> SET mapred.map.output.compression.codec=com.hadoop.compression.lzo.LzoCodec;
> select distinct login_cldr_id as cldr_id from chatsessions_load;
> Ended Job = job_201001151039_1641
> OK
> NULL
> NULL
> NULL
> Time taken: 49.06 seconds
> however if I start it without the set commands I get this:
> Ended Job = job_201001151039_1642
> OK
> 2283
> Time taken: 45.308 seconds
> Which is the correct result.
> When I do a "insert overwrite" on a rcfile table it will actually compress
> the data correctly.
> When I disable compression and query this new table the result is correct.
> When I enable compression it's wrong again.
> I see no errors in the logs.
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