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https://issues.apache.org/jira/browse/IMPALA-1842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17255380#comment-17255380
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Tim Armstrong commented on IMPALA-1842:
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Cleaning up test_decimal_queries by merging the avro decimal tests into the
other ones and adding any remaining file formats would be a good way to learn
the python test infra. I don't think we're too concerned about the test
coverage gap though.
> Enable decimal tests on all table formats
> -----------------------------------------
>
> Key: IMPALA-1842
> URL: https://issues.apache.org/jira/browse/IMPALA-1842
> Project: IMPALA
> Issue Type: Improvement
> Components: Infrastructure
> Affects Versions: Impala 2.0
> Reporter: Matthew Jacobs
> Priority: Minor
> Labels: newbie, ramp-up, test-infra
>
> In CDH4 we didn't support decimal tests (e.g. tests using decimal_tbl and
> decimal_tiny) for formats that Impala couldn't write because Hive didn't
> support writing DECIMAL. In CDH5, we should be able to run decimal tests on
> other formats because Hive 0.13 supports writing DECIMALs.
> I have a patch prepared to enable these tests, but tests won't work yet due
> to https://issues.apache.org/jira/browse/HIVE-7373 -- 0 is NULL in Hive
> (e.g. cast(0.0 as decimal(1,1) is NULL), and our test tables have 0s.
> When HIVE-7373 is resolved, we should enable the decimal tests.
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