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https://issues.apache.org/jira/browse/SPARK-18897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15754449#comment-15754449
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Apache Spark commented on SPARK-18897:
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User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/16310
> Fix SparkR SQL Test to drop test table
> --------------------------------------
>
> Key: SPARK-18897
> URL: https://issues.apache.org/jira/browse/SPARK-18897
> Project: Spark
> Issue Type: Bug
> Components: SparkR, Tests
> Affects Versions: 2.0.2
> Reporter: Dongjoon Hyun
>
> Currently, SparkR tests, `R/run-tests.sh` succeeds only once because
> `test_sparkSQL.R` does not clean up the test table `people`.
> As a result, the test data is accumulated at every run and the test cases
> fail.
> The following is the failure result for the second run.
> {code}
> Failed
> -------------------------------------------------------------------------
> 1. Failure: create DataFrame from RDD (@test_sparkSQL.R#204)
> -------------------
> collect(sql("SELECT age from people WHERE name = 'Bob'"))$age not equal to
> c(16).
> Lengths differ: 2 vs 1
> 2. Failure: create DataFrame from RDD (@test_sparkSQL.R#206)
> -------------------
> collect(sql("SELECT height from people WHERE name ='Bob'"))$height not equal
> to c(176.5).
> Lengths differ: 2 vs 1
> {code}
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