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https://issues.apache.org/jira/browse/SPARK-12741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15240264#comment-15240264
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Stephane Maarek commented on SPARK-12741:
-----------------------------------------
Hi Sean,
Not sure what you mean...
In my SO: when I run against just a spark shell, it works. When I run against
YARN with spark-shell --master yarn --deploy-mode client, the outcome of
(firstCount, secondCount) is never the same twice. Although, the more I run the
count under the same session, eventually it converges to the right result. When
I run just a spark-shell, I get the right result right away. I can't share any
data I'm sorry... the test case would literally be firstCount = 2395
It also seems that behavior happens on smaller datasets... but I can't tell for
sure.
I'm sorry I can't help more... If you have detailed steps you'd like me to run
or tests you'd like me to run, let me know
Regards
Stephane
> DataFrame count method return wrong size.
> -----------------------------------------
>
> Key: SPARK-12741
> URL: https://issues.apache.org/jira/browse/SPARK-12741
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Sasi
>
> Hi,
> I'm updating my report.
> I'm working with Spark 1.5.2, (used to be 1.5.0), I have a DataFrame and I
> have 2 method, one for collect data and other for count.
> method doQuery looks like:
> {code}
> dataFrame.collect()
> {code}
> method doQueryCount looks like:
> {code}
> dataFrame.count()
> {code}
> I have few scenarios with few results:
> 1) Non data exists on my NoSQLDatabase results: count 0 and collect() 0
> 2) 3 rows exists results: count 0 and collect 3.
> 3) 5 rows exists results: count 2 and collect 5.
> I tried to change the count code to the below code, but got the same results
> as I mentioned above.
> {code}
> dataFrame.sql("select count(*) from tbl").count/collect[0]
> {code}
> Thanks,
> Sasi
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