[jira] [Resolved] (SPARK-10893) Lag Analytic function broken

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-10893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-10893.
-------------------------------
    Resolution: Duplicate

> Lag Analytic function broken
> ----------------------------
>
>                 Key: SPARK-10893
>                 URL: https://issues.apache.org/jira/browse/SPARK-10893
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core, SQL
>    Affects Versions: 1.5.0
>         Environment: Spark Standalone Cluster on Linux
>            Reporter: Jo Desmet
>
> Trying to aggregate with the LAG Analytic function gives the wrong result. In my testcase it was always giving the fixed value '103079215105' when I tried to run on an integer.
> Note that this only happens on Spark 1.5.0, and only when running in cluster mode.
> It works fine when running on Spark 1.4.1, or when running in local mode. 
> I did not test on a yarn cluster.
> I did not test other analytic aggregates.
> Input Jason:
> {code:borderStyle=solid|title=/home/app/input.json}
> {"VAA":"A", "VBB":1}
> {"VAA":"B", "VBB":-1}
> {"VAA":"C", "VBB":2}
> {"VAA":"d", "VBB":3}
> {"VAA":null, "VBB":null}
> {code}
> Java:
> {code:borderStyle=solid}
>     SparkContext sc = new SparkContext(conf);
>     HiveContext sqlContext = new HiveContext(sc);
>     DataFrame df = sqlContext.read().json("file:///home/app/input.json");
>     
>     df = df.withColumn(
>       "previous",
>       lag(dataFrame.col("VBB"), 1)
>         .over(Window.orderBy(dataFrame.col("VAA")))
>       );
> {code}
> Important to understand the conditions under which the job ran, I submitted to a standalone spark cluster in client mode as follows:
> {code:borderStyle=solid}
> spark-submit \
>   --master spark:\\xxxxxx:7077 \
>   --deploy-mode client \
>   --class package.to.DriverClass \
>   --driver-java-options -Dhdp.version=2.2.0.0–2041 \
>   --num-executors 2 \
>   --driver-memory 2g \
>   --executor-memory 2g \
>   --executor-cores 2 \
>   /path/to/sample-program.jar
> {code}
> Expected Result:
> {code:borderStyle=solid}
> {"VAA":null, "VBB":null, "previous":null}
> {"VAA":"A", "VBB":1, "previous":null}
> {"VAA":"B", "VBB":-1, "previous":1}
> {"VAA":"C", "VBB":2, "previous":-1}
> {"VAA":"d", "VBB":3, "previous":2}
> {code}
> Actual Result:
> {code:borderStyle=solid}
> {"VAA":null, "VBB":null, "previous":103079215105}
> {"VAA":"A", "VBB":1, "previous":103079215105}
> {"VAA":"B", "VBB":-1, "previous":103079215105}
> {"VAA":"C", "VBB":2, "previous":103079215105}
> {"VAA":"d", "VBB":3, "previous":103079215105}
> {code}



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