[ 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} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org