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cen yuhai commented on SPARK-17450: ----------------------------------- can you provide me davies's pr? > spark sql rownumber OOM > ----------------------- > > Key: SPARK-17450 > URL: https://issues.apache.org/jira/browse/SPARK-17450 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 1.6.2 > Reporter: cen yuhai > > spark sql will be OOM when using row_number() over too much sorted records... > There will be only 1 task to handle all records > This sql group by passenger_id, we have 100 million passengers. > {code} > SELECT > passenger_id, > total_order, > (CASE WHEN row_number() over (ORDER BY total_order DESC) BETWEEN 0 AND > 670800 THEN 'V3' END) AS order_rank > FROM > ( > SELECT > passenger_id, > 1 as total_order > FROM table > GROUP BY passenger_id > ) dd1 > {code} > {code} > java.lang.OutOfMemoryError: Java heap space > at > org.apache.spark.sql.catalyst.expressions.UnsafeRow.copy(UnsafeRow.java:536) > at > org.apache.spark.sql.catalyst.expressions.UnsafeRow.copy(UnsafeRow.java:93) > at > org.apache.spark.sql.execution.Window$$anonfun$8$$anon$1.fetchNextPartition(Window.scala:278) > at > org.apache.spark.sql.execution.Window$$anonfun$8$$anon$1.next(Window.scala:304) > at > org.apache.spark.sql.execution.Window$$anonfun$8$$anon$1.next(Window.scala:246) > at scala.collection.Iterator$$anon$11.next(Iterator.scala:328) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregationIterator.processInputs(TungstenAggregationIterator.scala:512) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregationIterator.<init>(TungstenAggregationIterator.scala:686) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1$$anonfun$2.apply(TungstenAggregate.scala:95) > at > org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1$$anonfun$2.apply(TungstenAggregate.scala:86) > at > org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$20.apply(RDD.scala:710) > at > org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$20.apply(RDD.scala:710) > at > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) > at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) > at > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306) > at org.apache.spark.rdd.RDD.iterator(RDD.scala:270) > at > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:74) > at > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) > at org.apache.spark.scheduler.Task.run(Task.scala:104) > at > org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:247) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > {code} > physical plan: > {code} > == Physical Plan == > Project [passenger_id#7L,total_order#0,CASE WHEN ((_we0#20 >= 0) && (_we1#21 > <= 670800)) THEN V3 AS order_rank#1] > +- Window [passenger_id#7L,total_order#0], > [HiveWindowFunction#org.apache.hadoop.hive.ql.udf.generic.GenericUDAFRowNumber() > windowspecdefinition(total_order#0 DESC,ROWS BETWEEN UNBOUNDED PRECEDING AND > UNBOUNDED FOLLOWING) AS > _we0#20,HiveWindowFunction#org.apache.hadoop.hive.ql.udf.generic.GenericUDAFRowNumber() > windowspecdefinition(total_order#0 DESC,ROWS BETWEEN UNBOUNDED PRECEDING AND > UNBOUNDED FOLLOWING) AS _we1#21], [total_order#0 DESC] > +- Sort [total_order#0 DESC], false, 0 > +- TungstenExchange SinglePartition, None > +- Project [passenger_id#7L,total_order#0] > +- TungstenAggregate(key=[passenger_id#7L], functions=[], > output=[passenger_id#7L,total_order#0]) > +- TungstenExchange hashpartitioning(passenger_id#7L,1000), > None > +- TungstenAggregate(key=[passenger_id#7L], functions=[], > output=[passenger_id#7L]) > +- Project [passenger_id#7L] > +- Filter product#9 IN (kuai,gulf) > +- HiveTableScan [passenger_id#7L,product#9], > MetastoreRelation pbs_dw, dwv_order_whole_day, None, > {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