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https://issues.apache.org/jira/browse/SPARK-19225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15823348#comment-15823348
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discipleforteen commented on SPARK-19225:
-----------------------------------------
spark 1.4.1
> select round(4.4, 2);
2017-01-16 09:47:21,573 INFO ParseDriver: Parsing command: select round(4.4, 2)
2017-01-16 09:47:21,783 INFO ParseDriver: Parse Completed
2017-01-16 09:47:22,318 INFO SparkContext: Starting job: processCmd at
CliDriver.java:423
2017-01-16 09:47:22,335 INFO DAGScheduler: Got job 0 (processCmd at
CliDriver.java:423) with 1 output partitions (allowLocal=false)
2017-01-16 09:47:22,335 INFO DAGScheduler: Final stage: ResultStage
0(processCmd at CliDriver.java:423)
2017-01-16 09:47:22,335 INFO DAGScheduler: Parents of final stage: List()
2017-01-16 09:47:22,339 INFO DAGScheduler: Missing parents: List()
2017-01-16 09:47:22,344 INFO DAGScheduler: Submitting ResultStage 0
(MapPartitionsRDD[2] at processCmd at CliDriver.java:423), which has no missing
parents
2017-01-16 09:47:22,382 INFO MemoryStore: ensureFreeSpace(3232) called with
curMem=0, maxMem=278302556
2017-01-16 09:47:22,384 INFO MemoryStore: Block broadcast_0 stored as values in
memory (estimated size 3.2 KB, free 265.4 MB)
2017-01-16 09:47:22,516 INFO MemoryStore: ensureFreeSpace(1852) called with
curMem=3232, maxMem=278302556
2017-01-16 09:47:22,516 INFO MemoryStore: Block broadcast_0_piece0 stored as
bytes in memory (estimated size 1852.0 B, free 265.4 MB)
2017-01-16 09:47:22,519 INFO BlockManagerInfo: Added broadcast_0_piece0 in
memory on localhost:45436 (size: 1852.0 B, free: 265.4 MB)
2017-01-16 09:47:22,520 INFO SparkContext: Created broadcast 0 from broadcast
at DAGScheduler.scala:874
2017-01-16 09:47:22,525 INFO DAGScheduler: Submitting 1 missing tasks from
ResultStage 0 (MapPartitionsRDD[2] at processCmd at CliDriver.java:423)
2017-01-16 09:47:22,526 INFO TaskSchedulerImpl: Adding task set 0.0 with 1 tasks
2017-01-16 09:47:22,562 INFO TaskSetManager: Starting task 0.0 in stage 0.0
(TID 0, localhost, PROCESS_LOCAL, 1392 bytes)
2017-01-16 09:47:22,571 INFO Executor: Running task 0.0 in stage 0.0 (TID 0)
2017-01-16 09:47:22,643 INFO Executor: Finished task 0.0 in stage 0.0 (TID 0).
955 bytes result sent to driver
2017-01-16 09:47:22,658 INFO TaskSetManager: Finished task 0.0 in stage 0.0
(TID 0) in 113 ms on localhost (1/1)
2017-01-16 09:47:22,658 INFO TaskSchedulerImpl: Removed TaskSet 0.0, whose
tasks have all completed, from pool
2017-01-16 09:47:22,661 INFO DAGScheduler: ResultStage 0 (processCmd at
CliDriver.java:423) finished in 0.126 s
2017-01-16 09:47:22,671 INFO DAGScheduler: Job 0 finished: processCmd at
CliDriver.java:423, took 0.352237 s
4.4
spark 2.1.0
> select round(4.4, 2);
17/01/16 09:48:13 INFO SparkSqlParser: Parsing command: select round(4.4, 2)
17/01/16 09:48:15 INFO CodeGenerator: Code generated in 215.145435 ms
17/01/16 09:48:15 INFO SparkContext: Starting job: processCmd at
CliDriver.java:376
17/01/16 09:48:15 INFO DAGScheduler: Got job 0 (processCmd at
CliDriver.java:376) with 1 output partitions
17/01/16 09:48:15 INFO DAGScheduler: Final stage: ResultStage 0 (processCmd at
CliDriver.java:376)
17/01/16 09:48:15 INFO DAGScheduler: Parents of final stage: List()
17/01/16 09:48:15 INFO DAGScheduler: Missing parents: List()
17/01/16 09:48:15 INFO DAGScheduler: Submitting ResultStage 0
(MapPartitionsRDD[3] at processCmd at CliDriver.java:376), which has no missing
parents
17/01/16 09:48:15 INFO MemoryStore: Block broadcast_0 stored as values in
memory (estimated size 5.9 KB, free 408.9 MB)
17/01/16 09:48:15 INFO MemoryStore: Block broadcast_0_piece0 stored as bytes in
memory (estimated size 3.1 KB, free 408.9 MB)
17/01/16 09:48:15 INFO BlockManagerInfo: Added broadcast_0_piece0 in memory on
10.9.233.62:34512 (size: 3.1 KB, free: 408.9 MB)
17/01/16 09:48:15 INFO SparkContext: Created broadcast 0 from broadcast at
DAGScheduler.scala:996
17/01/16 09:48:15 INFO DAGScheduler: Submitting 1 missing tasks from
ResultStage 0 (MapPartitionsRDD[3] at processCmd at CliDriver.java:376)
17/01/16 09:48:15 INFO TaskSchedulerImpl: Adding task set 0.0 with 1 tasks
17/01/16 09:48:16 INFO TaskSetManager: Starting task 0.0 in stage 0.0 (TID 0,
localhost, executor driver, partition 0, PROCESS_LOCAL, 6244 bytes)
17/01/16 09:48:16 INFO Executor: Running task 0.0 in stage 0.0 (TID 0)
17/01/16 09:48:16 INFO CodeGenerator: Code generated in 8.289946 ms
17/01/16 09:48:16 INFO Executor: Finished task 0.0 in stage 0.0 (TID 0). 1295
bytes result sent to driver
17/01/16 09:48:16 INFO TaskSetManager: Finished task 0.0 in stage 0.0 (TID 0)
in 77 ms on localhost (executor driver) (1/1)
17/01/16 09:48:16 INFO TaskSchedulerImpl: Removed TaskSet 0.0, whose tasks have
all completed, from pool
17/01/16 09:48:16 INFO DAGScheduler: ResultStage 0 (processCmd at
CliDriver.java:376) finished in 0.097 s
17/01/16 09:48:16 INFO DAGScheduler: Job 0 finished: processCmd at
CliDriver.java:376, took 0.205855 s
NULL
> Spark SQL round constant double return null
> --------------------------------------------
>
> Key: SPARK-19225
> URL: https://issues.apache.org/jira/browse/SPARK-19225
> Project: Spark
> Issue Type: Bug
> Affects Versions: 2.0.0, 2.0.1, 2.0.2, 2.1.0
> Reporter: discipleforteen
> Original Estimate: 1m
> Remaining Estimate: 1m
>
> Spark SQL round constant double value may return null . like 'select
> round(4.4, 2)' return null in spark 2.x. it's not compatible with spark 1.x
> version. it seems 4.4 is casted to decimal with new SqlBase.g4 , which is
> casted to double in spark 1.x version. round decimal 4.4, 2 get null in
> changeprecision...
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