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https://issues.apache.org/jira/browse/SPARK-11214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15087675#comment-15087675
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Reynold Xin edited comment on SPARK-11214 at 1/8/16 11:29 PM:
--------------------------------------------------------------
Guys, I have a reason for the joining Problem.
Use this code in pyspark:
{code}
from pyspark import SparkContext, SparkConf
from pyspark.sql import HiveContext
conf = (SparkConf()
.setAppName("joining_test")
.setMaster("yarn-client")
.set("spark.driver.cores", "20")
.set("spark.driver.memory", "50g")
.set("spark.driver.maxResultSize", "0")
.set("spark.num.executors", "5")
.set("spark.executor.cores", "10")
# .set("spark.executor.memory", "40G")
)
sc = SparkContext(conf=conf)
hiveContext = HiveContext(sc)
hiveContext.sql('SELECT * FROM (SELECT "a" AS a) AS a JOIN (SELECT "a" AS b) AS
b ON a.a = b.b').take(10)
{code}
When ".set("spark.executor.memory", "40G")" is commented out the result will be
right.
When the executor momory is set the result will be empty.
Could somebody validate this?
Thank you
was (Author: xdsticker):
Guys, I have a reason for the joining Problem.
Use this code in pyspark:
from pyspark import SparkContext, SparkConf
from pyspark.sql import HiveContext
conf = (SparkConf()
.setAppName("joining_test")
.setMaster("yarn-client")
.set("spark.driver.cores", "20")
.set("spark.driver.memory", "50g")
.set("spark.driver.maxResultSize", "0")
.set("spark.num.executors", "5")
.set("spark.executor.cores", "10")
# .set("spark.executor.memory", "40G")
)
sc = SparkContext(conf=conf)
hiveContext = HiveContext(sc)
hiveContext.sql('SELECT * FROM (SELECT "a" AS a) AS a JOIN (SELECT "a" AS b) AS
b ON a.a = b.b').take(10)
When ".set("spark.executor.memory", "40G")" is commented out the result will be
right.
When the executor momory is set the result will be empty.
Could somebody validate this?
Thank you
> Join with Unicode-String results wrong empty
> --------------------------------------------
>
> Key: SPARK-11214
> URL: https://issues.apache.org/jira/browse/SPARK-11214
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Affects Versions: 1.5.0
> Reporter: Hans Fischer
> Assignee: Josh Rosen
> Priority: Critical
> Fix For: 1.5.1
>
>
> I created a join that should clearly result in a single row but return:
> empty. Could someone validate this bug?
> hiveContext.sql('SELECT * FROM (SELECT "c" AS a) AS a JOIN (SELECT "c" AS b)
> AS b ON a.a = b.b').take(10)
> result: []
> kind regards
> Hans
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