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Posted to issues@spark.apache.org by "John Zhuge (Jira)" <ji...@apache.org> on 2023/02/27 07:56:00 UTC
[jira] [Updated] (SPARK-42596) [YARN] OMP_NUM_THREADS not set to number of executor cores by default
[ https://issues.apache.org/jira/browse/SPARK-42596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
John Zhuge updated SPARK-42596:
-------------------------------
Description:
Run this PySpark script with `spark.executor.cores=1`
{code:python}
import os
from pyspark.sql import SparkSession
from pyspark.sql.functions import udf
spark = SparkSession.builder.getOrCreate()
var_name = 'OMP_NUM_THREADS'
def get_env_var():
return os.getenv(var_name)
udf_get_env_var = udf(get_env_var)
spark.range(1).toDF("id").withColumn(f"env_{var_name}", udf_get_env_var()).show(truncate=False)
{code}
Output with release `3.3.2`:
{noformat}
+---+-----------------------+
|id |env_OMP_NUM_THREADS |
+---+-----------------------+
|0 |null |
+---+-----------------------+
{noformat}
Output with release `3.3.0`:
{noformat}
+---+-----------------------+
|id |env_OMP_NUM_THREADS |
+---+-----------------------+
|0 |1 |
+---+-----------------------+
{noformat}
was:
Run this PySpark script with `spark.executor.cores=1`
{code:python}
import os
from pyspark.sql import SparkSession
from pyspark.sql.functions import udf
spark = SparkSession.builder.getOrCreate()
var_name = 'OMP_NUM_THREADS'
def get_env_var():
return os.getenv(var_name)
udf_get_env_var = udf(get_env_var)
spark.range(1).toDF("id").withColumn(f"env_{var_name}", udf_get_env_var()).show(truncate=False)
{code}
Output with release `3.3.2`:
{noformat}
+---+-----------------------+
|id |env_OMP_NUM_THREADS |
+---+-----------------------+
|0 |null |
+---+-----------------------+
{noformat}
Output with release `3.3.0`:
{noformat}
+---+-----------------------+
|id |env_OMP_NUM_THREADS|
+---+-----------------------+
|0 |1 |
+---+-----------------------+
{noformat}
> [YARN] OMP_NUM_THREADS not set to number of executor cores by default
> ---------------------------------------------------------------------
>
> Key: SPARK-42596
> URL: https://issues.apache.org/jira/browse/SPARK-42596
> Project: Spark
> Issue Type: Bug
> Components: PySpark, YARN
> Affects Versions: 3.3.2
> Reporter: John Zhuge
> Priority: Major
>
> Run this PySpark script with `spark.executor.cores=1`
> {code:python}
> import os
> from pyspark.sql import SparkSession
> from pyspark.sql.functions import udf
> spark = SparkSession.builder.getOrCreate()
> var_name = 'OMP_NUM_THREADS'
> def get_env_var():
> return os.getenv(var_name)
> udf_get_env_var = udf(get_env_var)
> spark.range(1).toDF("id").withColumn(f"env_{var_name}", udf_get_env_var()).show(truncate=False)
> {code}
> Output with release `3.3.2`:
> {noformat}
> +---+-----------------------+
> |id |env_OMP_NUM_THREADS |
> +---+-----------------------+
> |0 |null |
> +---+-----------------------+
> {noformat}
> Output with release `3.3.0`:
> {noformat}
> +---+-----------------------+
> |id |env_OMP_NUM_THREADS |
> +---+-----------------------+
> |0 |1 |
> +---+-----------------------+
> {noformat}
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