Created
June 30, 2019 22:52
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Reading and writing to minIO from Spark
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from pyspark import SparkContext, SparkConf, SQLContext | |
import os | |
os.environ['HADOOP_HOME'] = '/opt/hadoop/' | |
os.environ['JAVA_HOME'] = '/usr/lib/jvm/java-8-openjdk-amd64' | |
os.environ['PYSPARK_DRIVER_PYTHON'] = 'python3' | |
os.environ['PYSPARK_PYTHON'] = 'python3' | |
os.environ['LD_LIBRARY_PATH'] = '/opt/hadoop/lib/native' | |
os.environ['SPARK_DIST_CLASSPATH'] = "/opt/hadoop/etc/hadoop:/opt/hadoop/share/hadoop/common/lib/*:/opt/hadoop/share/hadoop/common/*:/opt/hadoop/share/hadoop/hdfs:/opt/hadoop/share/hadoop/hdfs/lib/*:/opt/hadoop/share/hadoop/hdfs/*:/opt/hadoop/share/hadoop/mapreduce/lib/*:/opt/hadoop/share/hadoop/mapreduce/*:/opt/hadoop/share/hadoop/yarn:/opt/hadoop/share/hadoop/yarn/lib/*:/opt/hadoop/share/hadoop/yarn/*" | |
os.environ['SPARK_HOME'] = '/opt/spark/' | |
conf = ( | |
SparkConf() | |
.setAppName("Spark Minio Test") | |
.set("spark.hadoop.fs.s3a.endpoint", "http://localhost:9091") | |
.set("spark.hadoop.fs.s3a.access.key", os.environ.get('MINIO_ACCESS_KEY')) | |
.set("spark.hadoop.fs.s3a.secret.key", os.environ.get('MINIO_SECRET_KEY')) | |
.set("spark.hadoop.fs.s3a.path.style.access", True) | |
.set("spark.hadoop.fs.s3a.impl", "org.apache.hadoop.fs.s3a.S3AFileSystem") | |
) | |
sc = SparkContext(conf=conf).getOrCreate() | |
sqlContext = SQLContext(sc) | |
# Reading | |
print(sc.wholeTextFiles('s3a://datalake/test.txt').collect()) | |
# Writing | |
path = "s3a://user-jitsejan/mario-colors-two/" | |
rdd = sc.parallelize([('Mario', 'Red'), ('Luigi', 'Green'), ('Princess', 'Pink')]) | |
rdd.toDF(['name', 'color']).write.csv(path) |
That's resolved and now I get this new error. It seems to use spark from pyspark-notebook image i..e from /usr/local/spark although SPARKHOME is set to path from "/home/jovyan/spark-2.4.0-bin-hadoop2.7"
Could you try to set SPARK_HOME explicitly in your notebook so you are sure it is the right version? Did you also try with findspark
?
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Did you use those exact same versions of the libraries? I remember I struggled using different SDK versions and only this combination worked for me at the time.