我正在尝试使用 XGBoost 对 hive 上的数据训练模型,数据太大,我无法将其转换为 pandas df,所以我必须将 XGBoost 与 Spark df 结合使用。 创建XGBoostEstimator时,出现错误:
TypeError: 'JavaPackage' object is not callable Exception AttributeError: "'NoneType' object has no attribute '_detach'" in ignored
我没有使用 xgboost for Spark 的经验,我尝试过一些在线教程,但没有成功。
我尝试转换为pandas df,但数据太大,我总是从Java包装器中得到OutOfMemoryException
(我也尝试查找它,但该解决方案对我不起作用,提高了执行程序内存)。
我关注的最新教程是:
放弃 XGBoost 模块后,我开始使用 sparkxgb
。
spark = create_spark_session('shai', 'dna_pipeline')
# sparkxgboost files
spark.sparkContext.addPyFile('resources/sparkxgb.zip')
def create_spark_session(username=None, app_name="pipeline"):
if username is not None:
os.environ['HADOOP_USER_NAME'] = username
return SparkSession \
.builder \
.master("yarn") \
.appName(app_name) \
.config(...) \
.config(...) \
.getOrCreate()
def train():
train_df = spark.table('dna.offline_features_train_full')
test_df = spark.table('dna.offline_features_test_full')
from sparkxgb import XGBoostEstimator
vectorAssembler = VectorAssembler() \
.setInputCols(train_df.columns) \
.setOutputCol("features")
# This is where the program fails
xgboost = XGBoostEstimator(
featuresCol="features",
labelCol="label",
predictionCol="prediction"
)
pipeline = Pipeline().setStages([xgboost])
pipeline.fit(train_df)
完整的异常(exception)是:
Traceback (most recent call last):
File "/home/elad/DNA/dna/dna/run.py", line 283, in <module>
main()
File "/home/elad/DNA/dna/dna/run.py", line 247, in main
offline_model = train_model(True, home_dir=config['home_dir'], hdfs_client=client)
File "/home/elad/DNA/dna/dna/run.py", line 222, in train_model
model = train(offline_mode=offline, spark=spark)
File "/home/elad/DNA/dna/dna/model/xgboost_train.py", line 285, in train
predictionCol="prediction"
File "/home/elad/.conda/envs/DNAenv/lib/python2.7/site-packages/pyspark/__init__.py", line 105, in wrapper
return func(self, **kwargs)
File "/tmp/spark-7781039b-6821-42be-96e0-ca4005107318/userFiles-70b3d1de-a78c-4fac-b252-2f99a6761b32/sparkxgb.zip/sparkxgb/xgboost.py", line 115, in __init__
File "/home/elad/.conda/envs/DNAenv/lib/python2.7/site-packages/pyspark/ml/wrapper.py", line 63, in _new_java_obj
return java_obj(*java_args)
TypeError: 'JavaPackage' object is not callable
Exception AttributeError: "'NoneType' object has no attribute '_detach'" in <bound method XGBoostEstimator.__del__ of XGBoostEstimator_4f54b37156fb0a113233> ignored
我不知道为什么会发生这个异常,也不知道如何将sparkxgb正确集成到我的代码中。
如果有帮助,我们将不胜感激。
谢谢
最佳答案
经过一天对该模块的调试,问题只是错误地提交了 jar。 我在本地下载了 jar 并使用 pyspark-submit 它们:
PYSPARK_SUBMIT_ARGS=--jars resources/xgboost4j-0.72.jar,resources/xgboost4j-spark-0.72.jar
这解决了问题。
关于python - 如何将 xgboost 集成到 Spark 中? (Python),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57942208/