NoSuchMethodException:Pyspark 模型加载中的 org.apache.spark.ml.classification.GBTClassificationModel
NoSuchMethodException: org.apache.spark.ml.classification.GBTClassificationModel in Pyspark model load
我已经在 pyspark 中训练了一个模型
##Model
gbt = GBTClassifier(maxIter=10)
gbtModel = gbt.fit(train)
predictions = gbtModel.transform(test)
这里我正在保存管道和模型
#Save pipeline
pipelineModel.write().overwrite().save("s3://data-production/pipelineModel_v1")
#Save Model
gbtModel.save("s3://data-production/first_trade.model_v0")
现在在生产/未来的数据集中,我正在加载管道和模型
pipelineModel = PipelineModel.load("s3://data-production/pipelineModel_v1")
new_test= pipelineModel.transform(new_df1)
model = GBTClassifier.load("s3://data-production/first_trade.model_v0")
模型加载后出现此错误
Py4JJavaError: An error occurred while calling o4701.load.
: java.lang.NoSuchMethodException: org.apache.spark.ml.classification.GBTClassificationModel.<init>(java.lang.String)
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.getConstructor(Class.java:1825)
at org.apache.spark.ml.util.DefaultParamsReader.load(ReadWrite.scala:496)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.lang.Thread.run(Thread.java:748)
(<class 'py4j.protocol.Py4JJavaError'>, Py4JJavaError('An error occurred while calling o4701.load.\n', JavaObject id=o4702), <traceback object at 0x7f247a3eb9c8>)
保存的模型本质上是您训练的 GBTClassifier 的序列化版本。要反序列化模型,您还需要生产代码中的原始 类。将此行添加到导入语句集中。
from pyspark.ml.classification import GBTClassifier, GBTClassificationModel
我已经在 pyspark 中训练了一个模型
##Model
gbt = GBTClassifier(maxIter=10)
gbtModel = gbt.fit(train)
predictions = gbtModel.transform(test)
这里我正在保存管道和模型
#Save pipeline
pipelineModel.write().overwrite().save("s3://data-production/pipelineModel_v1")
#Save Model
gbtModel.save("s3://data-production/first_trade.model_v0")
现在在生产/未来的数据集中,我正在加载管道和模型
pipelineModel = PipelineModel.load("s3://data-production/pipelineModel_v1")
new_test= pipelineModel.transform(new_df1)
model = GBTClassifier.load("s3://data-production/first_trade.model_v0")
模型加载后出现此错误
Py4JJavaError: An error occurred while calling o4701.load.
: java.lang.NoSuchMethodException: org.apache.spark.ml.classification.GBTClassificationModel.<init>(java.lang.String)
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.getConstructor(Class.java:1825)
at org.apache.spark.ml.util.DefaultParamsReader.load(ReadWrite.scala:496)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.lang.Thread.run(Thread.java:748)
(<class 'py4j.protocol.Py4JJavaError'>, Py4JJavaError('An error occurred while calling o4701.load.\n', JavaObject id=o4702), <traceback object at 0x7f247a3eb9c8>)
保存的模型本质上是您训练的 GBTClassifier 的序列化版本。要反序列化模型,您还需要生产代码中的原始 类。将此行添加到导入语句集中。
from pyspark.ml.classification import GBTClassifier, GBTClassificationModel