java.lang.NoClassDefFoundError: Could not initialize class com.intel.analytics.bigdl.dllib.utils.Engine

[phanchauthang]

i got this problem when i run:

recommended to set it to True when running BigDL in Jupyter notebook

OrcaContext.log_output = True # (this will display terminal's stdout and stderr in the Jupyter notebook).

cluster_mode = "local"

if cluster_mode == "local":
init_orca_context(cluster_mode="local", cores=1) # run in local mode
elif cluster_mode == "k8s":
init_orca_context(cluster_mode="k8s", num_nodes=2, cores=2) # run on K8s cluster
elif cluster_mode == "yarn":
init_orca_context(cluster_mode="yarn-client", num_nodes=2, cores=2) # run on Hadoop YARN cluster
this on google colab and i dont know how to fix it, someone help me, plsssss

[Le-Zheng]

Hi,

Could you please verify if bigdl-orca and bigdl-dllib is installed correctly?

# Install jdk8
!apt-get install openjdk-8-jdk-headless -qq > /dev/null
import os
# Set environment variable JAVA_HOME.
os.environ["JAVA_HOME"] = "/usr/lib/jvm/java-8-openjdk-amd64"
!update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
!java -version

!pip install --pre --upgrade bigdl-orca-spark3

import argparse

from bigdl.orca import init_orca_context, stop_orca_context
from bigdl.orca import OrcaContext

# recommended to set it to True when running BigDL in Jupyter notebook 
OrcaContext.log_output = True # (this will display terminal's stdout and stderr in the Jupyter notebook).

cluster_mode = "local"

if cluster_mode == "local":  
    init_orca_context(cluster_mode="local", cores=1) # run in local mode
elif cluster_mode == "k8s":  
    init_orca_context(cluster_mode="k8s", num_nodes=2, cores=2) # run on K8s cluster
elif cluster_mode == "yarn":  
    init_orca_context(cluster_mode="yarn-client", num_nodes=2, cores=2) # run on Hadoop YARN cluster

[phanchauthang]

thanks you for solve my problem.
!pip install --pre --upgrade bigdl-orca-spark3 that what all i need :D