trying to import jpype in AWS lambda function

[GuptaNaman1998]

[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named '_jpype'
Traceback (most recent call last):

I checked the jpype folder and saw that init.py file has a statement "import _jpype"
but in the jpype there was no file named _jpype.py

Version is 1.4.1 in the init file.

[Thrameos]

All of the wheels ship with _jpype.{arch}.so. It is the shared library that is used for the back end. It seems like your site has a broken install which is missing the backend.

JPype install requires _jpype.so, org.jpype.jar and jpype\ in the site install directory.

[vigneshr3212]

Hi @GuptaNaman1998 ... Im also facing the same issue..Unable to import module 'lambda_function': No module named '_jpype' can u please help me out. My deployment package structure is

[GuptaNaman1998]

Hi @vigneshr3212 ,

The resolution to my issue was via 2 routes. ( please bear in mind that my objective of using jpype was to connect to databricks)

1. AWS previously used to preinstall the JVM package on the underlying machines running lambdas, but with the newer releases in order to reduce the machine storage on which the lambda runs, they removed the JVM altogether. (python 3.7 and lower should have this JVM installed)
2. As per the above point, AWS Lambda functions run on amazon-linux images and it may sound silly but compiling or packaging the jpype in linux machine can solve this.

pro tip : use docker to get these packages.

[vigneshr3212]

Hi @GuptaNaman1998, Thanks for your inputs, the error with jpype has resolved, but now im facing the erros JVM module no found, eventhough i package the JVM in linux machine
{
"errorMessage": "[Errno 0] JVM DLL not found: /var/task",
"errorType": "OSError",
"requestId": "275852d2-72f6-49fd-b900-d3d2aa7a94de",
"stackTrace": [
" File "/var/task/lambda_function.py", line 6, in lambda_handler\n jpype.startJVM(convertStrings=False, jvmpath='/var/task')\n",
" File "/var/task/jpype/_core.py", line 247, in startJVM\n _jpype.startup(jvmpath, jvmargs + extra_jvm_args,\n"
]
}

[GuptaNaman1998]

Hi @vigneshr3212
What is the lambda version you are using?
Error : jpype._jvmfinder.JVMNotFoundException: No JVM shared library file (jvm.dll) found. Try setting up the JAVA_HOME environment variable properly.
Resolution :

• It was communicated to me that this was an issue with AWS
• In an attempt to save space, the lambda python 3.8+ runtimes did not have JVM installed in them

So in order to make it work you'll have to write a code that will install the jvm and then use it or maybe use an instance with lambda python 3.7.