Pickling Error 599

[akash gupta]

Hi All,

I keep getting the below error for few of my task (not always). I am unable to understand what causes this issue. Is it because of celery or too many task.

 <MaybeEncodingError: Error sending result: '"(1, <ExceptionInfo: GremlinServerError('599: None')>, None)"'. Reason: ''PicklingError("Can\'t pickle <class \'gremlin_python.driver.protocol.GremlinServerError\'>: it\'s not the same object as gremlin_python.driver.protocol.GremlinServerError")''.>

billiard.pool.MaybeEncodingError: Error sending result: '"(1, <ExceptionInfo: GremlinServerError('599: None')>, None)"'. Reason: ''PicklingError("Can\'t pickle <class \'gremlin_python.driver.protocol.GremlinServerError\'>: it\'s not the same object as gremlin_python.driver.protocol.GremlinServerError")''.

The code where this error starts is:

vertices = self.g_reader.V(_vertex).repeat(__.out()).times(level).dedup().toList() 

Please let me know what am I doing wrong here and what this error means.

Regards.

[Stephen Mallette]

that's a curious error. i've never seen that before. i dont think we even have Pickle in our dependencies. 

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[HadoopMarc]

It seems to be a bug specific to the celery package that you use:

https://github.com/celery/celery/issues/3758

Somehow it cannot handle use-defined exceptions with a parameter passed to the constructor, like GremlinServerError.

Op vrijdag 23 juli 2021 om 21:54:28 UTC+2 schreef spmal...@gmail.com: