Resolved! Job fails with "The spark driver has stopped unexpectedly and is restarting. Your notebook will be automatically reattached."
No other output is available, not even output from cells that did run successfully. Also, I'm unable to connect to spark ui or view the logs. It makes an attempt to load each of them, but after some time an error message appears saying it's unable ...
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most of the time it's out of memory on driver node. check over all the drive log, data node log in Spark UI. And check if u r collecting huge data to drive node, e.g. collect()
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