NullPointerException at water.H2ONode.openChan(H2ONode.java:417) after upgrade to H2O 3.22.0.3

Description

NPE happens here
https://github.com/h2oai/h2o-3/blob/02b183e7d6d7c83301486ca2fd0ce15b61294379/h2o-core/src/main/java/water/H2ONode.java#L417

when calling
hc.as_h2o_frame() (from Sparkling Water 2.3.19, connected to h2o external backend cluster).

Same code worked fine before upgrade (from SW 2.3.13).

See full exception here -

Activity

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Jakub Hava
January 2, 2019, 10:13 AM

thanks for reporting. I'm still unable to reproduce, even though it's just NPE.

Having a full YARN logs of the external H2O cluster would help us a lot.

Jakub Hava
January 2, 2019, 11:09 AM

Was able to reproduce, will work on a fix soon

Ruslan Dautkhanov
January 2, 2019, 3:34 PM

Thank you

Is there is a workaround for this issue? Otherwise we will have to downgrade.

Jakub Hava
January 2, 2019, 6:13 PM

I was just able to repro at this stage, not sure about workaround. For now, please downgrade

Jakub Hava
January 3, 2019, 11:08 AM

Fix is done, will be in the next release

Fixed

Assignee

Jakub Hava

Reporter

Ruslan Dautkhanov

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