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log4j: WARN Please initialize the log4j system properly


I am running GATK CNV, and got the following error:
log4j: WARN No appenders could be found for logger (org.broadinstitute.hdf5.HDF5library).
log4j: WARN Please initialize the log4j system properly.
log4j: WARN See for more info.

I hope that the above WARNING did not affect my GATK run and the resutls.

Can someone please also tell me know to exactly fix the above the WARNING. i could not find the answer from

Thank you very much & best regards,


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