my log scraping was excluding this water.Dexception for some reason from the past. Scrape it correctly now
water.DException$DistributedException: from /172.16.2.173:55604; class water.DException$DistributedException: from /172.16.2.174:55604; class water.DException$DistributedException: from /172.16.2.175:55604; class water.AutoBuffer$AutoBufferException: null while mapping key hdfs://mr-0x6/datasets/airlines_multi/airlines_all.05p.8.csv
    at water.AutoBuffer.sendPartial(AutoBuffer.java:530)