[uhadoop@10-13-109-236 subdir26]$ $HADOOP_HOME/bin/hadoop fs -cat /data/flumeEvents/FlumeData.1559805156238
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.hadoop.security.authentication.util.KerberosUtil (file:/data/hadoop-2.9.2/share/hadoop/common/lib/hadoop-auth-2.9.2.jar) to method sun.security.krb5.Config.getInstance()
WARNING: Please consider reporting this to the maintainers of org.apache.hadoop.security.authentication.util.KerberosUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
SEQ!org.apache.hadoop.io.LongWritable"org.apache.hadoop.io.BytesWritable? DǔÿU?X.k+¡?random_bodyFlume1k+¡?random_bodyFlume12ÿÿÿÿ? DǔÿU?X麐[uhadoop@10-13-109-236 subdir26]$
http://hadoop.apache.org/docs/current/api/org/apache/hadoop/io/LongWritable.html
SEQ!org.apache.hadoop.io.LongWritable
原文：https://www.cnblogs.com/yuanjiangw/p/10986205.html