修鹏的专栏

hadoop distcp hftp://nn.tvhadoop.xx.com:50070/user/nlp/warehouse/t_m_user_key_action    /user/nlp/warehouse/dw1

Exception in thread "main" java.io.IOException: Failed to replace a bad datanode on the existing pipeline due to no more good datanodes being available to try. (Nodes: current=[10.10.22.17:50010, 10.1

1、hbase0.96版本后删除了

export HADOOP_ROOT_LOGGER=DEBUG,console调试利器

1、数据分区存储（region）2、各种过滤器

两种方式：一、通过修改表DDL：alter table t_m_cc set location 'hdfs://heracles/user/video-mvc/hive/warehouse/t_m_cc'二、直接修改hive 的meta info:update `DBS` set `DB_LOCATION_URI` = replace(DB_LOCATION_URI,"oldp