hive中常见的错误2 - yingziaiai/SetupEnv GitHub Wiki

  1. Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000fae00000, 21757952, 0) 还需要继续研究ＪＶＭ这一块，

http://docs.oracle.com/cd/E22289_01/html/821-1274/configuring-the-default-jvm-and-java-arguments.html

ubuntu查看内存占用和查看cpu使用情况的简单方法(ubuntu内存管理)

http://stackoverflow.com/questions/76327/how-can-i-prevent-java-from-creating-hsperfdata-files

目前依旧没有解决，只有重启会好点

  1. http://blog.csdn.net/sunnyyoona/article/details/51648871

Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /home/xiaosi/hive/warehouse/recent_attention/result.txt could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation.

这个问题是由于datanode没有启动导致的，至于datanode为什么没有启动起来，去看另一篇博文：那些年踩过的Hadoop坑（http://blog.csdn.net/sunnyyoona/article/details/51659080）

  1. fuying@ubuntu2:/opt/BIGDATA/hadoop-2.5.0-cdh5.3.6$ sudo service mysql start Starting MySQL .... * The server quit without updating PID file (/var/lib/mysql/ubuntu2.pid).

  2. 外部表，内部表，分区表使用场景与注意细节：

http://blog.csdn.net/s646575997/article/details/51463065

http://blog.chinaunix.net/uid-77311-id-4586440.html

http://blog.csdn.net/jiedushi/article/details/6778521

http://blog.csdn.net/wisgood/article/details/17186139