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hive 锁表问题

报错如下:

Unable to acquire IMPLICIT, EXCLUSIVE lock dms@pc_user_msg@month=201611 after 100 attempts.

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显示dms库下的pc_user_msg表分区month=201611被锁住了,

查看是否被锁:

show locks pc_user_msg;

列出相关查看锁表语句:

  • SHOW LOCKS <TABLE_NAME>;
  • SHOW LOCKS <TABLE_NAME> extended;
  • SHOW LOCKS <TABLE_NAME> PARTITION (<PARTITION_DESC>);
  • SHOW LOCKS <TABLE_NAME> PARTITION (<PARTITION_DESC>) extended

解决办法:

关闭锁机制:

set hive.support.concurrency=false; 默认为true

参考文章:

http://blog.csdn.net/techchan/article/details/50426743

hive 锁表问题