I want to execute a select query in Hive, but it took so long I decided to check my table lock status. Apparently the table has been locked by some ongoing queries.
I know in such cases SQL has with (nolock) that I can apply on a table. Is there something similar or equivalent in hive ?
Sample sql query : select * from table a with (nolock)
Equivalent query in hive is what I am looking for ?
You can control concurrency locking with hive.support.concurrency property. See: https://cwiki.apache.org/confluence/display/hive/configuration+properties#ConfigurationProperties-hive.support.concurrency
In your case, just set it to false (true is the default) before executing the query:
set hive.support.concurrency=false
You can confirm that concurrency is turn off by looking into hive_beeline log for the following line:
INFO : Concurrency mode is disabled, not creating a lock manager