Lenni Kuff created HIVE-14907: --------------------------------- Summary: Hive Metastore should use repeatable-read consistency level Key: HIVE-14907 URL: https://issues.apache.org/jira/browse/HIVE-14907 Project: Hive Issue Type: Bug Components: Metastore Affects Versions: 2.2.0 Reporter: Lenni Kuff
Currently HMS uses the "read-committed" consistency level which is the default for DataNucleus. This could cause potential problems since the state visible to each transaction can actually see updates from other transactions, so it is very difficult to reason about any code that reads multiple pieces of data. Instead it should use "repeatable-read" consistency which guarantees that any transaction only sees the state at the beginning of a transaction plus any updates done within a transaction. -- This message was sent by Atlassian JIRA (v6.3.4#6332)