[ https://issues.apache.org/jira/browse/HAWQ-763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Haisheng Yuan resolved HAWQ-763. -------------------------------- Resolution: Fixed > Remove traceflag that allows ORCA to run in multiple threads > ------------------------------------------------------------ > > Key: HAWQ-763 > URL: https://issues.apache.org/jira/browse/HAWQ-763 > Project: Apache HAWQ > Issue Type: Improvement > Components: Optimizer > Reporter: Haisheng Yuan > Assignee: Lei Chang > > We are integrating VEM with GPOS memory allocator. VMEM is not thread safe. > So, ORCA/GPOS also need to be single threaded. Currently, HAWQ users are > using only the single threaded Orca. > So need to remove the traceflag that allows ORCA to run in multiple threads > so that HAWQ users do not accidentally run ORCA in multiple threads. -- This message was sent by Atlassian JIRA (v6.3.4#6332)