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ASF GitHub Bot commented on HAWQ-763: ------------------------------------- Github user hsyuan commented on the pull request: https://github.com/apache/incubator-hawq/pull/644#issuecomment-222340582 Create HAWQ JIRA issue for this PR: https://issues.apache.org/jira/browse/HAWQ-763 @vraghavan78 please change this PR title and commit message starting with `HAWQ-763. Remove traceflag that allows ORCA to run in multiple threads`, which follows the apache HAWQ PR requirement. > 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 > 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)