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ASF GitHub Bot commented on DRILL-4286: --------------------------------------- Github user arina-ielchiieva commented on the issue: https://github.com/apache/drill/pull/921 @dvjyothsna all tests has passed. Though there is significant performance degradation. Before your changes unit test run takes ~ 33 minutes, after ~ 1 hour 18 minutes. For example, exec package: before `[INFO] exec/Java Execution Engine ......................... SUCCESS [17:14 min]`, after `[INFO] exec/Java Execution Engine ......................... SUCCESS [56:45 min]`. Since you did not add that many unit tests, could you please explain the reason of such performance degradation and ideally fix it. Attached two unit tests outputs in Jira. > Have an ability to put server in quiescent mode of operation > ------------------------------------------------------------ > > Key: DRILL-4286 > URL: https://issues.apache.org/jira/browse/DRILL-4286 > Project: Apache Drill > Issue Type: New Feature > Components: Execution - Flow > Affects Versions: 1.11.0 > Reporter: Victoria Markman > Assignee: Venkata Jyothsna Donapati > Labels: doc-impacting, ready-to-commit > Fix For: 1.12.0 > > Attachments: consoleText.txt > > > I think drill will benefit from mode of operation that is called "quiescent" > in some databases. > From IBM Informix server documentation: > {code} > Change gracefully from online to quiescent mode > Take the database server gracefully from online mode to quiescent mode to > restrict access to the database server without interrupting current > processing. After you perform this task, the database server sets a flag that > prevents new sessions from gaining access to the database server. The current > sessions are allowed to finish processing. After you initiate the mode > change, it cannot be canceled. During the mode change from online to > quiescent, the database server is considered to be in Shutdown mode. > {code} > This is different from shutdown, when processes are terminated. -- This message was sent by Atlassian JIRA (v6.4.14#64029)