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ASF GitHub Bot commented on DRILL-4286: --------------------------------------- Github user paul-rogers commented on a diff in the pull request: https://github.com/apache/drill/pull/921#discussion_r150974512 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/server/DrillbitContext.java --- @@ -157,10 +157,29 @@ public DrillConfig getConfig() { return context.getConfig(); } - public Collection<DrillbitEndpoint> getBits() { + public Collection<DrillbitEndpoint> getAvailableBits() { return coord.getAvailableEndpoints(); } + public Collection<DrillbitEndpoint> getBits() { + return coord.getOnlineEndPoints(); + } + + public boolean isOnline(DrillbitEndpoint endpoint) { return endpoint.getState().equals(DrillbitEndpoint.State.ONLINE); } + + public boolean isForemanOnline() { + DrillbitEndpoint foreman = getEndpoint(); + Collection<DrillbitEndpoint> dbs = getAvailableBits(); + for( DrillbitEndpoint db : dbs) { + if( db.getAddress().equals(foreman.getAddress()) && db.getUserPort() == foreman.getUserPort()) { + if( !isOnline(db)) { --- End diff -- `if( !isOnline...` --> `if (! isOnline...` > 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 > Reporter: Victoria Markman > Assignee: Venkata Jyothsna Donapati > > 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)