[ https://issues.apache.org/jira/browse/HBASE-7386?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gregory Chanan updated HBASE-7386: ---------------------------------- Attachment: HBASE-7386-v0.patch * Attached HBASE-7386-v0* Does the following: -Rips out the script changes made by HBASE-5844 and HBASE-5926 - Adds a new command to the master "supervise" which does clean + start. It should probably be called "autorestart" but that is taken by the script. Todos: - Need to include supervisor configs. I'll do that separately as I'm not sure whether we want them to be samples or full-fledged configs people can use. - I didn't pull out "autorestart" from the scripts, but it's probably broken by this. > Investigate providing some supervisor support for znode deletion > ---------------------------------------------------------------- > > Key: HBASE-7386 > URL: https://issues.apache.org/jira/browse/HBASE-7386 > Project: HBase > Issue Type: Task > Components: master, regionserver, scripts > Reporter: Gregory Chanan > Assignee: Gregory Chanan > Fix For: 0.96.0 > > Attachments: HBASE-7386-v0.patch > > > There a couple of JIRAs for deleting the znode on a process failure: > HBASE-5844 (RS) > HBASE-5926 (Master) > which are pretty neat; on process failure, they delete the znode of the > underlying process so HBase can recover faster. > These JIRAs were implemented via the startup scripts; i.e. the script hangs > around and waits for the process to exit, then deletes the znode. > There are a few problems associated with this approach, as listed in the > below JIRAs: > 1) Hides startup output in script > https://issues.apache.org/jira/browse/HBASE-5844?focusedCommentId=13463401&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13463401 > 2) two hbase processes listed per launched daemon > https://issues.apache.org/jira/browse/HBASE-5844?focusedCommentId=13463409&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13463409 > 3) Not run by a real supervisor > https://issues.apache.org/jira/browse/HBASE-5844?focusedCommentId=13463409&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13463409 > 4) Weird output after kill -9 actual process in standalone mode > https://issues.apache.org/jira/browse/HBASE-5926?focusedCommentId=13506801&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13506801 > 5) Can kill existing RS if called again > https://issues.apache.org/jira/browse/HBASE-5844?focusedCommentId=13463401&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13463401 > 6) Hides stdout/stderr[6] > https://issues.apache.org/jira/browse/HBASE-5844?focusedCommentId=13506832&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13506832 > I suspect running in via something like supervisor.d can solve these issues > if we provide the right support. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira