[jira] [Updated] (HADOOP-14855) Hadoop scripts may errantly believe a daemon is still running, preventing it from starting
[ https://issues.apache.org/jira/browse/HADOOP-14855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Miklos Szegedi updated HADOOP-14855: Resolution: Fixed Hadoop Flags: Reviewed Fix Version/s: 3.2.0 Status: Resolved (was: Patch Available) > Hadoop scripts may errantly believe a daemon is still running, preventing it > from starting > -- > > Key: HADOOP-14855 > URL: https://issues.apache.org/jira/browse/HADOOP-14855 > Project: Hadoop Common > Issue Type: Bug > Components: scripts >Affects Versions: 3.0.0-alpha4 >Reporter: Aaron T. Myers >Assignee: Robert Kanter >Priority: Major > Fix For: 3.2.0 > > Attachments: HADOOP-14855.001.patch, HADOOP-14855.002.patch > > > I encountered a case recently where the NN wouldn't start, with the error > message "namenode is running as process 16769. Stop it first." In fact the > NN was not running at all, but rather another long-running process was > running with this pid. > It looks to me like our scripts just check to see if _any_ process is running > with the pid that the NN (or any Hadoop daemon) most recently ran with. This > is clearly not a fool-proof way of checking to see if a particular type of > daemon is now running, as some other process could start running with the > same pid since the daemon in question was previously shut down. -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14855) Hadoop scripts may errantly believe a daemon is still running, preventing it from starting
[ https://issues.apache.org/jira/browse/HADOOP-14855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Robert Kanter updated HADOOP-14855: --- Attachment: HADOOP-14855.002.patch > Hadoop scripts may errantly believe a daemon is still running, preventing it > from starting > -- > > Key: HADOOP-14855 > URL: https://issues.apache.org/jira/browse/HADOOP-14855 > Project: Hadoop Common > Issue Type: Bug > Components: scripts >Affects Versions: 3.0.0-alpha4 >Reporter: Aaron T. Myers >Assignee: Robert Kanter >Priority: Major > Attachments: HADOOP-14855.001.patch, HADOOP-14855.002.patch > > > I encountered a case recently where the NN wouldn't start, with the error > message "namenode is running as process 16769. Stop it first." In fact the > NN was not running at all, but rather another long-running process was > running with this pid. > It looks to me like our scripts just check to see if _any_ process is running > with the pid that the NN (or any Hadoop daemon) most recently ran with. This > is clearly not a fool-proof way of checking to see if a particular type of > daemon is now running, as some other process could start running with the > same pid since the daemon in question was previously shut down. -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14855) Hadoop scripts may errantly believe a daemon is still running, preventing it from starting
[ https://issues.apache.org/jira/browse/HADOOP-14855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Robert Kanter updated HADOOP-14855: --- Status: Patch Available (was: Open) > Hadoop scripts may errantly believe a daemon is still running, preventing it > from starting > -- > > Key: HADOOP-14855 > URL: https://issues.apache.org/jira/browse/HADOOP-14855 > Project: Hadoop Common > Issue Type: Bug > Components: scripts >Affects Versions: 3.0.0-alpha4 >Reporter: Aaron T. Myers >Assignee: Robert Kanter >Priority: Major > Attachments: HADOOP-14855.001.patch > > > I encountered a case recently where the NN wouldn't start, with the error > message "namenode is running as process 16769. Stop it first." In fact the > NN was not running at all, but rather another long-running process was > running with this pid. > It looks to me like our scripts just check to see if _any_ process is running > with the pid that the NN (or any Hadoop daemon) most recently ran with. This > is clearly not a fool-proof way of checking to see if a particular type of > daemon is now running, as some other process could start running with the > same pid since the daemon in question was previously shut down. -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-14855) Hadoop scripts may errantly believe a daemon is still running, preventing it from starting
[ https://issues.apache.org/jira/browse/HADOOP-14855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Robert Kanter updated HADOOP-14855: --- Attachment: HADOOP-14855.001.patch > Hadoop scripts may errantly believe a daemon is still running, preventing it > from starting > -- > > Key: HADOOP-14855 > URL: https://issues.apache.org/jira/browse/HADOOP-14855 > Project: Hadoop Common > Issue Type: Bug > Components: scripts >Affects Versions: 3.0.0-alpha4 >Reporter: Aaron T. Myers >Assignee: Robert Kanter >Priority: Major > Attachments: HADOOP-14855.001.patch > > > I encountered a case recently where the NN wouldn't start, with the error > message "namenode is running as process 16769. Stop it first." In fact the > NN was not running at all, but rather another long-running process was > running with this pid. > It looks to me like our scripts just check to see if _any_ process is running > with the pid that the NN (or any Hadoop daemon) most recently ran with. This > is clearly not a fool-proof way of checking to see if a particular type of > daemon is now running, as some other process could start running with the > same pid since the daemon in question was previously shut down. -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
