[jira] [Updated] (PHOENIX-4113) Killing forked JVM may cause resources to be not released

["Samarth Jain (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-4113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Samarth Jain updated PHOENIX-4113:
----------------------------------
    Attachment: PHOENIX-4113_4.x-HBase-0.98.patch

> Killing forked JVM may cause resources to be not released
> ---------------------------------------------------------
>
>                 Key: PHOENIX-4113
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4113
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Samarth Jain
>            Assignee: Samarth Jain
>         Attachments: PHOENIX-4113_4.x-HBase-0.98.patch
>
>
> We have a <shutdown>kill</shutdown> configured in pom which behind the scenes calls 
> {code}
> java.lang.Runtime.halt(1)
> {code}
> We also have a shutdown hook which is calling halt on the JVM.
> {code}
> private static String checkClusterInitialized(ReadOnlyProps serverProps) throws Exception {
>         if (!clusterInitialized) {
>             url = setUpTestCluster(config, serverProps);
>             clusterInitialized = true;
>             Runtime.getRuntime().addShutdownHook(new Thread() {
>                 @Override
>                 public void run() {
>                     logger.info("SHUTDOWN: halting JVM now");
>                     Runtime.getRuntime().halt(0);
>                 }
>             });
>         }
>         return url;
>     }
> {code}
> This causes JVM to not execute all shutdown hooks which in turn would cause the JVM process to not release all the system resources (network ports, file handles, etc) it was using. If OS is not able to clean up these orphaned resources soon enough, it could cause subsequent new JVM processes to run into resource issues.



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