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Posted to dev@hive.apache.org by "Chinna Rao Lalam (JIRA)" <ji...@apache.org> on 2011/08/22 20:21:31 UTC
[jira] [Commented] (HIVE-2017) Driver.execute() should maintaining
SessionState in case of runtime errors
[ https://issues.apache.org/jira/browse/HIVE-2017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13088885#comment-13088885 ]
Chinna Rao Lalam commented on HIVE-2017:
----------------------------------------
while processing two parallel tasks if one of the task fails the Driver.taskCleanup() will call system.exit() this will shutdown the jvm so it is replaced with the logic to stop the remaining tasks.. Here need to cleanup 2 kinds of tasks one is non-mr tasks and mr tasks. For stopping non-mr tasks used the thread.interrupt() because every non-mr task will be executed as a thread and for mr tasks maintained a variable called jobKillUri's this variable will track the spawned job kill uri, in taskCleanup() if it is a mr task using this variable kill the job.
> Driver.execute() should maintaining SessionState in case of runtime errors
> --------------------------------------------------------------------------
>
> Key: HIVE-2017
> URL: https://issues.apache.org/jira/browse/HIVE-2017
> Project: Hive
> Issue Type: Bug
> Reporter: Ning Zhang
> Assignee: Chinna Rao Lalam
> Attachments: HIVE-2017.1.patch
>
>
> Here's a snippet from Driver.execute():
> {code}
> // TODO: This error messaging is not very informative. Fix that.
> errorMessage = "FAILED: Execution Error, return code " + exitVal + " from "
> + tsk.getClass().getName();
> SQLState = "08S01";
> console.printError(errorMessage);
> if (running.size() != 0) {
> taskCleanup();
> }
> return 9;
> {code}
> I simply returned in case of runtime errors without maintaining SessionState. It could cause resource leak mentioned in HIVE-1959.
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