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Posted to dev@oozie.apache.org by "Mona Chitnis (JIRA)" <ji...@apache.org> on 2014/06/10 01:34:01 UTC
[jira] [Commented] (OOZIE-1778) Rollback option for XCommand
[ https://issues.apache.org/jira/browse/OOZIE-1778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025929#comment-14025929 ]
Mona Chitnis commented on OOZIE-1778:
-------------------------------------
got the use case. sounds good
> Rollback option for XCommand
> ----------------------------
>
> Key: OOZIE-1778
> URL: https://issues.apache.org/jira/browse/OOZIE-1778
> Project: Oozie
> Issue Type: Bug
> Reporter: Purshotam Shah
>
> Currently if we issue a command at bundle level, which set the pending for bundle action and issue child command.
> If child command succeed, then it's all good. But if child command at pre-check or acquiring lock fails, then there is no way to update parent.
> In this scenario, bundle action and remain in pending and will cause unexpected behavior.
> We should do something like
> {code:java}
> XCommand.call() throws CommandException {
> try {
> eagerVerifyPrecondition();
> acquireLockCron.start();
> acquireLock();
> acquireLockCron.stop();
> loadState();
> verifyPrecondition();
> ret = execute();
> }
> catch(Throwable e){
> handleFailure();
> }
> }
> {code}
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