[jira] [Updated] (KYLIN-923) FetcherRunner will never run again if encountered exception during running

["Luke Han (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luke Han updated KYLIN-923:
---------------------------
    Fix Version/s: v1.0

> FetcherRunner will never run again if encountered exception during running
> --------------------------------------------------------------------------
>
>                 Key: KYLIN-923
>                 URL: https://issues.apache.org/jira/browse/KYLIN-923
>             Project: Kylin
>          Issue Type: Bug
>          Components: Job Engine
>    Affects Versions: v0.7.2
>            Reporter: Yerui Sun
>            Assignee: ZhouQianhao
>             Fix For: v1.0
>
>         Attachments: KYLIN-923-0.7-staging.patch, KYLIN-923-0.8.patch, KYLIN-923.patch
>
>
> {{FetcherRunner}} was scheduled at fix rate in {{fetcherPool}} which is a {{ScheduledExecutorService}}. In every running, {{FetcherRunner}} fetch all jobs from {{executableManager}}, and submit READY jobs to execute. 
> If  exceptions encountered during running, such as {{executableManager.getAllJobIds()}} or {{executableManager.getAllJobIds()}}, the {{FetcherRunner}} will never run again in {{fetcherPool}},  that was explained in comment of {{ScheduledExecutorService.scheduleAtFixedRate}}.
> The solution to resolve this issue is simple, that catch all {{Exception}} during {{FetcherRunner.run()}}. I will upload a patch later.



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