[jira] [Closed] (KYLIN-4290) Add file lock to kylin startup script to avoid starting multiple instances on one node

["Xiaoxiang Yu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-4290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiaoxiang Yu closed KYLIN-4290.
-------------------------------

Resolved in release 3.1.0 (2020-07-03)

> Add file lock to kylin startup script to avoid starting multiple instances on one node
> --------------------------------------------------------------------------------------
>
>                 Key: KYLIN-4290
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4290
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Tools, Build and Test
>    Affects Versions: v2.6.0
>            Reporter: Zheng Yang
>            Assignee: Zheng Yang
>            Priority: Minor
>             Fix For: v2.6.5, v3.1.0
>
>
> When we restart the Kylin instance, due to the slow start of kylin, some monitoring scripts fail to detect the surviving kylin, and will also start the kylin instance. As a result, there are multiple kylin instances on a node.
> By adding a file lock to the startup script (kylin.sh), it is guaranteed that only one kylin instance will be started when concurrent startup on a node.



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