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From "Zheng Yang (Jira)" <j...@apache.org>
Subject [jira] [Updated] (KYLIN-4290) Add file lock to kylin startup script to avoid starting multiple instances on one node
Date Tue, 10 Dec 2019 12:00:13 GMT

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

Zheng Yang updated KYLIN-4290:
------------------------------
    Affects Version/s:     (was: v2.6.5)
                           (was: v3.0.0)
                       v2.6.0

> 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
>            Priority: Minor
>             Fix For: v3.0.0, v2.6.5
>
>
> 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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