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Posted to issues@kylin.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/12/10 12:03:00 UTC
[jira] [Commented] (KYLIN-4290) Add file lock to kylin startup
script to avoid starting multiple instances on one node
[ https://issues.apache.org/jira/browse/KYLIN-4290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16992482#comment-16992482 ]
ASF GitHub Bot commented on KYLIN-4290:
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zenoyang commented on pull request #985: KYLIN-4290: Add file lock to kylin startup script to avoid starting multiple instances on one node
URL: https://github.com/apache/kylin/pull/985
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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> 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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