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From "jiatao.tao (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (KYLIN-3562) TS conflict when kylin update metadata in HBase
Date Tue, 25 Sep 2018 11:16:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16627165#comment-16627165
] 

jiatao.tao edited comment on KYLIN-3562 at 9/25/18 11:15 AM:
-------------------------------------------------------------

Hi [~baibaichen], I think your thought about KylinAuthenticationProvider.authenticate is pretty
right. The updating operation is pretty confusing and useless, I think may be remove this
is the right path.

For KylinUserService, it actually just rename UserService(you can see UserService's git log),
we extracted this for preparing better LDAP support.


was (Author: aron.tao):
Hi [~baibaichen], I think your thought about KylinAuthenticationProvider.authenticate is right.
The updating operation is pretty confusing and useless, I think may be remove this is the
right path.

For KylinUserService, it actually just rename UserService(you can see UserService's git log),
we extracted this for better LDAP support preparation.

> TS conflict when kylin update metadata in HBase
> -----------------------------------------------
>
>                 Key: KYLIN-3562
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3562
>             Project: Kylin
>          Issue Type: Bug
>    Affects Versions: v2.4.0
>            Reporter: Lingang Deng
>            Priority: Major
>         Attachments: image-2018-09-17-16-40-56-212.png, image-2018-09-25-15-03-51-009.png,
image-2018-09-25-16-43-50-277.png
>
>
> Error log was as follows,
> {code:java}
> org.apache.kylin.common.persistence.WriteConflictException: Overwriting conflict /user/admin,
expect old TS 1536928877043, but it is 1536928907207
>          at org.apache.kylin.storage.hbase.HBaseResourceStore.checkAndPutResourceImpl(HBaseResourceStore.java:325)
>          at org.apache.kylin.common.persistence.ResourceStore.checkAndPutResourceCheckpoint(ResourceStore.java:318)
>          at org.apache.kylin.common.persistence.ResourceStore.putResource(ResourceStore.java:303)
>          at org.apache.kylin.common.persistence.ResourceStore.putResource(ResourceStore.java:282)
>          at org.apache.kylin.metadata.cachesync.CachedCrudAssist.save(CachedCrudAssist.java:192){code}
>  
> what disturbs me the most was that the error was happened several hours,  then my all
build job and query job failed.



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