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From "Sijie Guo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DL-194) I want to truncate the log until "Transaction ID" (not DLSN). How can I do ?
Date Thu, 23 Mar 2017 02:58:41 GMT

    [ https://issues.apache.org/jira/browse/DL-194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15937606#comment-15937606
] 

Sijie Guo commented on DL-194:
------------------------------

[~xiaohaoliang] That's a good point. we should also support truncate by transaction id in
AsyncLogWriter. 

Right now, in DistributedLogManager, https://github.com/apache/incubator-distributedlog/blob/master/distributedlog-core/src/main/java/org/apache/distributedlog/DistributedLogManager.java#L299
. There indeed is a method that can do what you want. You can use it for now.

Let me know if you have any more questions.

> I want to truncate the log until "Transaction ID" (not DLSN).  How can I do ? 
> ------------------------------------------------------------------------------
>
>                 Key: DL-194
>                 URL: https://issues.apache.org/jira/browse/DL-194
>             Project: DistributedLog
>          Issue Type: Improvement
>            Reporter: xiaohao liang
>             Fix For: 0.5.0
>
>
> Now , I want to truncate the log until "Transaction ID" (not DLSN), 
> I find that :
> ```java
> DLSN truncateDLSN = ...;
> Future<DLSN> truncateFuture = writer.truncate(truncateDLSN);
> // wait for truncation result
> Await.result(truncateFuture);
> ```
> http://distributedlog.incubator.apache.org/docs/latest/user_guide/api/core.html#asynclogwriter

> So,ow can I do ? 



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