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https://issues.apache.org/jira/browse/DL-194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15937668#comment-15937668
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Sijie Guo commented on DL-194:
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[~xiaohaoliang] it is a synchronous call. but it doesn't really block #write().
How does your application look like when writing and truncating?
> 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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