I believe that S3 Guard is OBE, but you still need to put the WAL on HDFS as S3 
does not support sync. If you put your WAL in S3, and you have a tserver 
failure, then it’s possible that you will lose data.

 

From: Christopher <ctubb...@apache.org> 
Sent: Wednesday, October 12, 2022 4:12 PM
To: user@accumulo.apache.org
Subject: Re: Accumulo On S3

 

Since S3 became strongly consistent, I think it would probably just work. But, 
obviously, we can't make any guarantees, especially about the behavior of 
software outside of our control. So, your experience may vary.

 

On Wed, Oct 12, 2022 at 12:28 PM Josh Clum <joshc...@gmail.com 
<mailto:joshc...@gmail.com> > wrote:

Hi,

 

Question on this post: 
https://accumulo.apache.org/blog/2019/09/10/accumulo-S3-notes.html 

 

It's been a long time and it looks like several of the merge requests are 
merged into master. 

 

The point about S3 Guard being needed seems OBE since S3 is strongly consistent 
and S3 Guard is deprecated at this point: 
https://issues.apache.org/jira/browse/HADOOP-17480

 

Should Accumulo on S3 with the metadata table and WAL logs in S3 work or are 
there still commits somewhere that won't be available until 2.1.0?

 

Thanks,

Josh

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