Bruce,

 

  There are no future planned releases for the 1.x line. In 2.1 Scan
Executors[1] offer a way for the user to configure the resource pools used
for scanning a table. You could use a prioritizer to influence the execution
order of scans in the default scan executor, or setup different scan
executors for different tables, or use both in some manner.

 

[1] https://accumulo.apache.org/docs/2.x/administration/scan-executors

 

Dave

 

 

From: McClure, Bruce MR 2 via user <user@accumulo.apache.org> 
Sent: Monday, January 22, 2024 11:44 PM
To: user@accumulo.apache.org
Subject: Scan thread resource management [SEC=UNOFFICIAL]

 

UNOFFICIAL

Hi,

 

I have seen that there was a fix in 1.10.3 for #3226   which also fixed an
issue by again using the "fair" semaphore for scan threads.

 

However, is there any other current or future planned ways to improve or
manage contention between scan threads such as the tendency for a scans on a
larger table to monopolise the threads preventing scans on smaller tables
from making progress?

 

Thanks,

 

Bruce.

 

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