Dickson, Matt MR 2013-08-29, 05:39
Eric Newton 2013-08-29, 13:22
The tablet of concern has 2000 tablets while all others have 1000 so it looks like the balancers aren't evening out the tablets per node as expected.
Is there a way to force the balancer to run or rectify this situation by moving tablets to alternate nodes?
From: Eric Newton [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 29 August 2013 23:23
To: [EMAIL PROTECTED]
Subject: Re: High Ingest on a single server [SEC=UNOFFICIAL]
The balancers that ship with accumulo attempt to keep an equal number of tablets on each server. An empty tablet, will be balanced with the same weight as a 50G tablet.
You can write a new balancer to take advantage of the properties of the tablets, and any expected hotspots you have.
On Thu, Aug 29, 2013 at 1:39 AM, Dickson, Matt MR <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
We are seeing a single server that has less entries than all the other nodes in the cluster. Accumulo now appears to be directing higher ingest tablets to this node and its now getting 7 times the ingest entries than all other nodes and is slowing or load. Does Accumulo attempt to balance disk usage across the nodes for a table by moving tablets and that is why we are seeing this node ingesting more?
If not, is it possible to make accumulo rebalance the ingest across all servers during a load?
John Vines 2013-09-02, 01:54
Josh Elser 2013-09-02, 02:52
Dickson, Matt MR 2013-09-02, 02:59
Josh Elser 2013-09-02, 05:00
David Medinets 2013-08-29, 10:38