phoenix-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mujtaba Chohan <>
Subject Re: Number of regions in SYSTEM.SEQUENCE
Date Tue, 22 Sep 2015 18:32:28 GMT
Since Phoenix 4.5.x default has been changed for
phoenix.sequence.saltBuckets to not split sequence table. See this
commit. For older versions you can drop sequence table and reconnect with
setting client side phoenix.sequence.saltBuckets property.

On Tue, Sep 22, 2015 at 11:14 AM, Michael McAllister <> wrote:

> Hi
> By default SYSTEM.SEQUENCE is installed with 256 regions. In an
> environment where you don’t have a large number of tables and regions
> (yet), the end result of this seems to be that with hbase
> balance_switch=true, you end up with a lot of region servers with nothing
> but empty SYSTEM.SEQUENCE regions on them. That mans inefficient use of our
> cluster.
> Have there been any best practices developed as to how to deal with this
> situation?
> Michael McAllister
> Staff Data Warehouse Engineer | Decision Systems
> | C: 512.423.7447 | skype: michael.mcallister.ha
> <> | webex: https://h.a/mikewebex
> This electronic communication (including any attachment) is confidential.
> If you are not an intended recipient of this communication, please be
> advised that any disclosure, dissemination, distribution, copying or other
> use of this communication or any attachment is strictly prohibited.  If you
> have received this communication in error, please notify the sender
> immediately by reply e-mail and promptly destroy all electronic and printed
> copies of this communication and any attachment.

View raw message