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Posted to user@cassandra.apache.org by SE...@homedepot.com on 2015/07/01 16:28:58 UTC
RE: How to measure disk space used by a keyspace?
That’s ok for a single node, but to answer the question, “how big is my table across the cluster?” it would be much better if the cluster could provide an answer.
Sean Durity
From: Jonathan Haddad [mailto:jon@jonhaddad.com]
Sent: Monday, June 29, 2015 8:15 AM
To: user
Subject: Re: How to measure disk space used by a keyspace?
If you're looking to measure actual disk space, I'd use the du command, assuming you're on a linux: http://linuxconfig.org/du-1-manual-page
On Mon, Jun 29, 2015 at 2:26 AM shahab <sh...@gmail.com>> wrote:
Hi,
Probably this question has been already asked in the mailing list, but I couldn't find it.
The question is how to measure disk-space used by a keyspace, column family wise, excluding snapshots?
best,
/Shahab
________________________________
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Re: How to measure disk space used by a keyspace?
Posted by Jan <cn...@yahoo.com>.
nodetool cfstats
would be your best bet. Sum all the column families info., within a keyspace to get to the number you are looking for.
Jan/
On Wednesday, July 1, 2015 9:05 AM, graham sanderson <gr...@vast.com> wrote:
If you are pushing metric data to graphite, there is
org.apache.cassandra.metrics.keyspace.<keyspace_name>.LiveDiskSpaceUsed.value
… for each node; Easy enough to graph the sum across machines.
Metrics/JMX are tied together in C*, so there is an equivalent value exposed via JMX… I don’t know what it is called off the top of my head, but would be something similar to the above.
On Jul 1, 2015, at 9:28 AM, SEAN_R_DURITY@homedepot.com wrote:
That’s ok for a single node, but to answer the question, “how big is my table across the cluster?” it would be much better if the cluster could provide an answer. Sean Durity From: Jonathan Haddad [mailto:jon@jonhaddad.com]
Sent: Monday, June 29, 2015 8:15 AM
To: user
Subject: Re: How to measure disk space used by a keyspace? If you're looking to measure actual disk space, I'd use the du command, assuming you're on a linux: http://linuxconfig.org/du-1-manual-page On Mon, Jun 29, 2015 at 2:26 AM shahab <sh...@gmail.com> wrote:
Hi, Probably this question has been already asked in the mailing list, but I couldn't find it. The question is how to measure disk-space used by a keyspace, column family wise, excluding snapshots? best,/Shahab
The information in this Internet Email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this Email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this Email are subject to the terms and conditions expressed in any applicable governing The Home Depot terms of business or client engagement letter. The Home Depot disclaims all responsibility and liability for the accuracy and content of this attachment and for any damages or losses arising from any inaccuracies, errors, viruses, e.g., worms, trojan horses, etc., or other items of a destructive nature, which may be contained in this attachment and shall not be liable for direct, indirect, consequential or special damages in connection with this e-mail message or its attachment.
Re: How to measure disk space used by a keyspace?
Posted by graham sanderson <gr...@vast.com>.
If you are pushing metric data to graphite, there is
org.apache.cassandra.metrics.keyspace.<keyspace_name>.LiveDiskSpaceUsed.value
… for each node; Easy enough to graph the sum across machines.
Metrics/JMX are tied together in C*, so there is an equivalent value exposed via JMX… I don’t know what it is called off the top of my head, but would be something similar to the above.
> On Jul 1, 2015, at 9:28 AM, SEAN_R_DURITY@homedepot.com wrote:
>
> That’s ok for a single node, but to answer the question, “how big is my table across the cluster?” it would be much better if the cluster could provide an answer.
>
> Sean Durity
>
> From: Jonathan Haddad [mailto:jon@jonhaddad.com <ma...@jonhaddad.com>]
> Sent: Monday, June 29, 2015 8:15 AM
> To: user
> Subject: Re: How to measure disk space used by a keyspace?
>
> If you're looking to measure actual disk space, I'd use the du command, assuming you're on a linux: http://linuxconfig.org/du-1-manual-page <http://linuxconfig.org/du-1-manual-page>
>
> On Mon, Jun 29, 2015 at 2:26 AM shahab <shahab.mokari@gmail.com <ma...@gmail.com>> wrote:
> Hi,
>
> Probably this question has been already asked in the mailing list, but I couldn't find it.
>
> The question is how to measure disk-space used by a keyspace, column family wise, excluding snapshots?
>
> best,
> /Shahab
>
>
> The information in this Internet Email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this Email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this Email are subject to the terms and conditions expressed in any applicable governing The Home Depot terms of business or client engagement letter. The Home Depot disclaims all responsibility and liability for the accuracy and content of this attachment and for any damages or losses arising from any inaccuracies, errors, viruses, e.g., worms, trojan horses, etc., or other items of a destructive nature, which may be contained in this attachment and shall not be liable for direct, indirect, consequential or special damages in connection with this e-mail message or its attachment.