Yes, currently the resultSet will contain all the rows, there is no fetch
size supported. This will change soon however since Cassandra 2.0 has some
paging support at the protocol level and the driver will make use of
that. But that won't be before 2.0.
As an aside, this kind of question about
Hi, all:
I use cassandra 1.2.4 and I have 4 nodes ring and use byte order partitioner.
I had inserted about 200G data in the ring previous days.
Today I write a program to scan the ring and then at the same time delete the
items that are scanned.
To my surprise, the cassandra cost more
Hi C* user list,
I have a curious recurring problem with Cassandra 1.2 and what seems like a GC
issue.
The cluster looks somewhat well balanced, all nodes are running HotSpot JVM
1.6.0_31-b04 and cassandra 1.2.3.
Address RackStatus State LoadOwns
10.2.3.6
Deletion is not really removing data, but it's adding tombstones
(markers) of deletion. They'll be later merged with existing data during
compaction and - in the end (see: gc_grace_seconds) - removed, but by
this time they'll take some space.
Hi,
I use the follow cmd to update gc_grace_seconds. It reports error! Why?
[default@WebSearch] update column family ScheduleInfoCF with gc_grace_seconds =
3600;
java.lang.IllegalArgumentException: No enum const class
org.apache.cassandra.cli.CliClient$ColumnFamilyArgument.GC_GRACE_SECONDS
Thank you!
It should be update column family ScheduleInfoCF with gc_grace = 3600;
Faint.
- 原始邮件 -
发件人: 杨辉强 huiqiangy...@yunrang.com
收件人: user@cassandra.apache.org
发送时间: 星期二, 2013年 7 月 16日 下午 6:15:12
主题: Re: Deletion use more space.
Hi,
I use the follow cmd to update gc_grace_seconds.
hi all
I trying to load data from cassandra with slice params option but ther are
no much info about how to use i. I found only a quick reference in
readme.txt in cassandra project .../examples/pig
*...*
*Slices on columns can also be specified:*
*grunt rows = LOAD
Hi everybody,
We are working on porting some life science applications to Cassandra, but
we have to deal with its limits managing huge queries. Our queries are
usually multiget_slice ones: many rows with many columns each.
We have seen system start to slower until the entry point node crashes
What's your replication factor? Can you check tp stats and net stats to see if
you are getting more mutations on these nodes ?
Sent from my iPhone
On Jul 16, 2013, at 3:18 PM, Jure Koren jure.ko...@zemanta.com wrote:
Hi C* user list,
I have a curious recurring problem with Cassandra 1.2
vnodes currently do not brings any noticeable benefits to outweight trouble
The main advantage of vnodes is that it lets you have flexibility with
respect to adding and removing nodes from your cluster without having to
rebalance your cluster (issuing a lot of moves). A shuffle is a lot of
Eric,
Unfortunately if you've got a non-vnode cluster and are trying to convert,
you are likely going to at least want, if not have to, run shuffle. It
isn't a pleasant situation when you run into that because in order for the
shuffle to execute safely and successfully you need to have
I don't think setting gc_grace_seconds to an hour is going to do what you'd
expect. After gc_grace_seconds, if you haven't run a repair within that
hour, the data you deleted will seem to have been undeleted.
Someone correct me if I'm wrong, but in order to order to completely delete
data and
The only time information is removed from the filesystem is during compaction.
Compaction can remove tombstones after gc_grace_seconds, which, could result in
reanimation of deleted data if the tombstone was never properly replicated to
other replicas. Repair will make sure tombstones are
Hello.
I have a cluster with 3 nodes and RF is 3. I've noticed that when I run a
repair on a node (I don't use -pr), all nodes are involved.
So, does this mean the other nodes are repaired as well? Do I still need to
run repair on the other 2 nodes inside the gc_grace_period?
Thanks,
André
if you've got a non-vnode cluster and are trying to convert, you are
likely going to at least want, if not have to, run shuffle
Fair enough. Running shuffle after upgrading to using vnodes is nearly
mandatory or else you'll run into troubles when adding more nodes (see this
Jira
Thanks Sylvain for answering the question from a Cassandra perspective.
I will use Datastax forum where appropiate. I have gone live with Cassandra so
I will not be bringing these things up anymore I hope.
Best Regards,
-Tony
From: Sylvain Lebresne
On Tue, Jul 16, 2013 at 4:46 AM, cesare cugnasco
cesare.cugna...@gmail.comwrote:
We are working on porting some life science applications to Cassandra,
but we have to deal with its limits managing huge queries. Our queries are
usually multiget_slice ones: many rows with many columns each.
On Tue, Jul 16, 2013 at 1:16 AM, Andrew Cobley a.e.cob...@dundee.ac.ukwrote:
I'm setting up a new test cluster using 2.0.0-beta1 and I noticed the
following behaviour with vnodes turned on. I bring up one node all well
and good. however if I bring up a second node, that can't contact the
On Tue, Jul 16, 2013 at 7:48 AM, André Cruz andre.c...@co.sapo.pt wrote:
I have a cluster with 3 nodes and RF is 3. I've noticed that when I run a
repair on a node (I don't use -pr), all nodes are involved.
So, does this mean the other nodes are repaired as well? Do I still need
to run
Righto !
Will do a JIRA report..
Many thanks
Andy
On 16 Jul 2013, at 18:50, Robert Coli
rc...@eventbrite.commailto:rc...@eventbrite.com
wrote:
On Tue, Jul 16, 2013 at 1:16 AM, Andrew Cobley
a.e.cob...@dundee.ac.ukmailto:a.e.cob...@dundee.ac.uk wrote:
I'm setting up a new test cluster using
Hello,
At least 2 times a day I'm having hundreds of log entry related to
exception below, the network bottleneck seems, anyone know how to solve, or
encountered this problem
Using
C* version 1.1.4
and
Java version 1.7.0_21
Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java
On Fri, Jul 12, 2013 at 2:28 AM, Radim Kolar h...@filez.com wrote:
with some very little work (less then 10 KB of code) is possible to have
online sstable splitter and exported this functionality over JMX.
Are you volunteering? If so, I'd totally dig using the patch! :D
=Rob
Thanks, But Michael's answer confuse me more.
I use list cf; in cassandra-cli. It seems lots of rows have been deleted, but
keys exist.
After the deletion, why the key still exists? It seems useless.
RowKey: 3030303031306365633862356437636365303861303433343137656531306435
---
Hi All,
Well I got most everything working I wanted using Cassandra then discovered I
needed to use an Order By. I am using Cassandra 1.2.5.
The use of Order By requires Primary Key which appears to be only supported by
by using CQL and not Cassandra-cli. So I dropped my table created uisng CLI
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