) that you have maxed
out of instead of memory.
---
Chris Lohfink
On Sep 17, 2014, at 8:35 PM, Yatong Zhang bluefl...@gmail.com wrote:
@Chris Lohfink I have 16G memory per node, all the other settings are default
@J. Ryan Earl I am not sure. I am using the default settings.
But I've found out
priority 00
Max realtime timeout unlimitedunlimitedus
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Chris Lohfink
On Sep 17, 2014, at 6:09 PM, Yatong Zhang bluefl...@gmail.com wrote:
My sstable size is 192MB. I removed some data directories to reduce the data
of nodetool cfstats), may be worth including g to break it up
more - but I dont know enough about your data model.
---
Chris Lohfink
On Sep 17, 2014, at 4:53 PM, Mohammed Guller moham...@glassbeam.com wrote:
Thank you all for your responses.
Alex –
Instance (ephemeral) SSD
Ben
How much memory does your system have? How much memory is system utilizing
before starting Cassandra (use command free)? What are the heap setting it
tries to use?
Chris
On Sep 15, 2014, at 8:16 PM, Yatong Zhang bluefl...@gmail.com wrote:
It's during the startup. I tried to upgrade cassandra
-env.sh as well to simplify things a little and make it
parsable by gc log visualization tools
---
Chris Lohfink
On Sep 15, 2014, at 9:40 PM, Donald Smith donald.sm...@audiencescience.com
wrote:
I understand that cassandra uses ParNew GC for New Gen and CMS for Old Gen
(tenured). I’m trying
It can get really unbalanced with STCS. Whats more is even if there was a disk
that could fit the 600gb sstable it doesn't pay attention to space (first) so
may pick the 75% full one over the 10% one. Its a better idea to use LCS with
it unless data model really needs it in which case monitor
/repo1.maven.org/maven2/com.yammer.metrics/metrics-core/2.2.0/com/yammer/metrics/core/Timer.java?av=f
Chris Lohfink
On Aug 28, 2014, at 5:39 PM, Donald Smith donald.sm...@audiencescience.com
wrote:
The metrics OneMinuteRate, FIveMinuteRate, FifteenMinuteRate, and MeanRate
are NOT lifetime
There is a Bring your own Hadoop for DSE as well:
http://www.datastax.com/documentation/datastax_enterprise/4.5/datastax_enterprise/byoh/byohIntro.html
Can also run hadoop against your backup/snapshots:
https://github.com/Netflix/aegisthus
https://github.com/fullcontact/hadoop-sstable
Chris
On
at real
time. This is used to determine how much memory a memtable is taking up and
how often to flush it.
---
Chris Lohfink
On Aug 26, 2014, at 12:20 PM, Leleu Eric eric.le...@worldline.com wrote:
Hi,
I’m trying to understand what is the liveRatio and if I have to care about it.
I
Few options I can think of, probably some better ideas out there. These mostly
depending on size of data and how frequently updated.
1) a map reduce or spark job to filter out non-empty rows
2) add some logging and do a custom build of cassandra (ie in removeDeletedCF
of ColumnFamilyStore) and
Its stored as bytes, depending completely on what is given to it. If I were to
guess I would say this looks like a composite partition key of utf8 values
separated with control character (0) and a length of the next key.
i.e.
PRIMARY KEY ((uid, vendor, x), timestamp, y)
Chris Lohfink
On Jul
) and accesses storage more
directly, which is similar to hbases. You have your column family foo, then
just use a composite column to store family, qualifier, and version in column
name with value of column being value. row key is your row key.
---
Chris Lohfink
On Jul 17, 2014, at 6:32 PM, Clint
many times in middle of night.
concurrent compactors will likely be to low (depending on number of cores).
---
Chris Lohfink
On Jul 14, 2014, at 7:31 PM, Greg Bone gbon...@gmail.com wrote:
I'm looking into creation of monitoring thresholds for cassandra to report on
its health. Does it make
The MemtablePostFlusher is also used for flushing non-cf backed (solr) indexes.
Are you using DSE and solr by chance?
Chris
On Jul 15, 2014, at 5:01 PM, horschi hors...@gmail.com wrote:
I have seen this behavour when Commitlog files got deleted (or permissions
were set to read only).
WITH replication = {
'class': 'NetworkTopologyStrategy',
'datacenter1': '3'
};
On Fri, Jul 11, 2014 at 3:48 PM, Chris Lohfink clohf...@blackbirdit.com
wrote:
What replication strategy are you using? if using NetworkTopolgyStrategy
double check that your DC names match up (case
mean by
check that your DC names match up
CREATE KEYSPACE prod WITH replication = {
'class': 'NetworkTopologyStrategy',
'datacenter1': '3'
};
On Fri, Jul 11, 2014 at 3:48 PM, Chris Lohfink clohf...@blackbirdit.com
wrote:
What replication strategy are you using? if using
What replication strategy are you using? if using NetworkTopolgyStrategy double
check that your DC names match up (case sensitive)
Chris
On Jul 11, 2014, at 9:38 AM, Ruchir Jha ruchir@gmail.com wrote:
Here's the complete stack trace:
Hector is same way, if any node is slow to responds, times out or dies hector
will remove it from the pool leaving making it look like cluster dead. The
entire fault tolerant part of cassandra would be lost.
Chris
On Jun 27, 2014, at 11:00 AM, Michael Dykman mdyk...@gmail.com wrote:
NO,
Bean: org.apache.cassandra.db.CompactionManager
also nodetool compactionstats gives you how many are in the queue + estimate of
how many will be needed.
in 1.1 you will OOM far before you hit the limit,. In theory though, the
compaction executor is a little special cased and will actually
://dimacs.rutgers.edu/~graham/pubs/papers/fwddecay.pdf
---
Chris Lohfink
On May 7, 2014, at 1:00 PM, Chris Burroughs chris.burrou...@gmail.com wrote:
They are exponential decaying moving averages (like Unix load averages) of
the number of events per unit of time.
http://wiki.apache.org/cassandra
Shameless plug:
http://www.evidencebasedit.com/guide-to-cassandra-thread-pools/#droppable
On May 15, 2014, at 7:37 PM, Mark Reddy mark.re...@boxever.com wrote:
Yes, please see http://wiki.apache.org/cassandra/FAQ#dropped_messages for
further details.
Mark
On Fri, May 9, 2014 at
It will delete them after gc_grace_seconds (set per table) and a compaction.
---
Chris Lohfink
On May 16, 2014, at 9:11 AM, Dimetrio dimet...@flysoft.ru wrote:
Does cassandra delete tombstones during simple LCS compaction or I should use
node tool repair?
Thanks.
--
View
There does seem to be some effort trying to encourage others - DataStax had
some talks explaining how to contribute. This year there is even a extra
bootcamp
http://learn.datastax.com/CassandraSummitBootcampApplication.html
On May 16, 2014, at 9:47 AM, Peter Lin wool...@gmail.com wrote:
slow.
if it shows large pending/blocked in nodetool tpstats might be overrunning
your capacity.
---
Chris Lohfink
On May 12, 2014, at 5:03 PM, Batranut Bogdan batra...@yahoo.com wrote:
Hello all,
I have a counter CF defined as pk text PRIMARY KEY, a counter, b counter, c
counter, d
for the columns you added then C* will clean up sstables (if
size tiered and post 1.2) once the datas been expired. Since you never delete
set the gc_grace_seconds to 0 so the ttl expiration doesnt result in tombstones.
---
Chris Lohfink
On May 6, 2014, at 7:55 PM, Kevin Burton bur
That is not expected. What client are you using and how are you setting the
ttls? What version of Cassandra?
---
Chris Lohfink
On May 8, 2014, at 9:44 AM, Sebastian Schmidt isib...@gmail.com wrote:
Hi,
I'm using the TTL feature for my application. In my tests, when using a
TTL of 5
Try running with -version:class added to your jvm options on your client.
Can you give the output for the jar files for thrift/cassandra? (i.e.
cassandra, cassandra-thrift, and thrift lib)
---
Chris Lohfink
On Apr 25, 2014, at 11:30 PM, Vivek Mishra mishra.v...@gmail.com wrote
Yes.
Some changes you can manually have take affect without a restart (ie
compactionthroughput, things settable from jmx). There is also config changes
you cant really make like switching the snitch and such without a big todo.
---
Chris
On Apr 25, 2014, at 8:53 AM, Phil Burress
Did you send an enormous write or batch write and it wrapped? Or is your
client trying to use non-framed transport?
Chris
On Apr 25, 2014, at 2:50 PM, Vivek Mishra mishra.v...@gmail.com wrote:
This is what i am getting with Cassandra 2.0.7 with Thrift.
Caused by:
what client are you using?
On Apr 25, 2014, at 3:01 PM, Vivek Mishra mishra.v...@gmail.com wrote:
It's a simple cql3 query to create keyspace.
-Vivek
On Sat, Apr 26, 2014 at 1:28 AM, Chris Lohfink clohf...@blackbirdit.com
wrote:
Did you send an enormous write or batch write
name in
/etc/cassandra/cassandra-env.sh) and a random port. Likely the 2nd connection
is whats timing out. JMX makes firewalls and sysadmins very frustrated :)
---
Chris Lohfink
On Apr 24, 2014, at 7:05 AM, Jacob Rhoden jacob.rho...@me.com wrote:
I’ve done an install on an amazon instance
Wow… wheres this been all my life. I don’t see why this can’t be set by
default? https://issues.apache.org/jira/browse/CASSANDRA-7087
---
Chris Lohfink
On Apr 24, 2014, at 11:48 AM, Steven A Robenalt srobe...@stanford.edu wrote:
There's a little-known change in the way JMX uses ports
inserted so might have to do some
client side filtering to show the latest only using the created field.
---
Chris Lohfink
On Apr 22, 2014, at 1:51 AM, Jimmy Lin y2klyf+w...@gmail.com wrote:
hi,
look at the collection type support in cql3,
e.g
http://www.datastax.com/documentation/cql/3.0/cql
in mind if serializing data though you will have to always maintain code
that will be able to read old versions, it can become very complex and lead to
weird bugs.
---
Chris Lohfink
On Apr 21, 2014, at 3:53 AM, Jagan Ranganathan ja...@zohocorp.com wrote:
Dear All,
We have a requirement to store
The java client will automatically page the row for you. If your columns are
large may want to tweak the .setFetchSize(##) on your Statement.
---
Chris Lohfink
On Apr 17, 2014, at 12:36 PM, abhinav chowdary abhinav.chowd...@gmail.com
wrote:
We have one use case where we need to pull
You can take a heap dump and find out who has references to it. Can find out
more which column family they are from. Do you have a lot of tombstones or
have data thats over written a lot or and doing a ton of reads? Maybe wide rows
that your querying across or using filtering? Reads could
recommend against it.
---
Chris Lohfink
On Apr 16, 2014, at 10:13 AM, Sávio Teles savio.te...@lupa.inf.ufg.br wrote:
Is it advisable to run the embedded Cassandra in production?
2014-04-16 12:08 GMT-03:00 Sávio Teles savio.te...@lupa.inf.ufg.br:
I'm running a cluster with Cassandra and my app
id = 1
--
*Chris Lohfink*
Engineer
415.663.6738 | Skype: clohfink.blackbirdit
*Blackbird **[image: favicon]*
775.345.3485 | www.blackbirdIT.com http://www.blackbirdit.com/
*Formerly PalominoDB/DriveDev*
On Fri, Apr 11, 2014 at 3:04 AM, Phil Luckhurst
phil.luckhu...@powerassure.com wrote
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