I traced this to the misnomer of Integer datatype in Cassandra.
IntegerType in Cassandra is infact a variable length BigInt. Changing
it to Int32Type solved the issue.
https://github.com/Netflix/astyanax/issues/59
On Mon, Sep 17, 2012 at 10:51 AM, A J wrote:
> Hello,
>
> I am
Hello,
I am tyring to retrieve a list of Column Names (that are defined as
Integer) from a CF with RowKey as Integer as well. (I don't care for
the column values that are just nulls)
Following is snippet of my Astyanax code. I am getting 0 columns but I
know the key that I am querying contains a
Hi,
I am new to java and trying to get the Astyanax client running for Cassandra.
Downloaded astyanax from https://github.com/Netflix/astyanax. How do I
compile the source code from here it in a very simple fashion from
linux command line ?
Thanks.
For static column family what is the advantage in pre-defining column metadata ?
I can see ease of understanding type of values that the CF contains
and that clients will reject incompatible insertion.
But are there any major advantages in terms of performance or
something else that makes it bene
istening on that port?
>
> So database node did not start and bind to that port and you would see
> exception in the logs of that database nodeŠ.just a guess.
>
> Dean
>
> On 8/20/12 4:10 PM, "A J" wrote:
>
>>I am running 1.1.3
>>Nodetool on the database no
I am running 1.1.3
Nodetool on the database node (just a single node db) is giving the error:
Failed to connect to 'localhost:7199': Connection refused
Any idea what could be causing this ?
Thanks.
Hi
If I have a WHERE clause in CQL with several 'AND' and each column is
indexed, which index(es) is(are) used ?
Just the first field in the where clause or all the indexes involved
in the clause ?
Also is index used only with an equality operator or also with greater
than /less than comparator as
Is it possible to use a custom Partitioner type (other than RP or BOP) ?
Say if my rowkeys are all Integers and I want all even keys to go to
node1 and odd keys to node2, is it feasible ? How would I go about ?
Thanks.
Are row key hashed before being physically stored in Cassandra ? If
so, what hash function is used to ensure collision is minimal.
Thanks.
Never mind.
Double quotes within the single quotes worked:
select * from solr where solr_query='body:"sixty eight million nine
hundred forty three thousand four hundred twenty four"';
On Thu, Apr 12, 2012 at 11:42 AM, A J wrote:
> What is the syntax for a string matc
Yes, that is good enough for now. Thanks.
On Fri, Mar 16, 2012 at 6:49 PM, Watanabe Maki wrote:
> How about to fill zeros before smaller digits?
> Ex. 0001, 0002, etc
>
> maki
>
>
> On 2012/03/17, at 6:29, A J wrote:
>
>> If I define my rowkeys to be In
map tool and examine heap histogram
> first, heap dump second.
>
> Best regards, Vitalii Tymchyshyn
>
> 20.03.12 18:12, A J написав(ла):
>
>> I have both row cache and column cache disabled for all my CFs.
>>
>> cfstats says "Bloom Filter Space Used: 1760" per
t AFAIR is 10 keys per column family.
>
> 20.03.12 16:05, A J написав(ла):
>
>> ok, the last thread says that 1.0+ onwards, thousands of CFs should
>> not be a problem.
>>
>> But I am finding that all the allocated heap memory is getting consumed.
>> I sta
esults
>
> If you still got questions after reading this thread or some others about
> the same topic, do not hesitate asking again,
>
> Alain
>
>
> 2012/3/19 A J
>>
>> How many Column Families are one too many for Cassandra ?
>> I created a db with 50
How many Column Families are one too many for Cassandra ?
I created a db with 5000 CFs (I can go into the reasons later) but the
latency seems to be very erratic now. Not sure if it is because of the
number of CFs.
Thanks.
If I define my rowkeys to be Integer
(key_validation_class=IntegerType) , how can I order the rows
numerically ?
ByteOrderedPartitioner orders lexically and retrieval using get_range
does not seem to make sense in order.
If I were to change rowkey to be UTF8 (key_validation_class=UTF8Type),
BOP st
re why I had forgotten that.
>
> The pycassa docs are slightly wrong there, though. It's technically atomic
> for the same key across multiple column families. I'll get that fixed.
>
> On Wed, Mar 14, 2012 at 5:22 PM, A J wrote:
>>
>> > No, batch_mutate
d, Mar 14, 2012 at 4:15 PM, Tyler Hobbs wrote:
> On Wed, Mar 14, 2012 at 11:50 AM, A J wrote:
>>
>>
>> Are you saying the way 'batch mutate' is coded, the order of writes in
>> the batch does not mean anything ? You can ask the batch to do A,B,C
>> and th
?
Thanks.
On Wed, Mar 14, 2012 at 3:37 AM, aaron morton wrote:
> It may, but it would not be guaranteed.
>
> Cheers
>
> -
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 14/03/2012, at 8:11 AM, A J wrote:
I know batch operations are not atomic but does the success of a write
imply all writes preceeding it in the batch were successful ?
For example, using cql:
BEGIN BATCH USING CONSISTENCY QUORUM AND TTL 864
INSERT INTO users (KEY, password, name) VALUES ('user2',
'ch@ngem3b', 'second user')
>From my tests, I am seeing that a CF that has less than 100 columns
but millions of rows has a much lower latency to read a column in a
row than a CF that has only a few thousands of rows but wide rows with
each having 20K columns.
Example:
cf1 has 6 Million rows and each row has about 100 column
Hello,
In a CF I have with valueless columns and column-name type being
integer, I am seeing latency in the order of 80-90ms to retrieve a
single column from a row containing 50K columns. It is just a single
node db on a single box.
Another row with 20K columns in the same CF, still has the latency
What is the best way to create millions of test data in Cassandra ?
I would like to have some script where I first insert say 100 rows in
a CF. Then reinsert the same data on 'server side' with new unique
key. That will make it 200 rows. Then continue the exercise a few
times till I get lot of rec
Hello,
What is the best way to log write operations (insert,remove, counter
add, batch operations) in Cassandra. I need to store the operations
(with values being passed) in some fashion or the other for audit
purposes (and possibly to undo some operation after inspection).
Thanks.
Hello, when you set 'commitlog_sync: batch' on all the nodes in a
multi-DC cluster and call writes with CL=ALL, does the operation wait
till the write is flushed to all the disks on all the nodes ?
Thanks.
t;
> Cheers
>
> -
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 25/01/2012, at 10:10 AM, A J wrote:
>
> Is there a command in cqlsh or cassandra CLI that can display the
> various values of the configuration parameters at
Is there a command in cqlsh or cassandra CLI that can display the
various values of the configuration parameters at use.
I am particularly interested in finding the value of ' commitlog_sync'
that the current session is using ?
Thanks.
AJ
Hello,
I am trying to use internode encryption in Cassandra (1.0.6) for the first time.
1. Followed the steps 1 to 5 at
http://download.oracle.com/javase/6/docs/technotes/guides/security/jsse/JSSERefGuide.html#CreateKeystore
Q. In cassandra.yaml , what value goes for keystore ? I exported the
cert
If I change endpoint_snitch from SimpleSnitch to PropertyFileSnitch,
does it require restart of cassandra on that node ?
Thanks.
Thanks, that worked.
On Tue, Dec 20, 2011 at 4:08 PM, Dave Brosius wrote:
>
> KsDef ksDef = new KsDef();
> Map options = new HashMap();
> options.put("replication_factor", "2");
> ksDef.setStrategy_options(options);
>
>
>
> *- Original Message
like
>
> public static ByteBuffer toByteBuffer(String value) throws
> UnsupportedEncodingException{return
> ByteBuffer.wrap(value.getBytes("UTF-8"));}
>
>
>
> see http://wiki.apache.org/cassandra/ThriftExamples
>
>
> *- Original
> and the value is the option value.
>
> Cheers
>
> -
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 20/12/2011, at 12:02 PM, A J wrote:
>
> What is the syntax of setStrategy_options in thrift.
>
&
The following syntax :
import org.apache.cassandra.thrift.*;
.
.
ColumnOrSuperColumn col = client.get("count_key".getBytes("UTF-8"),
cp, ConsistencyLevel.QUORUM);
is giving the error:
get(java.nio.ByteBuffer,org.apache.cassandra.thrift.ColumnPath,org.apache.cassandra.thrift.ConsistencyLev
What is the syntax of setStrategy_options in thrift.
The following fails:
Util.java:22:
setStrategy_options(java.util.Map)
in org.apache.cassandra.thrift.KsDef cannot be applied to
(java.lang.String)
newKs.setStrategy_options("{replication_factor:2}");
What is the syntax for each_quorum in pycassa ?
Thanks.
If I update a keyspace to increase the replication factor; what
happens to existing data for that keyspace ? Does the existing data
get automatically increase its replication ? Or only on a RR or node
repair does the existing data increase its replication factor ?
Thanks.
Hello,
Is 'garbage collecting tombstones ' a different operation than the JVM GC.
Garbage collecting tombstones is controlled by gc_grace_seconds which
by default is set to 10 days. But the traditional GC seems to happen
much more frequently (when observed through jconsole) ?
How can I force the g
The issue with that is that I wish to have EACH_QUORUM in our other 2
datacenters but not in the third DC.
Could not figure a way to accomplish that so exploring have a
near-realtime backup copy in the third DC via some streaming process.
On Tue, Nov 15, 2011 at 12:12 PM, Robert Jackson
wrote:
>
Hello
VoltDB has an export feature to stream the data out of the database.
http://voltdb.com/company/blog/voltdb-export-connecting-voltdb-other-systems
This is different from Cassandra's export feature
(http://wiki.apache.org/cassandra/Operations#Import_.2BAC8_export)
which is more of a different
To clarify, I wish to keep N=4 and W=2 in the following scenario.
Thanks.
On Sun, Nov 13, 2011 at 11:20 PM, A J wrote:
> Hello
> Say I have 4 nodes: A, B, C and D and wish to have consistency level
> for writes defined in such as way that writes meet the following
> consistency leve
Hello
Say I have 4 nodes: A, B, C and D and wish to have consistency level
for writes defined in such as way that writes meet the following
consistency level:
(A or B) AND C AND !D,
i.e. either of A or B will suffice and C to be included into
consistency level as well. But the write should not wait
Hi,
For a single node of cassandra(1.0 version) having 15G of data+index,
48GB RAM, 8GB heap and about 2.6G memtable threshold, I am getting OOM
when I have 1000 concurrent inserts happening at the same time.
I have kept concurrent_writes: 128 in cassandra.yaml as there are a
total of 16 cores (su
Just confirming. Thanks for the clarification.
On Tue, Jul 12, 2011 at 10:53 AM, Peter Schuller
wrote:
>> From "Cassandra the definitive guide" - Basic Maintenance - Repair
>> "Running nodetool repair causes Cassandra to execute a major compaction.
>> During a major compaction (see “Compactio
Merkle trees with neighboring
nodes."
So is this text from the book misleading ?
On Fri, Jul 8, 2011 at 10:36 AM, Jonathan Ellis wrote:
> that's an internal term meaning "background i/o," not sstable merging per se.
>
> On Fri, Jul 8, 2011 at 9:24 AM, A J wrote:
>
Hello,
Have the following questions related to nodetool repair:
1. I know that Nodetool Repair Interval has to be less than
GCGraceSeconds. How do I come up with an exact value of GCGraceSeconds
and 'Nodetool Repair Interval'. What factors would want me to change
the default of 10 days of GCGraceSe
Never mind. I see the issue with this. I will be able to catch the
writes as failed only if I set CL=ALL. For other CLs, I may not know
that it failed on some node.
On Mon, Jul 11, 2011 at 2:33 PM, A J wrote:
> Instead of doing nodetool repair, is it not a cheaper operation to
> keep
Instead of doing nodetool repair, is it not a cheaper operation to
keep tab of failed writes (be it deletes or inserts or updates) and
read these failed writes at a set frequency in some batch job ? By
reading them, RR would get triggered and they would get to a
consistent state.
Because these wou
compact. Those are different processes already.
>
> maki
>
>
> On 2011/07/01, at 7:21, A J wrote:
>
>> Thanks all !
>> In other words, I think it is safe to say that a node as a whole can
>> be made consistent only on 'nodetool repair'.
>>
>> Ha
Does a 'select * from ' with no filter still use the primary
index on the key or do a 'full table scan' ?
Thanks.
Does a write lock:
1. Just the columns in question for the specific row in question ?
2. The full row in question ?
3. The full CF ?
I doubt read does any locks.
Thanks.
Is there a way to find what all nodes was a write applied to ? It
could be a successful write (i.e. w was met) or unsuccessful write
(i.e. less than w nodes were met). In either case, I am interested in
finding:
Number of nodes written to (before timeout or on success)
Name of nodes written to (bef
https://www.packtpub.com/cassandra-apache-high-performance-cookbook/book
why ?
On Wed, Jul 6, 2011 at 11:18 AM, Richard Low wrote:
> On Wed, Jul 6, 2011 at 3:06 PM, A J wrote:
>> I wish to use the order preserving byte-ordered partitioner. How do I
>> figure the initial token values based on the text key value.
>> Say I wish to put all keys start
I wish to use the order preserving byte-ordered partitioner. How do I
figure the initial token values based on the text key value.
Say I wish to put all keys starting from a to d on N1. e to m on N2
and n to z on N3. What would be the initial_token values on each of
the 3 nodes to accomplish this ?
Hello,
Where can I find details of nodetool move. Most places just mention
that 'move the target node to a given Token. Moving is essentially a
convenience over decommission + bootstrap.'
Stuff like, when do I need to do and on what nodes? What is the value
of 'new token' to be provided ? What hap
Perfect ! Thanks.
On Tue, Jul 5, 2011 at 1:51 PM, Eric tamme wrote:
> AJ,
>
> You can use offset mirror tokens to achieve this. Pick your initial
> tokens for DC1N1 and DC1N2 as if they were the only nodes in your
> cluster. Now increment each by 1 and use them as the tokens for DC2N1
> and DC
Hello,
Let me explain what I am trying to do:
I am prototyping 2 Data centers (DC1 and DC2) with two nodes each. Say
DC1_n1 and DC1_n2 nodes in DC1 and DC2_n1 and DC2_n2 in DC2.
With PropertyFileSnitch and NetworkTopologyStrategy and
'strategy_options of DC1=1 and DC2=1', I am able to ensure that e
Thanks. That worked.
On Tue, Jul 5, 2011 at 11:35 AM, Jonathan Ellis wrote:
> replace the s_o line with
>
> and strategy_options:DC1=1 and strategy_options:DC2=2
>
> On Tue, Jul 5, 2011 at 10:09 AM, A J wrote:
>> cqlsh> CREATE KEYSPACE twissandra with
&
cqlsh> CREATE KEYSPACE twissandra with
... strategy_class =
... 'org.apache.cassandra.locator.NetworkTopologyStrategy'
... and strategy_options=[{DC1:1, DC2:1}];
Bad Request: line 4:37 no viable alternative at character ']'
What is wrong with the above syntax ?
Thanks.
Thanks all !
In other words, I think it is safe to say that a node as a whole can
be made consistent only on 'nodetool repair'.
Has there been enough interest in providing anti-entropy without
compaction as a separate operation (nodetool repair does both) ?
On Thu, Jun 30, 2011 at 5:27 PM, Jonat
I am little confused of the reason why nodetool repair has to run
within GCGraceSeconds.
The documentation at:
http://wiki.apache.org/cassandra/Operations#Frequency_of_nodetool_repair
is not very clear to me.
How can a delete be 'unforgotten' if I don't run nodetool repair? (I
understand that if
Cassandra uses accrual failure detector to interpret the gossips.
Is it somehow possible to extract these (gossip values and results of
the failure detector) in an external system ?
Thanks
>From what I read, Cassandra allows a single column value to be up-to
2GB but would chunk the data if greater than 64MB.
Is the chunking transparent to the application or does the app need to
know if/how/when the chunking happened for a specific column value
that happened to be > 64MB.
Thank you.
Are there any options to encrypt the column families when they are
stored in the database. Say in a given keyspace some CF has sensitive
info and I don't want a 'select *' of that CF to layout the data in
plain text.
Thanks.
ces
> here http://ria101.wordpress.com/2011/02/08/cassandra-the-importance-of-system-clocks-avoiding-oom-and-how-to-escape-oom-meltdown/
> Hope this helps
> Dominic
> On 27 June 2011 23:03, A J wrote:
>>
>> During writes, the timestamp field in the column is the system-time of
>
During writes, the timestamp field in the column is the system-time of
that node (correct me if that is not the case and the system-time of
the co-ordinator is what gets applied to all the replicas).
During reads, the latest write wins.
What if there is a clock skew ? It could lead to a stale writ
Is there an enhancement on the roadmap to stagger the auto compactions
on different nodes, to avoid more than one node compacting at any
given time (or as few nodes as possible to compact at any given time).
If not, any workarounds ?
Thanks.
stion about maximising cache hits
> see https://github.com/apache/cassandra/blob/cassandra-0.8.0/conf/cassandra.yaml#L308
> Cheers
>
> -
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
> On 16 Jun 2011, at 05:58, A
Is there a way to favor a node to always participate (or never
participate) towards fulfillment of read consistency as well as write
consistency ?
Thanks
AJ
Snapshot runs on a local node. How do I ensure I have a 'point in
time' snapshot of the full cluster ? Do I have to stop the writes on
the full cluster and then snapshot all the nodes individually ?
Thanks.
Is it possible in some way to specify what specific nodes I want to
include (or exclude) from the Consistency Level fulfillment ?
Example, I have a cluster of 4 nodes (n1,n2,n3 and n4) and set N=4. I
want to set W=3 and want to ensure that it is n1,n2 and n3 only that
are used to satisfy w=3 (i.e.
dynamic_snitch seems to do host score calculation to figure the
latency of each node.
What are the details of this calculation :
1. What is the mechanism to determine latency ?
2. Does it score the calculated scores and use the historical figures
to come up with the latest scores ? (You can't just
/simulate-delayed-and-dropped-packets-on-linux
>
> That SO page has a pretty good description of how you can do it on the
> network level without having to modify any source(assuming you are on
> linux).
>
> Scott
>
> On Wed, Apr 6, 2011 at 11:20 AM, A J wrote:
>> I wa
I have done some more research. My question now is:
1. From my tests I see that it matters a lot whether the co-ordinator
node is local (geographically) to the client or not.
I will have a cassandra cluster where nodes will be distributed across
the globe. Say 3 in US east_cost, 3 in US west_coast
I want to run some tests where I incorporate random latency in some of
the nodes (that varies over time). I think the best place is to place
a 'sleep (random(10 to 50 seconds)) function' somewhere in the source
code of cassandra.
Or maybe the sleep is not random but the seconds to sleep are read
fr
Can someone comment on this ? Or is the question too vague ?
Thanks.
On Wed, Mar 30, 2011 at 3:58 PM, A J wrote:
> Does the following load balancing scenario look reasonable with cassandra ?
> I will not be having any app servers.
>
> http://dl.dropbox.com/u/7258508/2011-03
In the pycassa.pool.ConnectionPool class, I can specify all the nodes
in server_list parameter.
But overtime, when nodes get decomissioned and new nodes with new IPs
get added, how can the server_list parameter be refereshed ?
Do I have to modify it manually, or is there a way to update the list
au
I did an apple to apple comparison of WRITE speed of Mongo vs Cassandra.
Benchmarking (Cluster of 4 machines. Each of 4 cores and 15gb ram. 2
IN region1 but different zones, 1 in region2 and 1 in region3. Set
consistency level of 3. i.e. atleast 3 machines have to confirm of
write before the write
Does the following load balancing scenario look reasonable with cassandra ?
I will not be having any app servers.
http://dl.dropbox.com/u/7258508/2011-03-30_1542.png
Thanks.
Example, taobao.com is a chinese online bid site. All data is chinese
and they use Mongodb successfully.
Are there similar installations of cassandra where data is non-latin ?
I know in theory, it should all work as cassandra has full utf-8
support. But unless there are real implementations, you c
Can someone list some of the current international language
implementations of cassandra ?
Thanks.
> sent from my android...please pardon occasional typos as I respond @ the
> speed of thought
> /
>
> On Mar 23, 2011 2:54 PM, "A J" wrote:
>
> 7000 and 9160 are accessible. Don't think I need other ports for basic
> setup , r
ues too. the SSL work that has been
> done would also have to be changed ...
>
> -sd
>
> On Tue, Mar 22, 2011 at 6:58 PM, A J wrote:
>> Milind,
>> Among the limitation you...
>
> --
> Sasha Dolgy
> sasha.do...@gmail.com
>
t 12:40 PM, Robert Coli wrote:
> On Tue, Mar 22, 2011 at 8:53 AM, A J wrote:
>> 0.7.4
>>
>> On Tue, Mar 22, 2011 at 11:49 AM, Robert Coli wrote:
>>> On Mon, Mar 21, 2011 at 8:33 PM, A J wrote:
>>>> I am trying to estimate the time it will take to rebuild
patches later today if I can and I'd like to help out
>>>>> with getting it working out of the box.
>>>>>
>>>>> Thanks for the investigative work and documentation Milind!
>>>>>
>>>>> Jeremy
>>>>>
>>>&g
0.7.4
On Tue, Mar 22, 2011 at 11:49 AM, Robert Coli wrote:
> On Mon, Mar 21, 2011 at 8:33 PM, A J wrote:
>> I am trying to estimate the time it will take to rebuild a node. After
>> loading reasonable data,
>> ...
>> For some reason, the repair command runs forever
I am trying to estimate the time it will take to rebuild a node. After
loading reasonable data, I brought down a node and manually removed
all its datafiles for a given keyspace (Keyspace1)
I then restarted the node and got i back in the ring. At this point, I
wish to run nodetool repair (bin/nodet
Not completely related. just fyi.
I like it better to see the start time, end time, duration of each
execution in each thread. And then do the aggregation (avg,max,min)
myself.
I modified last few lines of the Inserter function as follows:
endtime = time.time()
self.latencies[self.idx
dra.apache.org/msg01832.html
>> Aaron
>> On 19 Mar 2011, at 06:46, A J wrote:
>>
>> Just to add, all the telnet (port 7000) and cassandra-cli (port 9160)
>> connections are done using the public DNS (that goes like
>> ec2-.compute.amazonaws.com)
>>
Just to add, all the telnet (port 7000) and cassandra-cli (port 9160)
connections are done using the public DNS (that goes like
ec2-.compute.amazonaws.com)
On Fri, Mar 18, 2011 at 1:37 PM, A J wrote:
> I am able to telnet from one region to another on 7000 port without
> issues. (I g
pen those ports for communication (via your
> Security Group)
> Dave Viner
>
> On Fri, Mar 18, 2011 at 10:20 AM, A J wrote:
>>
>> Thats exactly what I am doing.
>>
>> I was able to do the first two scenarios without any issues (i.e. 2
>> nodes in same availa
> region-to-region communication, rather than intra-zone connectivity or
> cassandra cluster configuration.
> Dave Viner
>
> On Fri, Mar 18, 2011 at 8:34 AM, A J wrote:
>>
>> Hello,
>>
>> I am trying to setup a cassandra cluster across regions.
>> For tes
Hello,
I am trying to setup a cassandra cluster across regions.
For testing I am keeping it simple and just having one node in US-EAST
(say ec2-1-2-3-4.compute-1.amazonaws.com) and one node in US-WEST (say
ec2-2-2-3-4.us-west-1.compute.amazonaws.com).
Using Cassandra 0.7.4
The one in east region
I don't see binary_memtable_throughput_in_mb parameter in
cassandra.yaml anymore.
What is it replaced by ?
thanks.
On Tue, Mar 15, 2011 at 11:32 PM, Eric Evans wrote:
> On Tue, 2011-03-15 at 22:19 -0500, Eric Evans wrote:
>> On Tue, 2011-03-15 at 14:26 -0700, Mark wrote:
>> > Still not seeing 0.
43 Processing response on a callback from 786@/10.253.203.224
DEBUG 22:29:12,443 Processing response on a callback from 791@/10.253.203.224
On Tue, Mar 8, 2011 at 3:22 PM, aaron morton wrote:
> Is this a client side time out or a server side one? What does the error
> stack look
Trying out stress.py on AWS EC2 environment (4 Large instances. Each
of 2-cores and 7.5GB RAM. All in the same region/zone.)
python stress.py -o insert -d
10.253.203.224,10.220.203.48,10.220.17.84,10.124.89.81 -l 2 -e ALL -t
10 -n 500 -S 100 -k
(I want to try with column size of about 1MB. I
ed to specify per-DC replicas w/ NTS in strategy_options,
> instead of using replication_factor
>
> On Thu, Mar 3, 2011 at 1:52 PM, A J wrote:
>> using latest cassandra (0.7.2). I want to try out Network Topology Strategy.
>>
>> Following is related sett
why would you keep metadata in cassandra ? Even for millions of
documents, metadata would be very small, mysql/postgres should
suffice.
Luster ofcourse is well known and widely used along with glusterfs.
Luster I think requires kernel modifications and will be much more
complex. Also it is easier
using latest cassandra (0.7.2). I want to try out Network Topology Strategy.
Following is related setting in cassandra.yaml
endpoint_snitch: org.apache.cassandra.locator.PropertyFileSnitch
I have four nodes. Set them accordingly in ./conf/cassandra-topology.properties:
10.252.219.224=DC2:RAC1
10.
, 2011 at 1:28 PM, Jonathan Ellis wrote:
> Did you try "ls conf/" ?
>
> On Thu, Mar 3, 2011 at 11:27 AM, A J wrote:
>> In PropertyFileSnitch is cassandra-rack.properties or
>> cassandra-topology.properties file used ?
>>
>> Little confused by the stmt:
>&
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