Hi Amila ,
I tried your code. In which we made some modification accordingly like:
public class DataImportExample
{
static String filename;
public static void main(String[] args) throws IOException
{
filename = /root/perl_work/abc.csv;
BufferedReader reader = new
Sharing my experience here.
1) Never had any issues with different size DCs. If the hardware is the
same, keep the # to 256.
2) In most of the cases I keep the 256 vnodes and no performance problems
(when they are triggered, the cause is not the vnodes #)
Regards,
Carlos Juzarte Rolo
Cassandra
Hi,
I used this https://github.com/yukim/cassandra-bulkload-example/ (I have
modified BulkLoad.java for my needs) for the sstable loader and it works
ok. You can take a look, maybe it will help you.
Regards,
Vanessa.
On Mon, Mar 30, 2015 at 10:04 AM, Rahul Bhardwaj
rahul.bhard...@indiamart.com
Hi,
Does anyone know if there is a more complete and up to date documentation about the sstable files
structure (data, index, stats etc.) than this one : http://wiki.apache.org/cassandra/ArchitectureSSTable
I'm looking for a full specification, with schema of the structure if possible.
Hi Rahul,
By just seeing the error I guess the file name you have given need to be
changed to to format file:/// .Not sure anyway.
Cheers!
Amila
On Mon, Mar 30, 2015 at 1:46 PM, Rahul Bhardwaj
rahul.bhard...@indiamart.com wrote:
Hi Venessa,
Thanks for sharing.
But when after
We are getting a OOM when adding a new node to an existing cluster. In the
heapdump we found that this thread caused the OutOfMemory exception:
SharedPool-Worker-10 daemon prio=5 tid=440 RUNNABLE
at java.lang.OutOfMemoryError.init(OutOfMemoryError.java:48)
at
Hi Venessa,
Thanks for sharing.
But when after compiling BulkLoad.java, on executing it is returning
Exception in thread main java.lang.NoClassDefFoundError: BulkLoad (wrong
name: bulkload/BulkLoad)
had you also seen this.
Regards:
Rahul Bhardwaj
On Mon, Mar 30, 2015 at 12:57 PM, Vanessa
+1
On 03/30/2015 11:38 AM, Pierre wrote:
Hi,
Does anyone know if there is a more complete and up to date
documentation about the sstable files structure (data, index, stats
etc.) than this one :
http://wiki.apache.org/cassandra/ArchitectureSSTable
I'm looking for a full specification,
No, it's not a bug. In a composite every elements start by a 2 short
indicating the size of the element, plus an extra byte that is used for
sorting purposes. A little bit more details can be found in the
CompositeType class javadoc if you're interested. It's not the most compact
format there is
I am writing code to bulk load data into Cassandra using
SSTableSimpleUnsortedWriter
I changed my partition key from a composite key (long, int) to a single column
key (long).
For creating the composite key I used a CompositeType, and I kept using it
after changing the key to a single column.
hi everyone..
I'm a m-tech student. my academic project is cassandra. I have run the
source code of cassandra in eclipse juno using ant build.
https://github.com/apache/cassandra. i have to do some feature enhancement
in cassandra. After enhancing i hav to import crime datasets into the
cassandra
Hi,
I have added new nodes to an existing cluster and ran the “nodetool cleanup”. I
am getting the following error. Wanted to know if there is any solution to it.
Regards,
Amlan
Error occurred during cleanup
java.util.concurrent.ExecutionException: java.lang.AssertionError: Memory was
freed
Hi Amlan,
On 30/03/15 22:12, Amlan Roy wrote:
Hi,
I have added new nodes to an existing cluster and ran the “nodetool cleanup”. I
am getting the following error. Wanted to know if there is any solution to it.
Regards,
Amlan
Error occurred during cleanup
Code problem that was patched in
https://issues.apache.org/jira/browse/CASSANDRA-8716
https://issues.apache.org/jira/browse/CASSANDRA-8716. Upgrade to 2.0.13
On Mar 30, 2015, at 1:12 PM, Amlan Roy amlan@cleartrip.com wrote:
Hi,
I have added new nodes to an existing cluster and ran
Create table tomb_test (
guid text,
content text,
range text,
rank int,
id text,
cnt int
primary key (guid, content, range, rank)
)
Sometime I delete the rows using cassandra java driver using this query
DELETE FROM tomb_test WHERE guid=? and content=? and range=?
in Batch
Increase the read CL to quorum and you should get correct results.
How many nodes do you have in the cluster and what is the replication
factor for the keyspace?
On Mon, Mar 30, 2015 at 7:41 PM, Benyi Wang bewang.t...@gmail.com wrote:
Create table tomb_test (
guid text,
content text,
On Fri, Mar 27, 2015 at 4:27 PM, Shiwen Cheng cheng.shiwen...@gmail.com
wrote:
Thanks Robert!
Yes I tried what you said: clean the data and re-bootstrap. But still it
failed, once at the point of 600GB transferred and once at 1.1TB :(
1) figure out what is making your streams die (usually
On Fri, Mar 27, 2015 at 4:01 AM, Jason Wee peich...@gmail.com wrote:
Rob, the cluster now upgraded to cassandra 1.0.12 (default hd version,
in Descriptor.java) and I ensure all sstables in current cluster are
hd version before upgrade to cassandra 1.1. I have also checked in
cassandra 1.1.12
On Mon, Mar 30, 2015 at 2:08 AM, Nathan Bijnens nat...@nathan.gs wrote:
We are getting a OOM when adding a new node to an existing cluster. In the
heapdump we found that this thread caused the OutOfMemory exception:
SharedPool-Worker-10 daemon prio=5 tid=440 RUNNABLE
This type of post is
On Mon, Mar 30, 2015 at 4:21 PM, Amlan Roy amlan@cleartrip.com wrote:
Thanks for the reply. I have upgraded to 2.0.13. Now I get the following
error.
If cleanup is still excepting for you on 2.0.13 with some sstables you
have, I would strongly consider :
1) file a JIRA
Hi,
Thanks for the reply. I have upgraded to 2.0.13. Now I get the following error.
Regards,
Amlan
Exception in thread main java.lang.AssertionError:
[SSTableReader(path='/data/1/cassandra/data/xxx/xxx/xxx.db'),
SSTableReader(path='/data/1/cassandra/data/xxx/xxx/xxx.db')]
at
Thanks for replying.
In cqlsh, if I change to Quorum (Consistency quorum), sometime the select
return the deleted row, sometime not.
I have two virtual data centers: service (3 nodes) and analytics(4 nodes
collocate with Hadoop data nodes).The table has 3 replicas in service and 2
in analytics.
On Fri, Mar 27, 2015 at 7:20 AM, Jonathan Haddad j...@jonhaddad.com wrote:
Running upgrade is a noop if the tables don't need to be upgraded. I
consider the cost of this to be less than the cost of missing an upgrade.
Oh, right! This optimization was added, which means I totally and
Looks like the issue is https://issues.apache.org/jira/browse/CASSANDRA-9070.
On Mon, Mar 30, 2015 at 6:25 PM, Robert Coli rc...@eventbrite.com wrote:
On Mon, Mar 30, 2015 at 4:21 PM, Amlan Roy amlan@cleartrip.com wrote:
Thanks for the reply. I have upgraded to 2.0.13. Now I get the
On Mon, Mar 30, 2015 at 1:38 AM, Pierre pierredev...@gmail.com wrote:
Does anyone know if there is a more complete and up to date documentation
about the sstable files structure (data, index, stats etc.) than this one :
http://wiki.apache.org/cassandra/ArchitectureSSTable
No, there isn't.
why? Then there are 2 places 2 maintain or get jira'ed for a discrepancy.
On Mar 30, 2015 4:46 PM, Robert Coli rc...@eventbrite.com wrote:
On Mon, Mar 30, 2015 at 1:38 AM, Pierre pierredev...@gmail.com wrote:
Does anyone know if there is a more complete and up to date documentation
about the
The tricky thing with documenting the SS tables is that there are a lot
of conditionals in the structure, so it makes for twisty reading. Just
for fun, here's a terrible start I made once:
https://github.com/mustardgrain/cassandra-notes/blob/master/SSTables.md
On Mon, Mar 30, 2015, at 05:12 PM,
On Mon, Mar 30, 2015 at 5:07 PM, daemeon reiydelle daeme...@gmail.com
wrote:
why? Then there are 2 places 2 maintain or get jira'ed for a discrepancy.
If you are asserting that code is capable of documenting itself, we will
just have to agree to disagree.
=Rob
Yes updating code and documentation can sometimes be annoying, you would only
ever maintain both if it were important. It comes down or is having the format
of the data files documented for everyone to understand an important thing?
__
Sent from iPhone
On 31 Mar
Thanks Sylvain.
Is there any way to create a composite key with only one column in Cassandra
when creating a table, or should creating a CompositeType instance with a
single column be prohibited?
From: Sylvain Lebresne [mailto:sylv...@datastax.com]
Sent: Monday, March 30, 2015 1:57 PM
To:
Try this
http://stackoverflow.com/a/17208343/248656
From: jean paul [mailto:researche...@gmail.com]
Sent: Wednesday, March 18, 2015 7:06 PM
To: user@cassandra.apache.org
Subject: Saving a file using cassandra
Hello,
Finally, i have created my ring using cassandra.
Please, i'd like to store a
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