after 3 days it's still
not done migrating to the new nodes).
Could this actually be the case?
Regards,
Chris
B.T.W.: M/R and indices might mix well if we can just fetch the size of the
index, and then we could create the splits telling them to "fetch from index
starting from col n an
I'm using tag cassandra-0.7.0-beta3. I wouldn't know why I need range scans
since I perform a multi_get on the indexed keys.
Regards,
Chris
On Sun, Nov 14, 2010 at 9:51 AM, Jonathan Ellis wrote:
> Are you using a version with working range scans?
>
> On Sat, Nov 13, 2010 at
Hi all,
I'm having some doubts about the current state of my cluster. I started with
one node, filled it with some 10 million rows, then flushed and compacted
the node. Then I ran a small pig script that read an index and fetched the
matching rows, no problem until this point. Now I add a new node
Hi all,
I'm trying to figure out some minor understanding problems. As I see it for
each Keyspace each node takes care about a certain tokenRange (describe_ring
gives me the assignment), these TokenRanges have a list of nodes that hold
replicas, a start token and an end token. The tokens are of ty
Hi all,
ever since I updated my development cluster I'm unable to use
describe_splits to get information about the cluster to do a bulk load into
hadoop. All I get is the following error:
ERROR 15:44:24,498 Error occurred during processing of message.
> java.lang.NullPointerException
> at
>
Hi all,
I'm trying to find the most efficient way to find a node in the cluster
(from the client side) that may hold a copy of rows I'm querying for. The
scenario is quite simple: I have a hadoop job which reads an index and then
has several thousands of keys, now I want to find a way to efficient
Ever since I started implementing my second level caches I've been wondering
on how to deal with this, and thus far I've not found a good solution.
I have a CF acting as a secondary index, and I want to make range queries
against it. Since my keys are Long I simply went ahead and wrote them as
the
On Thu, Oct 7, 2010 at 6:25 PM, Jonathan Ellis wrote:
> On Thu, Oct 7, 2010 at 10:13 AM, Christian Decker
> wrote:
> > So basically my indices should work? Is there a simple way to check that,
> so
> > that we can exclude that?
> >
> > Are LTE working (or on
right?
>
> That's not yet supported, but should be soon.
>
> - Tyler
>
>
> On Thu, Oct 7, 2010 at 10:13 AM, Christian Decker <
> decker.christ...@gmail.com> wrote:
>
>> So basically my indices should work? Is there a simple way to check that,
>> so
gt; right now is EQ, not LTE (or the others).
>>
>>
>> On Thu, Oct 7, 2010 at 6:13 AM, Christian Decker <
>> decker.christ...@gmail.com> wrote:
>>
>>> I'm currently trying to get started on secondary indices in Cassandra
>>> 0.7.0svn, but
I'm currently trying to get started on secondary indices in Cassandra
0.7.0svn, but without any luck so far. I have the following code that should
create an index on ColA:
KsDef ksDef = client.describe_keyspace("MyKeyspace");
> List cfs = ksDef.cf_defs;
> String columnFamil
through
JMX, right? From there on I should be able to find my way around the system
:-)
On Thu, Sep 30, 2010 at 4:56 PM, Stu Hood wrote:
> Take a look at the get_indexed_slices method in the 0.7.0-beta Thrift
> interface.
>
> -Original Message-----
> From: "Christian Decke
BTW is there an official Roadmap which states when the 0.7 release is to be
expected?
On Thu, Sep 30, 2010 at 11:38 AM, Christian Decker <
decker.christ...@gmail.com> wrote:
> I just read through the tickets on Jira, and it appears that indices are
> implemented in the 0.7 source
n Thu, Sep 30, 2010 at 10:56 AM, Aaron Morton wrote:
> AFAIK indexes are still in dev. The only example is in the system_tests.py
> in the source tree.
>
> Aaron
>
>
> On 30 Sep 2010, at 20:10, Christian Decker
> wrote:
>
> Apparently I have blanked the 0.7 completely
sandra? Is it using the
> ColumnFamilyRecordReader? . The code in the internal RowIterator for that
> class has an example calling the cluster to get to the comparators.
>
> Aaron
>
>
> On 27 Sep, 2010,at 03:11 AM, Christian Decker
> wrote:
>
> Hi Aaron,
>
> what chang
representation
to use them in column names and keys.
Regards,
Chris
On Sun, Sep 26, 2010 at 5:20 AM, Aaron Morton wrote:
> Things a changing in v0.7, the row keys are byte arrays.
>
> Not sure I understand your other concerns.
>
> Aaron
>
>
> On 25 Sep 2010, at 08:10, C
Tyler Hobbs wrote:
> Yes, you can use describe_keyspace() and then look through the results.
> It's a little ugly in 0.6, but it works.
>
> - Tyler
>
>
> On Fri, Sep 24, 2010 at 11:25 AM, Christian Decker <
> decker.christ...@gmail.com> wrote:
>
>> Well I&
t. Could you clarify this?
>
>
> On Fri, Sep 24, 2010 at 10:56 AM, Christian Decker <
> decker.christ...@gmail.com> wrote:
>
>> Hi all,
>>
>> I'm having quite a dilemma with the CompareWith attribute. The Problem is
>> that I have numeric ID
Hi all,
I'm having quite a dilemma with the CompareWith attribute. The Problem is
that I have numeric IDs that I'd like to use as row keys, only that I also
have to offer a possibility to let users input them from std input. Since I
cannot ask my users to input an 8byte sequence representing the I
Hi all,
I have a rather strange problem I'd like to address. As I understand it a
write in cassandra always overwrites already existing data, so it is not
possible to have a way to create an index pointing to the first entry
matching some criteria. What I mean is that I have a CF which stores user
I'm wondering what the performance considerations are on Join-like queries.
I have a ColumnFamily that holds millions of records (not unusual as I
understand) and I want to work on them using Pig and Hadoop. Until now we
always fetched all rows in Cassandra and just filtered and worked on them.
Th
running setup 1)
it is still important to me to figure out what happens for the production
system.
Regards,
Chris
[1] http://snyke.net/tmp/screenshot_004.png
--
Christian Decker
Software Architect
http://blog.snyke.net
On Wed, Aug 18, 2010 at 2:17 PM, Christian Decker <
decker.christ...@gmail
Regards,
Chris
--
Christian Decker
Software Architect
http://blog.snyke.net
On Wed, Aug 18, 2010 at 8:09 PM, Stu Hood wrote:
> Needing to manually copy the jars to all of the nodes would mean that you
> aren't applying the Pig 'register ;' command properly.
>
> -----Origi
If, like me, you prefer to write your jobs on the fly try taking a look at
Pig. Cassandra provides a loadfunc under contrib/pig/ in the source package
which allows you to load data directly from Cassandra.
--
Christian Decker
Software Architect
http://blog.snyke.net
On Thu, Aug 19, 2010 at 7:23
/xeVkAkHu
--
Christian Decker
Software Architect
http://blog.snyke.net
nodes?
--
Christian Decker
Software Architect
http://blog.snyke.net
On Wed, Aug 18, 2010 at 3:28 PM, Jonathan Ellis wrote:
> why are you getting connection refused? do you have a firewall problem?
>
> On Wed, Aug 18, 2010 at 7:17 AM, Christian Decker
> wrote:
> > Hi all,
&g
sec if you're getting timeouts.
>
> On Wed, Aug 18, 2010 at 8:17 AM, Christian Decker
> wrote:
> > Hi all,
> > I'm trying to get Pig scripts to work on data in Cassandra and right now
> I
> > want to simply run the example-script.pig on a different Keyspace/CF
$RowIterator.maybeInit(ColumnFamilyRecordReader.java:151)
... 13 more
I checked that the cassandra cluster is running and all my 3 nodes are up
and working. As far as I see it the Jobtracker retries when it get those
errors but aborts once a large portion have failed. Any idea on why the
Cluster keeps dropping connections or timing out?
Regards,
Chris
--
Christian Decker
Software Architect
http://blog.snyke.net
r, or did I
miss something?
Regards,
Chris
--
Christian Decker
Software Architect
http://blog.snyke.net
On Tue, Aug 17, 2010 at 4:04 PM, Christian Decker <
decker.christ...@gmail.com> wrote:
> Ok, by now it's getting very strange. I deleted the entire installation and
> restarte
ed error: Error:
java.lang.ClassNotFoundException: org.apache.thrift.TBase
which is a bit different from my original error, but on the backend I get a
classic ClassNotFoundException.
Any ideas?
--
Christian Decker
Software Architect
http://blog.snyke.net
rms some magic to automatically register Jars
> containing classes directly referenced as UDFs.
>
> -Original Message-
> From: "Christian Decker"
> Sent: Friday, August 13, 2010 12:16pm
> To: user@cassandra.apache.org
> Subject: Re: Cassandra and Pig
>
> Wow, t
Original Message-
> From: "Christian Decker"
> Sent: Friday, August 13, 2010 11:30am
> To: user@cassandra.apache.org
> Subject: Cassandra and Pig
>
> Hi all,
>
> I'm trying to get Pig to read data from a Cassandra cluster, which I
> thought
> triv
Hi all,
I'm trying to get Pig to read data from a Cassandra cluster, which I thought
trivial since Cassandra already provides me with the CassandraStorage class.
Problem is that once I try executing a simple script like this:
register /path/to/pig-0.7.0-core.jar;register /path/to/libthrift-r91713
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