On Fri, Sep 24, 2010 at 7:12 PM, Lucas Nodine wrote:
> I am working with 0.7.0-beta1 (distribution from bin on website)
>
> First, am I correct in that since beta1 keys are now bytes instead of
> strings?
Yes.
> Second, should there be additional data before the key value that I specify
> (read
I am working with 0.7.0-beta1 (distribution from bin on website)
First, am I correct in that since beta1 keys are now bytes instead of
strings?
Second, should there be additional data before the key value that I specify
(read below for explaination)?
I am attempting to perform a batch mutation w
There is some information on the wiki
http://wiki.apache.org/cassandra/HadoopSupport about a resource leak before
0.6.2 versions that can result in a TimeoutException. But you're on 0.6.5 so
should be ok.
I had a quick look at the Hadoop code and could not see where to change the
timeout (tha
I've been looking at the Cassandra, Couch DB, Hadoop offerings at Apache Con in
Atlanta http://na.apachecon.com/c/acna2010/schedule/grid.
Aside from the social aspect does anyone have an idea of how valuable these
events are? I've got a reasonable view of Cassandra from the outside, and a
very
by 0.7 I meant Cassandra 0.7
On Fri, Sep 24, 2010 at 4:18 PM, Mark wrote:
> I am using Pig v0.7 and Cassandra v0.6.5. The example that comes bundles up
> in Cassandra under contrib/pig uses unframed by default. When I use the
> default configuration for Cassandra then the Pig contrib works as ex
I am using Pig v0.7 and Cassandra v0.6.5. The example that comes
bundles up in Cassandra under contrib/pig uses unframed by default. When
I use the default configuration for Cassandra then the Pig contrib works
as expected. However when I change the configuration to framed then pig
just freeze
My rows consist of only *60 *columns and these 60 columns looks like this:
ColumnName: Sensor59 -- Value: 434.2647915698039 -- TTL: 10800
On 9/24/2010 3:42 PM, Jonathan Ellis wrote:
looks like you're OOMing trying to compact a very large row. solution:
smaller rows, or larger heap.
On Fri, S
I don't think you can (although in 0.7 framed is the default for Pig
like everything else).
On Fri, Sep 24, 2010 at 2:14 PM, Mark wrote:
> How does one enable framed transport when using the pig loadfunc?
>
> Thanks
>
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, t
Thanks Jonathan. I have this part figured out now :)
Can you explain to me how I can get this to work with Framed support. It
just hangs now and doesn't return anything
On 9/24/10 3:39 PM, Jonathan Ellis wrote:
pig doesn't have the thrift jar on its classpath
On Fri, Sep 24, 2010 at 10:32 A
looks like you're OOMing trying to compact a very large row. solution:
smaller rows, or larger heap.
On Fri, Sep 24, 2010 at 3:03 PM, Alaa Zubaidi wrote:
> Nothing is working, after disabling swap entirely, the heap is not
> exhausted but Cassandra crashed with out of memory error.
> I even slow
pig doesn't have the thrift jar on its classpath
On Fri, Sep 24, 2010 at 10:32 AM, Mark wrote:
> I am trying to run the Cassandra pig example but I keep receiving...
>
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to
> open iterator for alias rows
> at org.apache.pi
How does one enable framed transport when using the pig loadfunc?
Thanks
Thanks for your quick answer, I think I'll use an affix to sort of cast the
keys, ranges and others from their textual representation (from Pig) to the
desired byte representation, since I just noticed that the keys for the rows
themselfs are always UTF8 interpreted, and since I want to make key-ra
Hi Experts,
I need help on an exception integrating cassandra-hadoop. I am getting
the following exception, when running a Hadoop Map reduce job
http://pastebin.com/RktaqDnj
I am using cassandra 0.6.5 , 3 node cluster. I don't get any exception
when the data I am processing is very small < 5
?Nate & Lucas thanks for the responses.
Nate, I think it would be asking a bit much to suggest the hector team
implement convenience methods for
a graph representations. But if we went ahead and forked hector, I'd be sure
to contribute back what i can and just release it as another client
or if
Take a look at your particular implementation of
org.apache.cassandra.dht.IPartitioner: each partitioner: creates tokens in a
different way, but all of them are straightforward.
- Reply message -
From: "Dwight Smith"
Date: Fri, Sep 24, 2010 1:07 pm
Subject: How can the cassandra token o
This question relates to a C++ client application, to direct the
Cassandra request to the correct Cassandra node based on token form of
the key.
Would the following work? If the token form of the key could be
determined - the keyspace description could be used to select the
correct Cassandra no
I am trying to run the Cassandra pig example but I keep receiving...
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable
to open iterator for alias rows
at org.apache.pig.PigServer.openIterator(PigServer.java:521)
at
org.apache.pig.tools.grunt.GruntParser.processDum
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'm writing a loading function for Pig, and as it happens I want to be
> able to
Well I'm writing a loading function for Pig, and as it happens I want to be
able to load slices from cassandra which are specified in the pig script
(thus the input from stdin) but the ColumnFamily from which to read the data
is another parameter and some of the CFs have UTF8, UUID, TimeUUID or Lon
I'm not sure I understand why using this with multiple column families
prevents you from converting it. 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 Pro
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
> My idea however was to fork hector, remove all the stuff i don't need and
> turn it into a graph API sitting on top of Cassandra.
We are always looking for ideas and design feedback regarding Hector.
Please feel free to make suggestions or fork and send pull requests.
http://groups.google.com/gr
Just a tip for evaluation. Reads using Cassandra are expensive. Each link
in the graph would probably require a read transaction. I have never used a
graph db, but I would expect their API will be much more efficient for your
needs. Just something to consider before deciding.
Good luck!
- Luc
?Apoligies for the first e-mail with the misleading subject i was reading a
thread and mistakenly replied
I've been using Cassandra for a while now and no problems. I have a new
project coming up now that we're penciling out the data structure for.
The best we've come up with has turned into a
Hi all.
I want share one idea about how to documet Cassandra ColumnFamily structure.
I found software called "XMind" (it's free) and it allow easy draw schema
like this:
http://s57.radikal.ru/i158/1009/2a/a94e13a98e1e.jpg
I suppose it's important to have big picture about your data structure.
Hop
For the record,
I solved this by bouncing the cluster down to 0.6.5 and then following the
upgrade procedure to the nightly build.
I couldn't find any way of going from 0.7.0.beta1->nightly. I'm wondering
if there is a potential problem looming for beta1->beta2 upgrades ?
Andy
> On 22/09/20
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