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Posted to user@cassandra.apache.org by mo...@gmail.com on 2009/07/19 19:18:34 UTC
AttributeError: 'str' object has no attribute 'write'
*Hi guys *
*the new trunk cassandra doesnt work for a simple insert, how do we get this
working*
*
*
*client.insert('Table1', 'tofu', 'Super1:Related:tofu
stew',pickle.dumps(dict(count=1)), time.time(), 0)*
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
/home/mark/work/cexperiments/<ipython console> in <module>()
/home/mark/work/common/cassandra/Cassandra.py in insert(self, table, key,
column_path, value, timestamp, block_for)
358 - block_for
359 """
--> 360 self.send_insert(table, key, column_path, value, timestamp,
block_for)
361 self.recv_insert()
362
/home/mark/work/common/cassandra/Cassandra.py in send_insert(self, table,
key, column_path, value, timestamp, block_for)
370 args.timestamp = timestamp
371 args.block_for = block_for
--> 372 args.write(self._oprot)
373 self._oprot.writeMessageEnd()
374 self._oprot.trans.flush()
/home/mark/work/common/cassandra/Cassandra.py in write(self, oprot)
1923 if self.column_path != None:
1924 oprot.writeFieldBegin('column_path', TType.STRUCT, 3)
-> 1925 self.column_path.write(oprot)
1926 oprot.writeFieldEnd()
1927 if self.value != None:
AttributeError: 'str' object has no attribute 'write'
In [4]: client.insert('Table1', 'tofu', 'Super1:Related:tofu
stew',pickle.dumps(dict(count=1)), time.time(), 0)
--
Bidegg worlds best auction site
http://bidegg.com
Re: AttributeError: 'str' object has no attribute 'write'
Posted by Jonathan Ellis <jb...@gmail.com>.
Building the java interface is part of the build, but ant has no way
to guess which additional client interfaces you want to use, if any.
On Sun, Jul 19, 2009 at 6:46 PM, Ian Holsman<ia...@holsman.net> wrote:
> hi Gasol.
> shouldn't regeneration of the interface be part of the build process?
>
> On 20/07/2009, at 3:29 AM, Gasol Wu wrote:
>
>> hi,
>> the cassandra.thrift has changed.
>> u need to generate new python client and compile class again.
>>
>>
>> On Mon, Jul 20, 2009 at 1:18 AM, <mo...@gmail.com> wrote:
>> Hi guys
>> the new trunk cassandra doesnt work for a simple insert, how do we get
>> this working
>>
>> client.insert('Table1', 'tofu', 'Super1:Related:tofu
>> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>>
>> ---------------------------------------------------------------------------
>> AttributeError Traceback (most recent call
>> last)
>>
>> /home/mark/work/cexperiments/<ipython console> in <module>()
>>
>> /home/mark/work/common/cassandra/Cassandra.py in insert(self, table, key,
>> column_path, value, timestamp, block_for)
>> 358 - block_for
>> 359 """
>> --> 360 self.send_insert(table, key, column_path, value, timestamp,
>> block_for)
>> 361 self.recv_insert()
>> 362
>>
>> /home/mark/work/common/cassandra/Cassandra.py in send_insert(self, table,
>> key, column_path, value, timestamp, block_for)
>> 370 args.timestamp = timestamp
>> 371 args.block_for = block_for
>> --> 372 args.write(self._oprot)
>> 373 self._oprot.writeMessageEnd()
>> 374 self._oprot.trans.flush()
>>
>> /home/mark/work/common/cassandra/Cassandra.py in write(self, oprot)
>> 1923 if self.column_path != None:
>> 1924 oprot.writeFieldBegin('column_path', TType.STRUCT, 3)
>> -> 1925 self.column_path.write(oprot)
>> 1926 oprot.writeFieldEnd()
>> 1927 if self.value != None:
>>
>> AttributeError: 'str' object has no attribute 'write'
>> In [4]: client.insert('Table1', 'tofu', 'Super1:Related:tofu
>> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>>
>>
>> --
>> Bidegg worlds best auction site
>> http://bidegg.com
>>
>
> --
> Ian Holsman
> Ian@Holsman.net
>
>
>
>
Re: AttributeError: 'str' object has no attribute 'write'
Posted by mo...@gmail.com.
Thanks Gasol wuthis helped
On Sun, Jul 19, 2009 at 7:22 PM, Gasol Wu <ga...@gmail.com> wrote:
> Hi Ian,
>
> http://issues.apache.org/jira/browse/CASSANDRA-139
>
> 1.regeneration python client
> cd $CASSANDRA_HOME/interface
> thrift --gen py cassandra.thrift
> 2.recompile cassandra
> cd $CASSANDRA_HOME
> ant
> 3.modify your code.
>
> below is my php code that i changed.
> old:
> $client->insert($table, $i, 'Standard1:md5', md5($i), $time, $block);
>
> new trunk:
> $cp_md5 = new cassandra_ColumnPath(array('column_family' => 'Standard1',
> 'column' => 'md5'));
> $client->insert($table, $i, $cp_md5, md5($i), $time, $block);
>
>
>
> On Mon, Jul 20, 2009 at 7:46 AM, Ian Holsman <ia...@holsman.net> wrote:
>
>> hi Gasol.
>> shouldn't regeneration of the interface be part of the build process?
>>
>>
>> On 20/07/2009, at 3:29 AM, Gasol Wu wrote:
>>
>> hi,
>>> the cassandra.thrift has changed.
>>> u need to generate new python client and compile class again.
>>>
>>>
>>> On Mon, Jul 20, 2009 at 1:18 AM, <mo...@gmail.com> wrote:
>>> Hi guys
>>> the new trunk cassandra doesnt work for a simple insert, how do we get
>>> this working
>>>
>>> client.insert('Table1', 'tofu', 'Super1:Related:tofu
>>> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>>>
>>> ---------------------------------------------------------------------------
>>> AttributeError Traceback (most recent call
>>> last)
>>>
>>> /home/mark/work/cexperiments/<ipython console> in <module>()
>>>
>>> /home/mark/work/common/cassandra/Cassandra.py in insert(self, table, key,
>>> column_path, value, timestamp, block_for)
>>> 358 - block_for
>>> 359 """
>>> --> 360 self.send_insert(table, key, column_path, value, timestamp,
>>> block_for)
>>> 361 self.recv_insert()
>>> 362
>>>
>>> /home/mark/work/common/cassandra/Cassandra.py in send_insert(self, table,
>>> key, column_path, value, timestamp, block_for)
>>> 370 args.timestamp = timestamp
>>> 371 args.block_for = block_for
>>> --> 372 args.write(self._oprot)
>>> 373 self._oprot.writeMessageEnd()
>>> 374 self._oprot.trans.flush()
>>>
>>> /home/mark/work/common/cassandra/Cassandra.py in write(self, oprot)
>>> 1923 if self.column_path != None:
>>> 1924 oprot.writeFieldBegin('column_path', TType.STRUCT, 3)
>>> -> 1925 self.column_path.write(oprot)
>>> 1926 oprot.writeFieldEnd()
>>> 1927 if self.value != None:
>>>
>>> AttributeError: 'str' object has no attribute 'write'
>>> In [4]: client.insert('Table1', 'tofu', 'Super1:Related:tofu
>>> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>>>
>>>
>>> --
>>> Bidegg worlds best auction site
>>> http://bidegg.com
>>>
>>>
>> --
>> Ian Holsman
>> Ian@Holsman.net
>>
>>
>>
>>
>
--
Bidegg worlds best auction site
http://bidegg.com
Re: AttributeError: 'str' object has no attribute 'write'
Posted by Gasol Wu <ga...@gmail.com>.
Hi Ian,
http://issues.apache.org/jira/browse/CASSANDRA-139
1.regeneration python client
cd $CASSANDRA_HOME/interface
thrift --gen py cassandra.thrift
2.recompile cassandra
cd $CASSANDRA_HOME
ant
3.modify your code.
below is my php code that i changed.
old:
$client->insert($table, $i, 'Standard1:md5', md5($i), $time, $block);
new trunk:
$cp_md5 = new cassandra_ColumnPath(array('column_family' => 'Standard1',
'column' => 'md5'));
$client->insert($table, $i, $cp_md5, md5($i), $time, $block);
On Mon, Jul 20, 2009 at 7:46 AM, Ian Holsman <ia...@holsman.net> wrote:
> hi Gasol.
> shouldn't regeneration of the interface be part of the build process?
>
>
> On 20/07/2009, at 3:29 AM, Gasol Wu wrote:
>
> hi,
>> the cassandra.thrift has changed.
>> u need to generate new python client and compile class again.
>>
>>
>> On Mon, Jul 20, 2009 at 1:18 AM, <mo...@gmail.com> wrote:
>> Hi guys
>> the new trunk cassandra doesnt work for a simple insert, how do we get
>> this working
>>
>> client.insert('Table1', 'tofu', 'Super1:Related:tofu
>> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>>
>> ---------------------------------------------------------------------------
>> AttributeError Traceback (most recent call
>> last)
>>
>> /home/mark/work/cexperiments/<ipython console> in <module>()
>>
>> /home/mark/work/common/cassandra/Cassandra.py in insert(self, table, key,
>> column_path, value, timestamp, block_for)
>> 358 - block_for
>> 359 """
>> --> 360 self.send_insert(table, key, column_path, value, timestamp,
>> block_for)
>> 361 self.recv_insert()
>> 362
>>
>> /home/mark/work/common/cassandra/Cassandra.py in send_insert(self, table,
>> key, column_path, value, timestamp, block_for)
>> 370 args.timestamp = timestamp
>> 371 args.block_for = block_for
>> --> 372 args.write(self._oprot)
>> 373 self._oprot.writeMessageEnd()
>> 374 self._oprot.trans.flush()
>>
>> /home/mark/work/common/cassandra/Cassandra.py in write(self, oprot)
>> 1923 if self.column_path != None:
>> 1924 oprot.writeFieldBegin('column_path', TType.STRUCT, 3)
>> -> 1925 self.column_path.write(oprot)
>> 1926 oprot.writeFieldEnd()
>> 1927 if self.value != None:
>>
>> AttributeError: 'str' object has no attribute 'write'
>> In [4]: client.insert('Table1', 'tofu', 'Super1:Related:tofu
>> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>>
>>
>> --
>> Bidegg worlds best auction site
>> http://bidegg.com
>>
>>
> --
> Ian Holsman
> Ian@Holsman.net
>
>
>
>
Re: a talk on building an email app on Cassandra
Posted by Jun Rao <ju...@almaden.ibm.com>.
This is on a trunk version of cassandra in June. Currently, this is just a
prototype. We don't have any real users running on the cassandra-based
backend yet.
Jun
IBM Almaden Research Center
K55/B1, 650 Harry Road, San Jose, CA 95120-6099
junrao@almaden.ibm.com
Evan Weaver <ew...@gmail.com> wrote on 07/20/2009 11:58:37 AM:
>
> Woah, nice!
>
> One year development on the Cassandra backend? That's intense. What
> build are you running? Is this fully productionized and being used at
> IBM?
>
> Evan
>
> On Mon, Jul 20, 2009 at 11:07 AM, Jonathan Ellis<jb...@gmail.com>
wrote:
> > Nice!
> >
> > On Mon, Jul 20, 2009 at 12:43 PM, Jun Rao<ju...@almaden.ibm.com>
wrote:
> >> Last Friday, I gave an IEEE talk on an email app that we built on top
of
> >> Cassandra. Below is the link to the slides. I thought some of the
people
> >> here might find this interesting.
> >>
> >> http://ewh.ieee.org/r6/scv/computer//nfic/2009/IBM-Jun-Rao.pdf
> >>
> >> Jun
> >> IBM Almaden Research Center
> >> K55/B1, 650 Harry Road, San Jose, CA 95120-6099
> >>
> >> junrao@almaden.ibm.com
> >>
> >
>
>
>
> --
> Evan Weaver
Re: a talk on building an email app on Cassandra
Posted by Evan Weaver <ew...@gmail.com>.
Woah, nice!
One year development on the Cassandra backend? That's intense. What
build are you running? Is this fully productionized and being used at
IBM?
Evan
On Mon, Jul 20, 2009 at 11:07 AM, Jonathan Ellis<jb...@gmail.com> wrote:
> Nice!
>
> On Mon, Jul 20, 2009 at 12:43 PM, Jun Rao<ju...@almaden.ibm.com> wrote:
>> Last Friday, I gave an IEEE talk on an email app that we built on top of
>> Cassandra. Below is the link to the slides. I thought some of the people
>> here might find this interesting.
>>
>> http://ewh.ieee.org/r6/scv/computer//nfic/2009/IBM-Jun-Rao.pdf
>>
>> Jun
>> IBM Almaden Research Center
>> K55/B1, 650 Harry Road, San Jose, CA 95120-6099
>>
>> junrao@almaden.ibm.com
>>
>
--
Evan Weaver
Re: a talk on building an email app on Cassandra
Posted by Jonathan Ellis <jb...@gmail.com>.
Nice!
On Mon, Jul 20, 2009 at 12:43 PM, Jun Rao<ju...@almaden.ibm.com> wrote:
> Last Friday, I gave an IEEE talk on an email app that we built on top of
> Cassandra. Below is the link to the slides. I thought some of the people
> here might find this interesting.
>
> http://ewh.ieee.org/r6/scv/computer//nfic/2009/IBM-Jun-Rao.pdf
>
> Jun
> IBM Almaden Research Center
> K55/B1, 650 Harry Road, San Jose, CA 95120-6099
>
> junrao@almaden.ibm.com
>
Re: a talk on building an email app on Cassandra
Posted by Michael Greene <mi...@gmail.com>.
That looks really great, thanks for sharing with us. Can you add that
to http://wiki.apache.org/cassandra/ArticlesAndPresentations ?
Michael
On Mon, Jul 20, 2009 at 12:43 PM, Jun Rao<ju...@almaden.ibm.com> wrote:
> Last Friday, I gave an IEEE talk on an email app that we built on top of
> Cassandra. Below is the link to the slides. I thought some of the people
> here might find this interesting.
>
> http://ewh.ieee.org/r6/scv/computer//nfic/2009/IBM-Jun-Rao.pdf
>
> Jun
> IBM Almaden Research Center
> K55/B1, 650 Harry Road, San Jose, CA 95120-6099
>
> junrao@almaden.ibm.com
>
Re: a talk on building an email app on Cassandra
Posted by Neophytos Demetriou <ne...@gmail.com>.
Jun Rao wrote:
> I thought some of the people
> here might find this interesting.
I did. Thank you very much Jun.
- Neophytos
a talk on building an email app on Cassandra
Posted by Jun Rao <ju...@almaden.ibm.com>.
Last Friday, I gave an IEEE talk on an email app that we built on top of
Cassandra. Below is the link to the slides. I thought some of the people
here might find this interesting.
http://ewh.ieee.org/r6/scv/computer//nfic/2009/IBM-Jun-Rao.pdf
Jun
IBM Almaden Research Center
K55/B1, 650 Harry Road, San Jose, CA 95120-6099
junrao@almaden.ibm.com
Re: AttributeError: 'str' object has no attribute 'write'
Posted by Eric Evans <ee...@rackspace.com>.
On Mon, 2009-07-20 at 09:46 +1000, Ian Holsman wrote:
> shouldn't regeneration of the interface be part of the build process?
As a convenience, there is an ant target called "gen-thrift-py", but
it's left to users to run since we are not checking generated python
into subversion.
--
Eric Evans
eevans@rackspace.com
Re: AttributeError: 'str' object has no attribute 'write'
Posted by Ian Holsman <ia...@holsman.net>.
hi Gasol.
shouldn't regeneration of the interface be part of the build process?
On 20/07/2009, at 3:29 AM, Gasol Wu wrote:
> hi,
> the cassandra.thrift has changed.
> u need to generate new python client and compile class again.
>
>
> On Mon, Jul 20, 2009 at 1:18 AM, <mo...@gmail.com> wrote:
> Hi guys
> the new trunk cassandra doesnt work for a simple insert, how do we
> get this working
>
> client.insert('Table1', 'tofu', 'Super1:Related:tofu
> stew',pickle.dumps(dict(count=1)), time.time(), 0)
> ---------------------------------------------------------------------------
> AttributeError Traceback (most recent
> call last)
>
> /home/mark/work/cexperiments/<ipython console> in <module>()
>
> /home/mark/work/common/cassandra/Cassandra.py in insert(self, table,
> key, column_path, value, timestamp, block_for)
> 358 - block_for
> 359 """
> --> 360 self.send_insert(table, key, column_path, value,
> timestamp, block_for)
> 361 self.recv_insert()
> 362
>
> /home/mark/work/common/cassandra/Cassandra.py in send_insert(self,
> table, key, column_path, value, timestamp, block_for)
> 370 args.timestamp = timestamp
> 371 args.block_for = block_for
> --> 372 args.write(self._oprot)
> 373 self._oprot.writeMessageEnd()
> 374 self._oprot.trans.flush()
>
> /home/mark/work/common/cassandra/Cassandra.py in write(self, oprot)
> 1923 if self.column_path != None:
> 1924 oprot.writeFieldBegin('column_path', TType.STRUCT, 3)
> -> 1925 self.column_path.write(oprot)
> 1926 oprot.writeFieldEnd()
> 1927 if self.value != None:
>
> AttributeError: 'str' object has no attribute 'write'
> In [4]: client.insert('Table1', 'tofu', 'Super1:Related:tofu
> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>
>
> --
> Bidegg worlds best auction site
> http://bidegg.com
>
--
Ian Holsman
Ian@Holsman.net
Re: AttributeError: 'str' object has no attribute 'write'
Posted by Gasol Wu <ga...@gmail.com>.
hi,
the cassandra.thrift has changed.
u need to generate new python client and compile class again.
On Mon, Jul 20, 2009 at 1:18 AM, <mo...@gmail.com> wrote:
> *Hi guys *
> *the new trunk cassandra doesnt work for a simple insert, how do we get
> this working*
> *
> *
> *client.insert('Table1', 'tofu', 'Super1:Related:tofu
> stew',pickle.dumps(dict(count=1)), time.time(), 0)*
> ---------------------------------------------------------------------------
> AttributeError Traceback (most recent call last)
>
> /home/mark/work/cexperiments/<ipython console> in <module>()
>
> /home/mark/work/common/cassandra/Cassandra.py in insert(self, table, key,
> column_path, value, timestamp, block_for)
> 358 - block_for
> 359 """
> --> 360 self.send_insert(table, key, column_path, value, timestamp,
> block_for)
> 361 self.recv_insert()
> 362
>
> /home/mark/work/common/cassandra/Cassandra.py in send_insert(self, table,
> key, column_path, value, timestamp, block_for)
> 370 args.timestamp = timestamp
> 371 args.block_for = block_for
> --> 372 args.write(self._oprot)
> 373 self._oprot.writeMessageEnd()
> 374 self._oprot.trans.flush()
>
> /home/mark/work/common/cassandra/Cassandra.py in write(self, oprot)
> 1923 if self.column_path != None:
> 1924 oprot.writeFieldBegin('column_path', TType.STRUCT, 3)
> -> 1925 self.column_path.write(oprot)
> 1926 oprot.writeFieldEnd()
> 1927 if self.value != None:
>
> AttributeError: 'str' object has no attribute 'write'
> In [4]: client.insert('Table1', 'tofu', 'Super1:Related:tofu
> stew',pickle.dumps(dict(count=1)), time.time(), 0)
>
>
> --
> Bidegg worlds best auction site
> http://bidegg.com
>