Ouch. Thanks for taking the time to handle that. - Tyler
On Thu, Nov 18, 2010 at 4:29 PM, Dr. Andrew Perella <a...@eutechnyx.com>wrote: > Actually it turns out there is a submitted patch for this already from > January 2009 but it was never accepted due to a complaint about an > unnecessary cast! I have modified and resubmitted the patch. > > > -----Original Message----- > From: Dr. Andrew Perella [mailto:a...@eutechnyx.com] > Sent: 18 November 2010 21:40 > To: user@cassandra.apache.org > Subject: RE: casssandra 0.7beta3, pycassa and windows client timestamps > > Thanks for the reminder - I will submit the patch :) > -----Original Message----- > From: Jonathan Ellis [mailto:jbel...@gmail.com] > Sent: 18 November 2010 21:37 > To: user > Subject: Re: casssandra 0.7beta3, pycassa and windows client timestamps > > Interesting! > > Did you post your patch to the Thrift project? > > On Thu, Nov 18, 2010 at 2:13 PM, Dr. Andrew Perella <a...@eutechnyx.com> > wrote: > > UPDATE: Solved > > > > > > > > After digging deeper I realised that I had patched fastbinary incorrectly > > for compiling under visual studio on windows and was left with the wrong > > endian define. > > > > As the app often worked it never crossed my mind to check this out! > > > > Many thanks Tyler for all your suggestions. > > > > > > > > Regards, > > > > Andrew > > > > > > > > > > > > > > > > From: Tyler Hobbs [mailto:ty...@riptano.com] > > Sent: 18 November 2010 00:00 > > To: user@cassandra.apache.org > > Subject: Re: casssandra 0.7beta3, pycassa and windows client timestamps > > > > > > > > No, there's no client side caching. > > > > Assuming you're using insert(), could you capture both of these: > > - the return value of insert() > > - the same thing you captured before in the Cassandra log > > > > so that we can verify that the timestamp is greater than what's stored in > > Cassandra? > > > > Tyler > > > > On Wed, Nov 17, 2010 at 5:49 PM, Dr. Andrew Perella <a...@eutechnyx.com> > > wrote: > > > > Oh - that was unexpected! I am using pycassa 0.5.2 and thrift 0.5.0 > > > > I wasn't aware any client side caching would take place? > > > > > > > > > > > > > > > > From: Tyler Hobbs [mailto:ty...@riptano.com] > > Sent: 17 November 2010 23:34 > > > > To: user@cassandra.apache.org > > Subject: Re: casssandra 0.7beta3, pycassa and windows client timestamps > > > > > > > > Well, the write appears to be succeeding, and since you say this works on > > Linux, it sounds like a client side problem. > > > > Are you using pycassa or are you dealing with raw Thrift. If pycassa, > what > > version? > > > > - Tyler > > > > On Wed, Nov 17, 2010 at 5:02 PM, Dr. Andrew Perella <a...@eutechnyx.com> > > wrote: > > > > Thanks Tyler - here is the log when I call this: > > > > > > > > > > > > DEBUG 22:59:42,914 get_slice > > > > DEBUG 22:59:42,915 strongread reading data for > > SliceFromReadCommand(table='ACRKeyspace_purify', key='31', > > column_parent='QueryPath(columnFamilyName='UserOwnedCars', > > superColumnName='null', columnName='null')', start='', finish='', > > reversed=false, count=100) from 9...@localhost/127.0.0.1 > > > > DEBUG 22:59:42,916 collecting 0 of 100: 2885:false:3...@592255573044823040 > > > > DEBUG 22:59:42,916 collecting 1 of 100: 3272:false:3...@2320511930048250880 > > > > DEBUG 22:59:42,917 collecting 2 of 100: 3363:false:3...@592255573044823040 > > > > DEBUG 22:59:42,917 collecting 3 of 100: > > currentCarUID:false:3...@8670115967555404800 > > > > DEBUG 22:59:42,917 Read key java.nio.HeapByteBuffer[pos=0 lim=1 cap=1]; > > sending response to 282f307a-0b07-7b07-c340-88e847bef...@localhost/ > 127.0.0.1 > > > > DEBUG 22:59:42,917 Processing response on a callback from > > 282f307a-0b07-7b07-c340-88e847bef...@localhost/127.0.0.1 > > > > DEBUG 22:59:42,917 resolving 1 responses > > > > DEBUG 22:59:42,917 resolve: 0 ms. > > > > DEBUG 22:59:42,917 quorumResponseHandler: 1 ms. > > > > DEBUG 22:59:42,930 batch_mutate > > > > DEBUG 22:59:42,931 insert writing local > > RowMutation(keyspace='ACRKeyspace_purify', key='31', > > modifications=[UserOwnedCars]) > > > > DEBUG 22:59:42,935 get_slice > > > > DEBUG 22:59:42,936 strongread reading data for > > SliceFromReadCommand(table='ACRKeyspace_purify', key='31', > > column_parent='QueryPath(columnFamilyName='UserOwnedCars', > > superColumnName='null', columnName='null')', start='', finish='', > > reversed=false, count=100) from 9...@localhost/127.0.0.1 > > > > DEBUG 22:59:42,936 collecting 0 of 100: 2885:false:3...@592255573044823040 > > > > DEBUG 22:59:42,936 collecting 1 of 100: 3272:false:3...@2320511930048250880 > > > > DEBUG 22:59:42,936 collecting 2 of 100: 3363:false:3...@592255573044823040 > > > > DEBUG 22:59:42,936 collecting 3 of 100: > > currentCarUID:false:3...@8670115967555404800 > > > > DEBUG 22:59:42,937 Read key java.nio.HeapByteBuffer[pos=0 lim=1 cap=1]; > > sending response to 32e4f8f8-2df0-8803-ebb6-ac2eaf2e5...@localhost/ > 127.0.0.1 > > > > DEBUG 22:59:42,937 Processing response on a callback from > > 32e4f8f8-2df0-8803-ebb6-ac2eaf2e5...@localhost/127.0.0.1 > > > > DEBUG 22:59:42,937 resolving 1 responses > > > > DEBUG 22:59:42,937 resolve: 0 ms. > > > > DEBUG 22:59:42,937 quorumResponseHandler: 0 ms. > > > > > > > > > > > > From: Tyler Hobbs [mailto:ty...@riptano.com] > > Sent: 17 November 2010 22:56 > > > > To: user@cassandra.apache.org > > Subject: Re: casssandra 0.7beta3, pycassa and windows client timestamps > > > > > > > > Can you turn on debug logging on Cassandra (change INFO to debug in > > conf/log4j-server.properties) and see what happens when you send a write > > that doesn't seem to have an effect? > > > > - Tyler > > > > On Wed, Nov 17, 2010 at 4:40 PM, Dr. Andrew Perella <a...@eutechnyx.com> > > wrote: > > > > The value I want to change is: > > > > > > > > ColumnOrSuperColumn(column=Column(timestamp=1290033433618000L, > > name='currentCarUID', value='82b50f91663f42ee8a740447efa1bdae', > ttl=None), > > super_column=None) > > > > > > > > and I try to overwrite it with: > > > > > > > > Mutation(column_or_supercolumn= > > > > ColumnOrSuperColumn(column=Column(timestamp=1290033474541000L, > > name=u'currentCarUID', value='e7d0cac632134c479110b6f0bb5ca6ea', > ttl=None), > > super_column=None), deletion=None) > > > > > > > > I am just running a single node test machine. > > > > > > > > I am using it to run multiple keyspaces for other services (from other > > clients) if that might be relevant at all. > > > > > > > > > > > > From: Tyler Hobbs [mailto:ty...@riptano.com] > > Sent: 17 November 2010 22:33 > > > > To: user@cassandra.apache.org > > Subject: Re: casssandra 0.7beta3, pycassa and windows client timestamps > > > > > > > > Can you give me an example of what your writes look like here? > > > > Are you running a multinode cluster or just one instance of Cassandra? > > > > - Tyler > > > > On Wed, Nov 17, 2010 at 4:30 PM, Dr. Andrew Perella <a...@eutechnyx.com> > > wrote: > > > > Miliseconds - but that's not the problem - I can wait 10 minutes and > still > > not get the value updated! Other times I can update many times a second > - > > it just seems random! > > > > > > > > From: Tyler Hobbs [mailto:ty...@riptano.com] > > Sent: 17 November 2010 22:28 > > To: user@cassandra.apache.org > > Subject: Re: casssandra 0.7beta3, pycassa and windows client timestamps > > > > > > > > What resolution does time.time() give you in Windows? > > > > - Tyler > > > > On Wed, Nov 17, 2010 at 4:23 PM, Dr. Andrew Perella <a...@eutechnyx.com> > > wrote: > > > > I have encountered a strange problem with values not being written to > > Cassandra very often. > > > > It looks like it is a windows client timestamp problem. I cannot detect a > > pattern as to when a timestamp will allow an update however if I run my > > client (in a web server) on linux then the problem goes away. > > > > > > > > Has anyone seen anything like this or will I need to delve deeper into > > thift? > > > > > > > > FYI I am using pythons int(time.time()*1e6) as a timestamp > > > > > > > > Best Regards, > > > > Andrew > > > > This e-mail is confidential and may be privileged. It may be read, copied > > and used only by the intended recipient. No communication sent by e-mail > to > > or from Eutechnyx is intended to give rise to contractual or other legal > > liability, apart from liability which cannot be excluded under English > law. > > > > This email has been scanned for all known viruses by www.epagency.net. > > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > > > > > > > > This email has been scanned for all known viruses by the Email Protection > > Agency > > > > This e-mail is confidential and may be privileged. It may be read, copied > > and used only by the intended recipient. No communication sent by e-mail > to > > or from Eutechnyx is intended to give rise to contractual or other legal > > liability, apart from liability which cannot be excluded under English > law. > > > > This email has been scanned for all known viruses by www.epagency.net. > > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > > > > > > > > This email has been scanned for all known viruses by the Email Protection > > Agency > > > > This e-mail is confidential and may be privileged. It may be read, copied > > and used only by the intended recipient. No communication sent by e-mail > to > > or from Eutechnyx is intended to give rise to contractual or other legal > > liability, apart from liability which cannot be excluded under English > law. > > > > This email has been scanned for all known viruses by www.epagency.net. > > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > > > > > > > > This email has been scanned for all known viruses by the Email Protection > > Agency > > > > This e-mail is confidential and may be privileged. It may be read, copied > > and used only by the intended recipient. No communication sent by e-mail > to > > or from Eutechnyx is intended to give rise to contractual or other legal > > liability, apart from liability which cannot be excluded under English > law. > > > > This email has been scanned for all known viruses by www.epagency.net. > > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > > > > > > > > This email has been scanned for all known viruses by the Email Protection > > Agency > > > > This e-mail is confidential and may be privileged. It may be read, copied > > and used only by the intended recipient. No communication sent by e-mail > to > > or from Eutechnyx is intended to give rise to contractual or other legal > > liability, apart from liability which cannot be excluded under English > law. > > > > This email has been scanned for all known viruses by www.epagency.net. > > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > > > > > > > > This email has been scanned for all known viruses by the Email Protection > > Agency > > > > This e-mail is confidential and may be privileged. It may be read, copied > > and used only by the intended recipient. No communication sent by e-mail > to > > or from Eutechnyx is intended to give rise to contractual or other legal > > liability, apart from liability which cannot be excluded under English > law. > > > > This email has been scanned for all known viruses by www.epagency.net. > > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the source for professional Cassandra support > http://riptano.com > This email has been scanned for all known viruses by the Email Protection > Agency. > This e-mail is confidential and may be privileged. It may be read, copied > and used only by the intended recipient. No communication sent by e-mail to > or from Eutechnyx is intended to give rise to contractual or other legal > liability, apart from liability which cannot be excluded under English law. > > This email has been scanned for all known viruses by the Email Protection > Agency. http://www.epagency.net > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 > This email has been scanned for all known viruses by the Email Protection > Agency. > This e-mail is confidential and may be privileged. It may be read, copied > and used only by the intended recipient. No communication sent by e-mail to > or from Eutechnyx is intended to give rise to contractual or other legal > liability, apart from liability which cannot be excluded under English law. > > This email has been scanned for all known viruses by the Email Protection > Agency. http://www.epagency.net > > > www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322 >
