Naresh, Windows is not my cup of tea. May be someone else has more experience using the Redmond's prodigy child.
cheers, and good luck On Tue, Aug 13, 2013 at 11:21 AM, Naresh Yadav <nyadav....@gmail.com> wrote: > Hi Alex, > > Yes i am testing in development environment of Windows 7 64bit. > I left default yaml then cassandra created "var" folder and created data, > log, cache folders in it.....I tried commit log on different harddisk but > this problem not solved with that....I guess this problem is somewhat > related to deadlock in Native Transport threads...thats why cassandra is > hanging indefinitly.. > > Naresh > > On Tue, Aug 13, 2013 at 7:21 PM, Alexis Rodríguez < > arodrig...@inconcertcc.com> wrote: > >> Naresh, are you deploying cassandra in windows? >> >> If that is the case you may need to change the data and commitlog >> directories in cassandra.yaml. Also you should check the log directories. >> >> See the section 2.1 http://wiki.apache.org/cassandra/GettingStarted >> >> >> On Tue, Aug 13, 2013 at 8:28 AM, Naresh Yadav <nyadav....@gmail.com>wrote: >> >>> >>> Thanks Alain, will avoid caps....i am newbie to cassandra, just started >>> using 2 weeks back.. >>> >>> Here are JConsole screenshots just 5mins after cassandra freezed : >>> >>> http://i.imgur.com/3oUBjKU.png >>> http://i.imgur.com/2O4PrKb.png >>> http://i.imgur.com/zxhFzr1.png 4:05 is time cassandra >>> freezed thats why decline in no of threads >>> http://i.imgur.com/ScgAciv.png >>> Uploaded complete system.log of cassandra till freeze : >>> http://www.scribd.com/doc/159949231/Cassandrasystem-log >>> >>> Observation : As in my usecase i am storing 1lakh >>> combinations(527insert,506update,954select) each parallel by 100 threads in >>> batch of 1000... >>> Sometimes it works till 1000 batch then hangs but sometimes it completes >>> 10000 then hangs and once even worked for more than lakh.... >>> Same hardware Same settings of cassandra i see random behaviour of >>> performance.. >>> >>> Thanks >>> Naresh >>> >>> >>> On Tue, Aug 13, 2013 at 3:48 PM, Alain RODRIGUEZ <arodr...@gmail.com>wrote: >>> >>>> Hi Naresh. >>>> >>>> First thing, there is no need of caps in here. People reading this ML >>>> is here to help when they have time and skills enough to do so. So please, >>>> chill out and do not use caps to show how much desperate you are. >>>> >>>> Concerning your problem, the only abnormal thing I was able to find in >>>> your logs is >>>> >>>> >>>> 1. ERROR [NonPeriodicTasks:1] 2013-08-13 01:52:42,106 >>>> SSTableDeletingTask.java (line 72) Unable to delete >>>> >>>> \var\lib\cassandra\data\system\schema_columnfamilies\system-schema_columnfamilies-ic-241-Data.db >>>> (it will be removed on server restart; we'll also retry after GC) >>>> >>>> >>>> I don't think this should keep C* hanging. >>>> >>>> Do you have something on kernel logs ? >>>> >>>> Do you have monitor any metrics like disk throughput / heap used / cpu >>>> load / iowait which are known as being bottlenecks / pertinent metrics ? >>>> >>>> Alain >>>> >>>> >>>> 2013/8/13 Naresh Yadav <nyadav....@gmail.com> >>>> >>>>> >>>>> Hi All, >>>>> >>>>> I have single node cassandra using CQL using datastax java driver >>>>> 1.0.1 and cassandra verison 1.2.6. >>>>> >>>>> *Infrastructure :* 16GB machine with 8GB heap given to cassandra, i7 >>>>> processor.. DEFAULT cassandra.yaml no change done by me. >>>>> -Xms1G^ >>>>> -Xmx12G^ no other change in cassandra.bat >>>>> >>>>> *Problem : >>>>> _________ >>>>> *cassandra Freezes after some writes and i see no action on >>>>> cassandra console for an hour...all Native_Transport threads are also >>>>> killed....my program keeps running NO ERROR comes.......when i connect >>>>> with >>>>> cql that works........ In start it creates 16 NativeTransport threads and >>>>> after 10-15 minutes Total threads goes to 128...Just before it hangs, With >>>>> JCONSOLE when i see Native_Transport threads then i find most of them in >>>>> state as : >>>>> >>>>> http://pastebin.com/DeShpHtP >>>>> >>>>> *Load on cassandra : * >>>>> ___________________ >>>>> i am running a usecase which stores Combinations(my project >>>>> terminology) in cassandra....Currently testing storing 2.5 lakh >>>>> combinations with 100 parallel threads..each thread storing one >>>>> combination...real case i need to support of many CRORES but that would >>>>> need different hardware and multi node cluster... >>>>> >>>>> In Storing ONE combination takes around 2sec and involves : >>>>> >>>>> 527 INSERT INTO queries .... >>>>> >>>>> 506 UPDATE queries .... >>>>> >>>>> 954 SELECT queries .... >>>>> >>>>> 100 parallel threads parallely storing 100 combinations.... >>>>> *MY CASSANDRA LOGS :* >>>>> >>>>> http://pastebin.com/CnNvA9x3 >>>>> >>>>> Please look last 100-200 lines of log because that is time it freezed >>>>> >>>>> >>>>> PLEASE HELP ME OUT, I AM NOT ABLE TO PROCEED FROM 1 week... >>>>> >>>> >>>> >>> >>> >>> >> > > >
