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...
