Re: Error when set memtable_troughput with Cassandra-CLI

sorry, i dont understand, what right syntax to set memtable_throughput? >

Error when set memtable_troughput with Cassandra-CLI

Hi! Need set memtable_troughput for cassandra I try do this with help cassandra-cli by write this command "update column family columnfamily2 memtable_troughput=155;" but i get error "missing EOF at memtable_troughput" help! how i can set attribute memtable_troughput?

Re: Cassandra 0.7.8 and 0.8.1 fail when major compaction on 37GB database

Why when i give jvm 1 GB heap size and try launch cassandra with 37GB database, cassandra start loading database, but after memory usage full, they fall with OutOfMemory Exception. Cassandra can`t work with low memory? or she critical need more RAM if database grows? here is link to download cassnd

Re: Cassandra 0.7.8 and 0.8.1 fail when major compaction on 37GB database

I zip last version of cassandra with yaml file and 37gb database, can anybody download and do major compaction to check what is wrong? and why cassandra fall in outofmemory exception. Tanks! here is link to download http://213.186.117.181/apache-cassandra-0.8.2-bin.zip

Re: Cassandra 0.7.8 and 0.8.1 fail when major compaction on 37GB database

I have only one CF with one UTF8 column and without indexes. in column always 1 byte of data and keys is 16byte strings.

Re: Cassandra 0.7.8 and 0.8.1 fail when major compaction on 37GB database

I have only 4GB on server, so i give jvm 3 GB of heap, but this dont help, cassandra still fall when i launch major compaction on 37 GB database.

Re: Cassandra 0.7.8 and 0.8.1 fail when major compaction on 37GB database

>There are many things you can do to lower caches,optimize memtables, and tune jvms. Please tell what thins i can do to lower caches,optimize memtables, and tune jvms? >From experience with similar-sized data sets, 1.5GB may be too little. Recently I bumped our java HEAP limit from 3GB to 4GB t

Cassandra 0.7.8 and 0.8.1 fail when major compaction on 37GB database

Hi, Please help me with my problem. For better performance i turn off compaction and run massive inserts, after database reach 37GB i stop massive inserts and start compaction with "NodeTool compaction Keyspace CFamily". after half hour of work cassandra fall with error "Out of memory" i give 150

Re: cassandra fatal error when compaction

it happend again i turn off compaction by setting max and min compaction tresholds to zero, and run, 5 threads of inserts, after base reach 27GB size cassandra fall with same error. OS Windows Server 2008 datacenter, JVM have 1.5 GB heap. cassandra version 0.8.1 all parameters in conf file are defa

Re: cassandra fatal error when compaction

ERROR [pool-2-thread-3] 2011-07-22 10:34:59,102 Cassandra.java (line 3294) Internal error processing insert java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecu

cassandra fatal error when compaction

Why cassandra fall when i start comaction with nodetool on 35+gb database. all parameter are default. ERROR [pool-2-thread-1] 2011-07-21 15:25:36,622 Cassandra.java (line 3294) Internal error processing insert java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down

Compacting manual managing and optimization

Hi! Tell me please, how i can manage compacting process, turn them off and start manualy when i need. How i can improve performance of compacting process? Thanks!

cassandra massive write perfomance problem

Please help me solve one problem I have server with 4 GB RAM and 2x 4 cores CPU When i start do massive writes in cassandra all works fine. but after couple hours with 10K inserts per second database grows up to 25+ GB performance go down to 500 insert per seconds I find out this because compacting