I am using Cassandra 0.7.0 with following settings binary_memtable_throughput_in_mb: 64 in_memory_compaction_limit_in_mb: 64 keys_cached 1 million rows_cached 0
RAM for Cassandra 2 GB I run very simple test 1 Node with 4 HDDs (1 HDD - commitlog and caches, 3 HDDs - data) 1 KS => 1 CF => 1 Column I insert data (random key 64 bytes + value 64 bytes) at a maximum possible speed, trying to hit disk i/o, calculate speed and make sure Cassandra stays alive. It doesn't, unfortunately. After several hundreds millions of inserts Cassandra always does down by OOM. Getting it up again doesn't help - after inserting some new data it goes down again. By this time Cassandra goes to swap and has a lot of tasks pending. I am not inserting anything now and tasks sloooowly disappear, but it will take her weeks to do all of them. compaction type: Minor column family: Standard1 bytes compacted: 3661003227 bytes total in progress: 4176296448 pending tasks: 630 So, what am I (or Cassandra) doing wrong ? I dont want to get Cassandra crashed without means of repair on heavy load circumstances.
