Cassandra Out Of Memory (OOM) exceptions can cause performance impact and reduce availability. The OOM exception is reported when Cassandra is unable to allocate heap space. Some times the application workload alone can cause Cassandra to quickly use all the available heap space and throw OOM exceptions. Common cause for OOM is application workload combined with background jobs such as repair or Compactions can increase heap usage and eventually lead to OOM exceptions. Some of the component...
