问题
I'm using apache cassandra-3.0.6 ,4 node cluster, RF=3, CONSISTENCY is '1', Heap 16GB.
Im getting info message in system.log as "INFO [SharedPool-Worker-1] 2017-03-14 20:47:14,929 NoSpamLogger.java:91 - Maximum memory usage reached (536870912 bytes), cannot allocate chunk of 1048576 bytes"
don't know exactly which memory it mean and I have tried by increasing the file_cache_size_in_mb to 1024 from 512 in Cassandra.yaml file But again it immediatly filled the remaining 512MB increased and stoping the application recording by showing the same info message as "INFO [SharedPool-Worker-5] 2017-03-16 06:01:27,034 NoSpamLogger.java:91 - Maximum memory usage reached (1073741824 bytes), cannot allocate chunk of 1048576 bytes"
please suggest if anyone has faced the same issue..Thanks!!
Bhargav
回答1:
As far as I can tell with Cassandra 3.11, no matter how large you set file_cache_size_in_mb, you will still get this message. The cache fills up, and writes this useless message. It happens in my case whether I set it to 2GB or 20GB. This may be a bug in the cache eviction strategy, but I can't tell.
来源：https://stackoverflow.com/questions/42826686/in-cassandra-maximum-memory-usage-reached-536870912-bytes-cannot-allocate-chu