Thanks Akhil for response. I have set memtable_allocation_type as Off-heap. But cassandra 2.1.x does not allow to set *memtable_heap_space_in_mb: 0.*
It mentions , we need to assign some positive value to heap space. In such case, will memtable still use jvm heap space. Can anyone suggest below parameters. memtable_flush_writers: memtable_cleanup_threshold: PS : We have high write intensive workload . 5Node cluster (12 Core , 62GB RAM and flash disk per node) Regards, Varun Saluja On 23 May 2017 at 03:26, Akhil Mehra <akhilme...@gmail.com> wrote: > I believe off-heap storage was reintroduced in 3.4 ( > https://issues.apache.org/jira/browse/CASSANDRA-9472). It was removed > from 3.0 due to the refactoring of the storage engine. Check out > http://www.datastax.com/dev/blog/off-heap-memtables-in-Cassandra-2-1 to > get an overview of the pros and cons of using off-heap storage. > > Regards, > Akhil Mehra > > > On Tue, May 23, 2017 at 12:32 AM, varun saluja <saluj...@gmail.com> wrote: > >> Hi Experts, >> >> I have some concerns regarding memtable parameters for my current >> version. 2.1.8. >> >> As per documentation , its mentioned to have Off-heap memtables in >> Cassandra 2.1 . And in releases 3.2.0 and 3.2.1, the only option that works >> is: heap-buffers. >> Can you Please suggest what value should be use for below paramteres in >> 2.1.x >> memtable_allocation_type : >> >> Regards, >> Varun Saluja >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org >> For additional commands, e-mail: user-h...@cassandra.apache.org >> >> >
