Hi, I'll duplicate here my email with the same issue
"/I have 7 nodes of C* v2.2.5 running on CentOS 7 and using jemalloc for
dynamic storage allocation.
Use only one keyspace and one table with Leveled compaction strategy.
I've loaded ~500 GB of data into the cluster with replication factor
equals to 3 and waiting until compaction is finished. But during
compaction each of the C* nodes allocates all the available memory
(~128GB) and just stops its process.
This is a known bug ? /"
On 03/13/2016 12:56 AM, Mohamed Lrhazi wrote:
Hello,
We installed Datastax community edition, on 8 nodes, RHEL7. We
inserted some 7 billion rows into a pretty simple table. the inserts
seem to have completed without issues. but ever since, we find that
the nodes reliably run out of RAM after few hours, without any user
activity at all. No reads nor write are sent at all. What should we
look for to try and identify root cause?
[root@avesterra-prod-1 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.2 (Maipo)
[root@avesterra-prod-1 ~]# rpm -qa| grep datastax
datastax-ddc-3.2.1-1.noarch
datastax-ddc-tools-3.2.1-1.noarch
[root@avesterra-prod-1 ~]#
The nodes had 8 GB RAM, which we doubled twice and now are trying with
40GB... they still manage to consume it all and cause oom_killer to
kick in.
Pretty much all the settings are the default ones the installation
created.
Thanks,
Mohamed.
--
Thanks,
Serj
