Hi folks,
Mimic cluster here, RGW pool with only default zone. I have a
persistent error here
LARGE_OMAP_OBJECTS 1 large omap objects
1 large objects found in pool 'default.rgw.log'
Search the cluster log for 'Large omap object found' for more
details.
I think I've narrowed it down to this namespace:
-[~:#]- rados -p default.rgw.log --namespace usage ls
usage.17
usage.19
usage.24
-[~:#]- rados -p default.rgw.log --namespace usage listomapkeys usage.17
| wc -l
21284
-[~:#]- rados -p default.rgw.log --namespace usage listomapkeys usage.19
| wc -l
1355968
-[~:#]- rados -p default.rgw.log --namespace usage listomapkeys usage.24
| wc -l
0
Now, this last one take a long time to return -- minutes, even with a 0
response, and listomapvals indeed returns a very large amount of data.
I'm doing `wc -c` on listomapvals but this hasn't returned at the time
of writing this message. Is there anything I can do about this?
Whenever PGs on the default.rgw.log are recovering or backfilling, my
RGW cluster appears to block writes for almost two hours, and I think it
points to this object, or at least this pool.
I've been having trouble finding any documentation about how this log
pool is used by RGW. I have a feeling updating this object happens on
every write to the cluster. How would I remove this bottleneck? Can I?
Thanks
-Troy
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
