Description of problem:
A bug in unordered bucket listing causes it to scale poorly with the number of bucket shards N, issuing N^2 osd requests instead of N.
Version-Release number of selected component (if applicable):
On buckets with more than one shard.
Steps to Reproduce:
1. Configure radosgw with rgw_override_bucket_index_max_shards=8 and debug_ms=1, restart radosgw
2. Create a bucket with public access:
$ s3cmd mb s3://bucket --acl-public
3. List the bucket once with the 'allow-unordered' parameter:
$ curl http://[hostname:port]/bucket?allow-unordered=1
4. In the radosgw log, count the number of [call rgw.bucket_list] requests sent to osds:
$ grep --count 'call rgw.bucket_list' /path/to/radosgw.log
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.