lwsa-leonardosouza commented on issue #13224:
URL: https://github.com/apache/cloudstack/issues/13224#issuecomment-5147419417
We are hitting the same problem, and I think I can add the missing piece —
the exact error @abh1sar asked about and the root cause.
Root cause: BucketUsageTask throws an NPE on empty buckets, which aborts the
whole run
On our environment the hourly BucketUsageTask fails with this exception on
every run:
ERROR [o.a.c.s.o.B.BucketUsageTask] (Bucket-Usage-1) Error while fetching
bucket usage
com.cloud.utils.exception.CloudRuntimeException: Cannot invoke
"org.twonote.rgwadmin4j.model.BucketInfo$Usage$RgwMain.getSize_kb()"
because the return value of
"org.twonote.rgwadmin4j.model.BucketInfo$Usage.getRgwMain()" is null
The trigger is an empty bucket (0 objects). RGW only includes rgw.main in
usage once a bucket has objects; for an empty bucket radosgw-admin bucket stats
returns an empty usage ({}), so getUsage().getRgwMain() is null and
.getSize_kb() throws. Because the exception propagates out of the task, the
whole run aborts — every bucket iterated after the first empty one never gets
its size updated and stays at size = 0. This also explains @jeanvetorello's
note that "bucket usage records are also never generated". Buckets before the
empty one are fine; the empty one and everything after are skipped. Suggested
fix: null-check getRgwMain() (treat missing rgw.main as 0) and/or try/catch per
bucket, in CephObjectStoreDriverImpl.java. Workaround: remove/populate empty
buckets so every bucket has rgw.main.
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