23 Jan
2020
23 Jan
'20
8:40 p.m.
+ bumping up
Any suggestions/thoughts on this issue ?
Regards,
Biswajeet
On Tue, Nov 26, 2019 at 11:28 AM Biswajeet Patra <
biswajeet.patra(a)flipkart.com> wrote:
Hi All,
I have a query regarding objecter behaviour for homeless session. In
situations when all OSDs containing copies (*let say replication 3*) of
an object are down, the objecter assigns a homeless session (OSD=-1) to a
client request. This request makes radosgw thread hang indefinitely as the
data could never be served because all required OSDs are down. With
multiple similar requests, all the radosgw threads gets exhausted and
hanged indefinitely waiting for the OSDs to come up. This creates complete
service unavailability as no rgw threads are present to process valid
requests which could have been directed towards active PGs/OSDs.
I think we should have behaviour in objecter or radosgw to terminate
request and return early in case of a homeless session. Let me know your
thoughts on this.
Regards,
Biswajeet
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