There is now a second update available for 2.9.0: https://github.com/basho/riak/tree/riak-2.9.0p2.
This patch, like the patch before, resolves a memory management issue in leveled, which this time could be triggered by sending many large objects in a short period of time. The underlying problem is described a bit further here https://github.com/martinsumner/leveled/issues/285, and is resolved by leveled working more sympathetically with the beam binary memory management. Switching to the patched version is not urgent unless you are using the leveled backend, and may send a large number of large objects in a burst. Updated packages are available (thanks to Nick Adams at TI Tokyo) - https://files.tiot.jp/riak/kv/2.9/2.9.0p2/ Thanks again to the testing team at the NHS Spine project, Aaron Gibbon (BJSS) and Ramen Sen, who discovered the problem. The issue was discovered in a handoff scenario where there were a tens of thousands of 2MB objects stored in a portion of the keyspace at the end of the handoff - which led to memory issues until either more PUTs were received (to force a persist to disk) or a restart occurred.. Regards On Sat, 25 May 2019 at 09:35, Martin Sumner <martin.sum...@adaptip.co.uk> wrote: > Unfortunately, Riak 2.9.0 was released with an issue whereby a race > condition in heavy-PUT scenarios (e.g. handoffs), could cause a leak of > file descriptors. > > The issue is described here - https://github.com/basho/riak_kv/issues/1699, > and the underlying issue here - > https://github.com/martinsumner/leveled/issues/278. > > There is a new patched version of the release available (2.9.0p1) at > https://github.com/basho/riak/tree/riak-2.9.0p1. This should be used in > preference to the original release of 2.9.0. > > Updated packages are available (thanks to Nick Adams at TI Tokyo) - > https://files.tiot.jp/riak/kv/2.9/2.9.0p1/ > > Thanks also to the testing team at the NHS Spine project, Aaron Gibbon > (BJSS) and Ramen Sen, who discovered the problem. > > Regards > > Martin > > > > >
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