> Follower reader feature is used in production environment with a bit of customization.
Weiming/Weiming/Jianghua, That is great! Could you submit a pull request for https://issues.apache.org/jira/browse/HDDS-9279 ? Thank you in advance. Tsz-Wo On Mon, Oct 28, 2024 at 9:15 AM Wei-Chiu Chuang <weic...@apache.org> wrote: > ZGC in JDK17 is stable. According to the various reports, ZGC achieves > better throughput, latency than G1. > If someone in the community would like to give it a try, I know some HBase > community members opted in ZGC for HBase and it turned out better than > other choices. > > We don't support JDK21 yet. But JDK21 has a new ZGC mode > > > https://medium.com/@roopa.kushtagi/netflixs-journey-from-g1gc-to-zgc-tackling-tail-latencies-66ee75681d49 > > > https://kstefanj.github.io/2023/12/13/jdk-21-the-gcs-keep-getting-better.html > > On Sun, Oct 27, 2024 at 8:50 PM Sammi Chen <sammic...@apache.org> wrote: > > > Attenders: Hao, Weiming, Conway, Jianghua, Sammi > > > > Sammi：The new OM HA prototype shows times of improvement of OM > throughput. > > Weiming/Weiming/Jianghua: > > - Follower reader feature is used in production environment with a bit of > > customization. > > - Tencent Kona JDK 17 is used with G1 GC to replace the Open JDK 17 on > OM, > > which welly solve the OM GC problem triggered by threadLocal usage. > > GuoHao: > > - Found EC pipeline creation lock contention which causes P99 latency > > higher than expected, when there is intensive block allocation requests. > > Will investigate a) EC pipeline pre-allocation pool, and b) code refactor > > to reduce the lock scope, two solutions next. > > - Proposed a key deleting service optimization, instead of iterating from > > first key of the table, save last key of last iterator as the start key > of > > next iterator, to skip the tombstones of already deleted record. > > - Found one issue that the block delete request exceeds the SCM raft log > > max message size when there are big MPU files involved. Should control > the > > block delete request size under the SCM raft log max message size. > > >
