Re: Kubernetes operator: config for taskmanager.memory.process.size ignored

2023-06-14 Thread Robin Cassan via user
process memory. >>> >>> So basically the spec is a config shorthand, there is no reason to >>> override it as you won't get a different behaviour at the end of the day. >>> >>> Gyula >>> >>> On Wed, Jun 14, 2023 at 11:55 AM Robin Cas

Re: Kubernetes operator: config for taskmanager.memory.process.size ignored

2023-06-14 Thread Robin Cassan via user
t; > So basically the spec is a config shorthand, there is no reason to > override it as you won't get a different behaviour at the end of the day. > > Gyula > > On Wed, Jun 14, 2023 at 11:55 AM Robin Cassan via user < > user@flink.apache.org> wrote: > >> He

Kubernetes operator: config for taskmanager.memory.process.size ignored

2023-06-14 Thread Robin Cassan via user
Hello all! I am using the flink kubernetes operator and I would like to set the value for `taskmanager.memory.process.size`. I set the desired value in the flinkdeployment resource specs (here, I want 55gb), however it looks like the value that is effectively passed to the taskmanager is the same

Re: Reduce checkpoint-induced latency by tuning the amount of resource available for checkpoints

2022-12-19 Thread Robin Cassan via user
elp to make incremental checkpoint size small and >>> stable which could make the CPU more stable. >>> >>> [1] https://issues.apache.org/jira/browse/FLINK-28699 >>> [2] >>> https://nightlies.apache.org/flink/flink-docs-release-1.16/docs/dev/datastream/fault

Re: Reduce checkpoint-induced latency by tuning the amount of resource available for checkpoints

2022-12-19 Thread Robin Cassan via user
ttps://issues.apache.org/jira/browse/FLINK-28699 > [2] > https://nightlies.apache.org/flink/flink-docs-release-1.16/docs/dev/datastream/fault-tolerance/checkpointing/#state-backend-incremental > [3] > https://nightlies.apache.org/flink/flink-docs-release-1.16/docs/deployment/config

Reduce checkpoint-induced latency by tuning the amount of resource available for checkpoints

2022-12-15 Thread Robin Cassan via user
Hello all! We are trying to bring our flink job closer to real-time processing and currently our main issue is latency that happens during checkpoints. Our job uses RocksDB with periodic checkpoints, which are a few hundred GBs every 15 minutes. We are trying to reduce the checkpointing duration b

Re: Limiting backpressure during checkpoints

2022-10-24 Thread Robin Cassan via user
ps. > > In long term, I think we probably need to separate the compaction process > from the internal db and control/schedule the compaction process ourselves > (compaction takes a good amount of CPU and reduces TPS). > > Best. > Yuan > > > > On Thu, Oct 13, 2022 at 11

Limiting backpressure during checkpoints

2022-10-13 Thread Robin Cassan via user
Hello all, hope you're well :) We are attempting to build a Flink job with minimal and stable latency (as much as possible) that consumes data from Kafka. Currently our main limitation happens when our job checkpoints the RocksDB state: backpressure is applied on the stream, causing latency. I am w

Re: New licensing for Akka

2022-09-07 Thread Robin Cassan via user
Thanks a lot for your answers, this is reassuring! Cheers Le mer. 7 sept. 2022 à 13:12, Chesnay Schepler a écrit : > Just to squash concerns, we will make sure this license change will not > affect Flink users in any way. > > On 07/09/2022 11:14, Robin Cassan via user wrote: > &

New licensing for Akka

2022-09-07 Thread Robin Cassan via user
Hi all! It seems Akka have announced a licensing change https://www.lightbend.com/blog/why-we-are-changing-the-license-for-akka If I understand correctly, this could end-up increasing cost a lot for companies using Flink in production. Do you know if the Flink developers have any initial reaction a

Re: Ignoring state's offset when restoring checkpoints

2022-07-11 Thread Robin Cassan via user
Thanks a lot Alexander and Tzu-Li for your answers, this helps a lot!! Cheers, Robin Le ven. 8 juil. 2022 à 17:40, Tzu-Li (Gordon) Tai a écrit : > Hi Robin, > > Apart from what Alexander suggested, I think you could also try the > following first: > Let the job use a "new" Kafka source, which y

Ignoring state's offset when restoring checkpoints

2022-07-08 Thread Robin Cassan via user
Hello all! We have a need where, for specific recovery cases, we would need to manually reset our Flink kafka consumer offset to a given date but have the Flink job restore its state. As I understand, restoring from a checkpoint necessarily sets the group's offset to the one that was in the checkp