Jiajun Yao

Handle starting worker throttling inside worker pool

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Signed-off-by: Jiajun Yao ## Why are these changes needed? Currently, worker pool has throttling of how many workers can be started simultaneously (i.e. `maximum_startup_concurrency_`). Right now if a PopWorker call...

[Core] Placement group creation hangs when create pgs in parallel

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### What happened + What you expected to happen When we try to create multiple placement groups competing for the same resources, it will hang. ### Versions / Dependencies master...

[Core] Document the behavior that people can use VISIBLE_CUDA_DEVICES to control the GPUs a node can use

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### Description See https://github.com/ray-project/ray/issues/27739 ### Link _No response_

Prototype scheduling cluster

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## Why are these changes needed? - Piggyback onto the pg implementation (i.e. using custom resources) - Syntax to specify the initial resources of the cluster - Policy to use...

## Why are these changes needed? This test passed for both gcs based actor scheduling and raylet based actor scheduling. ## Related issue number ## Checks - [ ] I've...

## Why are these changes needed? GcsNodeInfo already contains total resources so there is no need to make a AsyncGetResources rpc call to get it. ## Related issue number ##...

[Doc] Clarify that session can also mean a ray cluster

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## Why are these changes needed? Clarify in the glossary that session can also mean a ray cluster ## Related issue number Closes #35093 ## Checks - [ ] I've...

## Why are these changes needed? Add some basic instructions on how to size the head node ## Related issue number Closes #25410 ## Checks - [ ] I've signed...

## Why are these changes needed? ## Related issue number Closes #40925 ## Checks - [ ] I've signed off every commit(by using the -s flag, i.e., `git commit -s`)...

TypeError: 'separators' is an invalid keyword argument for ujson.dumps

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I use ujson 1.3.0 but it's dumps function doesn't have 'separators' keyword argument.