Skip to content

[core] Migrate remaining std::unordered_map to absl::flat_hash_map #59921

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
edoakes merged 4 commits into from
Jan 7, 2026
Merged

[core] Migrate remaining std::unordered_map to absl::flat_hash_map #59921

Show file tree
Hide file tree
Changes from 2 commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
dffe32a
[core] Replace std::unordered_map with absl::flat_hash_map
Vito-Yang Jan 7, 2026
c65e0d7
Merge branch 'ray-project:master' into migrate-unordered-map-to-flat-…
Vito-Yang Jan 7, 2026
ad9de4f
[core] remove unused #include <unordered_map>
Vito-Yang Jan 7, 2026
b459645
Merge branch 'migrate-unordered-map-to-flat-hash' of github.com:Vito-…
Vito-Yang Jan 7, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/ray/core_worker/core_worker.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1850,7 +1850,7 @@ class CoreWorker {
absl::flat_hash_set<TaskID> canceled_tasks_ ABSL_GUARDED_BY(mutex_);

/// Key value pairs to be displayed on Web UI.
std::unordered_map<std::string, std::string> webui_display_ ABSL_GUARDED_BY(mutex_);
absl::flat_hash_map<std::string, std::string> webui_display_ ABSL_GUARDED_BY(mutex_);

/// Actor repr name if overrides by the user, empty string if not.
std::string actor_repr_name_ ABSL_GUARDED_BY(mutex_);
Expand Down
5 changes: 3 additions & 2 deletions src/ray/core_worker/experimental_mutable_object_provider.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
#include <unordered_map>
#include <vector>

#include "absl/container/flat_hash_map.h"
#include "ray/common/asio/instrumented_io_context.h"
#include "ray/core_worker/experimental_mutable_object_manager.h"
#include "ray/raylet_rpc_client/raylet_client_interface.h"
Expand Down Expand Up @@ -215,7 +216,7 @@ class MutableObjectProvider : public MutableObjectProviderInterface {
// Maps the remote node object ID (i.e., the object ID that the remote node writes to)
// to the corresponding local object ID (i.e., the object ID that the local node reads
// from) and the number of readers.
std::unordered_map<ObjectID, LocalReaderInfo> remote_writer_object_to_local_reader_
absl::flat_hash_map<ObjectID, LocalReaderInfo> remote_writer_object_to_local_reader_
ABSL_GUARDED_BY(remote_writer_object_to_local_reader_lock_);

// Creates a Raylet client for each mutable object. When the polling thread detects a
Expand Down Expand Up @@ -244,7 +245,7 @@ class MutableObjectProvider : public MutableObjectProviderInterface {
// For objects larger than the gRPC max payload size *that this node receives from a
// writer node*, this map tracks how many bytes have been received so far for a single
// object write.
std::unordered_map<ObjectID, uint64_t> written_so_far_
absl::flat_hash_map<ObjectID, uint64_t> written_so_far_
ABSL_GUARDED_BY(written_so_far_lock_);

friend class MutableObjectProvider_MutableObjectBufferReadRelease_Test;
Expand Down