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Imporve sst_file_manager comment

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Summary: Improve the comment for sst_file_manager

Test Plan: none

Reviewers: yhchiang, sdong

Reviewed By: sdong

Subscribers: andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D56001
This commit is contained in:
Islam AbdelRahman 2016-03-29 13:20:26 -07:00
parent 99ffb3d533
commit e7c64fb115
1 changed files with 13 additions and 4 deletions
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17
include/rocksdb/options.h
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@ -837,10 +837,19 @@ struct DBOptions {
// Default: nullptr // Default: nullptr
std::shared_ptr<RateLimiter> rate_limiter; std::shared_ptr<RateLimiter> rate_limiter;
// Use to track SST files and control their file deletion rate, can be used // Use to track SST files and control their file deletion rate.
// among multiple RocksDB instances, sst_file_manager only track and throttle //
// deletes of SST files in first db_path (db_name if db_paths is empty), other // Features:
// files and other db_paths wont be tracked or affected by sst_file_manager. // - Throttle the deletion rate of the SST files.
// - Keep track the total size of all SST files.
// - Set a maximum allowed space limit for SST files that when reached
// the DB wont do any further flushes or compactions and will set the
// background error.
// - Can be shared between multiple dbs.
// Limitations:
// - Only track and throttle deletes of SST files in
// first db_path (db_name if db_paths is empty).
//
// Default: nullptr // Default: nullptr
std::shared_ptr<SstFileManager> sst_file_manager; std::shared_ptr<SstFileManager> sst_file_manager;