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Rate limiter for BackupableDB

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Summary: Might be useful if client doesn't want to effect running system during backup too much.

Test Plan: added a test case

Reviewers: dhruba, haobo, ljin

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17091
This commit is contained in:
Igor Canadi
2014-03-24 11:38:44 -07:00
parent 83ab62e2bb
commit b253f24403
3 changed files with 142 additions and 18 deletions
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18
include/utilities/backupable_db.h
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@@ -61,6 +61,16 @@ struct BackupableDBOptions {
// Default: true
bool backup_log_files;
// Max bytes that can be transferred in a second during backup.
// If 0, go as fast as you can
// Default: 0
uint64_t backup_rate_limit;
// Max bytes that can be transferred in a second during restore.
// If 0, go as fast as you can
// Default: 0
uint64_t restore_rate_limit;
void Dump(Logger* logger) const;
explicit BackupableDBOptions(const std::string& _backup_dir,
@@ -68,14 +78,18 @@ struct BackupableDBOptions {
bool _share_table_files = true,
Logger* _info_log = nullptr, bool _sync = true,
bool _destroy_old_data = false,
bool _backup_log_files = true)
bool _backup_log_files = true,
uint64_t _backup_rate_limit = 0,
uint64_t _restore_rate_limit = 0)
: backup_dir(_backup_dir),
backup_env(_backup_env),
share_table_files(_share_table_files),
info_log(_info_log),
sync(_sync),
destroy_old_data(_destroy_old_data),
backup_log_files(_backup_log_files) {}
backup_log_files(_backup_log_files),
backup_rate_limit(_backup_rate_limit),
restore_rate_limit(_restore_rate_limit) {}
};
struct RestoreOptions {