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rocksdb/utilities/transactions
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Sarang Masti c4a19ed399 Add Transaction::CollapseKey to collapse merge op chains ondemand (#11815) 
Summary:
Application using rocksdb today dont have much control over the cost of reads when merge-ops are enabled, expect for waiting for compactions to kick in or using max_successive_merges hint, which only applies to memtable. This change adds Transaction::CollapseKey api giving applications the ability to request merge chain collapse on-demand, when they detect high read costs due to merges. Currently, this only supported on PessimisticTransactions.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11815

Test Plan: Add a unit test

Reviewed By: ajkr

Differential Revision: D49309387

Pulled By: sarangbh

fbshipit-source-id: a1eb5cc9e3bd4b3206a36150aacead770318e3e1
2023-09-15 10:25:57 -07:00
..
lock Add missing status check when compiling with ASSERT_STATUS_CHECKED=1 (#11686) 2023-08-09 15:46:44 -07:00
optimistic_transaction.cc Improve memory efficiency of many OptimisticTransactionDBs (#11439) 2023-05-24 11:57:15 -07:00
optimistic_transaction.h Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
optimistic_transaction_db_impl.cc Improve memory efficiency of many OptimisticTransactionDBs (#11439) 2023-05-24 11:57:15 -07:00
optimistic_transaction_db_impl.h Improve memory efficiency of many OptimisticTransactionDBs (#11439) 2023-05-24 11:57:15 -07:00
optimistic_transaction_test.cc Add missing status check when compiling with ASSERT_STATUS_CHECKED=1 (#11686) 2023-08-09 15:46:44 -07:00
pessimistic_transaction.cc Add Transaction::CollapseKey to collapse merge op chains ondemand (#11815) 2023-09-15 10:25:57 -07:00
pessimistic_transaction.h Add Transaction::CollapseKey to collapse merge op chains ondemand (#11815) 2023-09-15 10:25:57 -07:00
pessimistic_transaction_db.cc Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
pessimistic_transaction_db.h Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
snapshot_checker.cc Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
timestamped_snapshot_test.cc Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
transaction_base.cc Set default cf ts sz for a reused transaction (#11685) 2023-08-09 13:49:42 -07:00
transaction_base.h Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00
transaction_db_mutex_impl.cc Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
transaction_db_mutex_impl.h Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
transaction_test.cc Add Transaction::CollapseKey to collapse merge op chains ondemand (#11815) 2023-09-15 10:25:57 -07:00
transaction_test.h Add Transaction::CollapseKey to collapse merge op chains ondemand (#11815) 2023-09-15 10:25:57 -07:00
transaction_util.cc Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
transaction_util.h Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
write_committed_transaction_ts_test.cc Set default cf ts sz for a reused transaction (#11685) 2023-08-09 13:49:42 -07:00
write_prepared_transaction_test.cc Add missing status check when compiling with ASSERT_STATUS_CHECKED=1 (#11686) 2023-08-09 15:46:44 -07:00
write_prepared_txn.cc Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00
write_prepared_txn.h Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00
write_prepared_txn_db.cc Track full_history_ts_low per SuperVersion (#11784) 2023-09-13 16:34:18 -07:00
write_prepared_txn_db.h Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00
write_unprepared_transaction_test.cc Refactor WriteUnpreparedStressTest to be a unit test (#11424) 2023-05-22 12:31:52 -07:00
write_unprepared_txn.cc Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00
write_unprepared_txn.h Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00
write_unprepared_txn_db.cc Track full_history_ts_low per SuperVersion (#11784) 2023-09-13 16:34:18 -07:00
write_unprepared_txn_db.h Group rocksdb.sst.read.micros stat by different user read IOActivity + misc (#11444) 2023-08-08 17:26:50 -07:00