Video: Cov ntaub ntawv tombstone yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hauv kev suav, " tombstone "los yog" cov ntaub ntawv tombstone ” yog cov ntaub ntawv deleted los yog deleted cov ntaub ntawv nyob rau hauv ib tug replica ntawm ib tug faib cov ntaub ntawv khw.
Kuj nug, cov ntaub ntawv tombstone yog dab tsi?
Cov tombstone yog a ntaub ntawv nrog cov ntaub ntawv ntxiv txog cov txheej txheem poob. Tshwj xeeb, nws muaj cov kab sib tw rau tag nrho cov xov hauv kev sib tsoo (tsis yog cov xov uas ntes tau lub teeb liab), daim ntawv qhia kev nco tag nrho, thiab cov npe ntawm txhua qhov qhib. ntaub ntawv tus piav.
Ib yam li ntawd, koj ua li cas tshem cov pob zeb tombstones hauv Cassandra? Txheej txheem
- Saib xyuas lub sijhawm sib pauv nruab nrab los ntsuas seb yuav tshem cov tombstones ntau npaum li cas.
- Nres txhua Cassandra node.
- Kho cov chaw hauv qab no hauv cassandra. yaml uas cuam tshuam rau tombstone tshem tawm thiab compaction: tombstone_threshold.
- Khiav cov txheej txheem reaper thiab compaction.
- Rov ua cov kauj ruam rau txhua qhov node.
- Rov pib dua txhua qhov node.
Ua raws li qhov no, dab tsi yog tombstones hauv Cassandra?
Hauv Cassandra , deleted cov ntaub ntawv yog tsis tam sim ntawd purged los ntawm lub disk. Hloov chaw, Cassandra sau tus nqi tshwj xeeb, hu ua a tombstone , los qhia tias cov ntaub ntawv tau raug tshem tawm. Tombstones tiv thaiv deleted cov ntaub ntawv los ntawm kev xa rov qab thaum nyeem, thiab nws thiaj li tso cai rau cov ntaub ntawv yuav tsum tau poob ntawm compaction.
Tombstone nyob rau hauv Active Directory yog dab tsi?
A tombstone yog ib yam khoom deleted ntawm lub phau ntawv , tab sis tseem tsis tau muab tshem tawm ntawm lub database. Lawv raug tshem tawm (lub cev raug tshem tawm) los ntawm cov txheej txheem sau cov khib nyiab thaum lawv laus dua tombstone lub neej.
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