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IB, SQL: (0.4) COMMIT_ID-based ordering of transactions

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IB:
* removed CONCURR_TRX from VTQ;
* new fields in VTQ: COMMIT_ID, ISO_LEVEL.

SQL:
* renamed BEGIN_TS, COMMIT_TS to VTQ_BEGIN_TS, VTQ_COMMIT_TS;
* new functions: VTQ_COMMIT_ID, VTQ_ISO_LEVEL, VTQ_TRX_ID, VTQ_TRX_SEES, VTQ_TRX_SEES_EQ;
* versioned SELECT for IB uses VTQ_TRX_SEES, VTQ_TRX_SEES_EQ.

Closes #71
This commit is contained in:
Aleksey Midenkov
2016-11-14 06:14:28 +00:00
parent 07cc46acea
commit d54d36c45e
35 changed files with 1247 additions and 352 deletions
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4
sql/handler.h
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@ -1391,7 +1391,9 @@ struct handlerton
System Versioning
*/
bool versioned() const;
bool (*vers_get_vtq_ts)(THD* thd, MYSQL_TIME *out, ulonglong trx_id, vtq_field_t field);
bool (*vers_query_trx_id)(THD* thd, void *out, ulonglong trx_id, vtq_field_t field);
bool (*vers_query_commit_ts)(THD* thd, void *out, const MYSQL_TIME &commit_ts, vtq_field_t field, bool backwards);
bool (*vers_trx_sees)(THD *thd, bool &result, ulonglong trx_id1, ulonglong trx_id0, ulonglong commit_id1, uchar iso_level1, ulonglong commit_id0);
};