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This commit carries changes to Innodb for the user XA's binlog-coordinated
ordered commit. It's the part III of the series aimed at
improving on parallel slave performance and providing crash-recovery.
As the part I has unified binlog coordinated completion (commit and
rollback) of the XA transactions with the normal ones a remained
task is to optimize flush to disk call away from the XA completion execution
in engine like it's done to the normal transaction.
Namely innobase_{rollback,commit}_by_xid()^\footnote{Unlike the normal
transaction case, XA-rollback also needs a similar addressing} now
raise a flag blocking the flush before innobase_commit_low().
The flag is restored upon that, which of course what the normal
transaction does in its execution path past the low-commit.
Tests demonstrate the changes are effectual, e.g
binlog_xa_prepared_disconnect.test " failed ", to require it to
adapted to possible loss of the commit/rollback upon crash.
Binlog recovery in such scenarios is going to be recovered in the part
IV of MDEV-33168. The feasibility of successful recovery of
XA-"COMPLETE" is based on a plain observation, that in order to decide
whether to commit an XA or not it's sufficient to follow
the normal transaction recovery rule: when xid is found in binlog
the transaction gets completed (committed in the normal transaction case).
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| .. | ||
| archive | ||
| atomic | ||
| binlog | ||
| binlog_encryption | ||
| client | ||
| compat | ||
| csv | ||
| encryption | ||
| engines | ||
| events | ||
| federated | ||
| funcs_1 | ||
| funcs_2 | ||
| galera | ||
| galera_3nodes | ||
| galera_3nodes_sr | ||
| galera_sr | ||
| gcol | ||
| handler | ||
| heap | ||
| innodb | ||
| innodb_fts | ||
| innodb_gis | ||
| innodb_i_s | ||
| innodb_zip | ||
| jp | ||
| json | ||
| large_tests | ||
| maria | ||
| mariabackup | ||
| merge | ||
| mtr/t | ||
| mtr2 | ||
| multi_source | ||
| optimizer_unfixed_bugs | ||
| parts | ||
| perfschema | ||
| perfschema_stress | ||
| period | ||
| plugins | ||
| roles | ||
| rpl | ||
| s3 | ||
| sql_sequence | ||
| storage_engine | ||
| stress | ||
| sys_vars | ||
| sysschema | ||
| unit | ||
| vcol | ||
| versioning | ||
| wsrep | ||