Postgres-XC tutorial PDF - PGCon
Postgres-XC tutorial PDF - PGCon
Postgres-XC tutorial PDF - PGCon
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Transaction management<br />
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2PC is used to guarantee transactional consistency across nodes<br />
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When there are more than one nodes involved OR<br />
When there are explicit 2PC transactions<br />
Only those nodes where write activity has happened, participate in<br />
2PC<br />
In PostgreSQL 2PC can not be applied if temporary tables are<br />
involved. Same restriction applies in <strong>Postgres</strong><strong>XC</strong><br />
When single coordinator command needs multiple datanode<br />
commands, we encase those in transaction block<br />
May 16th, 2012 <strong>Postgres</strong><strong>XC</strong> 68
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