[+] switch to VirtualXID from TransactionXID, solves #674
#675
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Turned out issuing `txid_current()` at the beginning of every chain transaction is creating a session that's sits idle in transaction for the duration of the entire chain. In current case, with a single task `{kind == PROGRAM}`, that idle transaction doesn't do anything aside from pin the `xmin` horizon and block vacuum for 6+ hours. The same issue occurs for SQL tasks that are `Remote` or `Autonomous`.
pashagolub
changed the title
VirtualXID internally from TransactionXID, solves #674VirtualXID from TransactionXID, solves #674
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Turned out issuing
txid_current()at the beginning of every chain transaction is creating a session that's sits idle in transaction for the duration of the entire chain. In current case, with a single task{kind == PROGRAM}, that idle transaction doesn't do anything aside from pin thexminhorizon and block vacuum for 6+ hours. The same issue occurs for SQL tasks that areRemoteorAutonomous.