Copy protocol 22 - #1
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1) Change the sl_log_N tables adding columns for the table schema and name; Add a special column for update actions, containing the number of updated columns for the SET clause; Change log_cmddata into log_cmdargs of type text[]. This includes a check script in the ./tools directory that can be used to verify that a cluster is completely caught up as well as the changes to upgradeSchema() to change the sl_log_N format during a Slony version upgrade. This worked for a 2.0 -> 2.2 upgrade. Still needs documentation of the upgrade procedure. 2) Adjust the log triggers to produce the new log format. 3) Remove the slon remote_worker code that updates the replicated user tables. The above changes broke that part anyway and this allows for an apply trigger to take over the work of applying data changes. extra) Added a PL/pgSQL implementation of the apply trigger. This results in a fully functional slony system again and acts as a proof of concept.
…nto copy-protocol-22 Conflicts: RELEASE
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Note, patch 7510458 resolves the problem that running UPDATE FUNCTIONS fails due to trying to add apply_trigger a second time. |
case it's missing.
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FYI, here's some cleanups that amount to opening up development on v2.2.
It includes a draft of release notes that includes our discussion of ~2 weeks ago about what needs to happen at upgrade time from 2.[^2] to 2.2.