Hi Amit.
PSA the v16 patch for the Tablesync Solution1.
Main differences from v15:
+ Tablesync cleanups of DropSubscription/AlterSubscription_refresh are
re-implemented as as ProcessInterrupts function
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Features:
* The tablesync slot is now permanent instead of temporary.
* The tablesync slot name is no longer tied to the Subscription slot name.
* The tablesync worker is now allowing multiple tx instead of single tx
* A new state (SUBREL_STATE_FINISHEDCOPY) is persisted after a
successful copy_table in tablesync's LogicalRepSyncTableStart.
* If a re-launched tablesync finds state SUBREL_STATE_FINISHEDCOPY
then it will bypass the initial copy_table phase.
* Now tablesync sets up replication origin tracking in
LogicalRepSyncTableStart (similar as done for the apply worker). The
origin is advanced when first created.
* Cleanup of tablesync resources:
- The tablesync slot cleanup (drop) code is added for
process_syncing_tables_for_sync functions.
- The tablesync replication origin tracking is cleaned
process_syncing_tables_for_apply.
- A tablesync function to cleanup its own slot/origin is called from
ProcessInterrupt. This is indirectly invoked by
DropSubscription/AlterSubscrition when they signal the tablesync
worker to stop.
* Updates to PG docs.
TODO / Known Issues:
* Race condition observed in "make check" may be related to this patch.
* Add test cases.
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Please also see some test scenario logging which shows the new
tablesync cleanup function getting called as results of
Drop/AlterSUbscription.
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Kind Regards,
Peter Smith.
Fujitsu Australia
