Add prev transaction ID attribute to history node table for events chaining #1435
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* New prev_txn_id within histroy node table tracking previous valid history node record * New validation logic trimming stale history node record in case DB is not consist
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alexshtin
approved these changes
Apr 6, 2021
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What changed?
Why?
Chaining events provides an ability for Temporal server to trim history events, during DB inconsistency.
How did you test it?
UT & Manual tests
Next PR will add ability to validate and trim stale events.
Potential risks
N/A
Is hotfix candidate?
No