New VReplication workflows cli UX. Allow reads/writes to be switched independently#7071

Merged

rohit-nayak-ps merged 26 commits intovitessio:masterfrom

planetscale:rn-switch-order

Jan 3, 2021

Commits on Dec 26, 2020

Initial commit for switching reads and writes independently
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Added tests for new sr/sw flows. Remove validations no longer applicable. Setup routing rules for new flow
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Initial commit of a state-machine based MoveTables workflow
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Minor fixes/cleanup
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MoveTablesv2: -v2 flag, Refactored tests/code. Added code for Workflow Progress, ReverseReads/Writes
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Test reverse flows, show copy progress
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Update wrangler table migration unit tests
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Removed state machine since it does not fit the use case, use SwitchTraffic/ReverseTraffic instead of SwitchWrites/SwitchReads, added Complete (similar to DropSources) and Abort (drop targets) comm…
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Add more validations, implement workflow state
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Add single step switch/reverse traffic test, get existing tests working
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Fix more tests
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Add tests for Complete/Abort, fix check for switched writes
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Fix state computation for reverse writes, add tests for states pre/post actions
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Common VReplicationWorkflow abstraction for both MoveTables and Reshard
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Mods for reshard v2 command, Tests for reshard flow
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Minor cleanup
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Minor cleanup, some comments
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Tests for switching cells partially, add rdonly tablets to test
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Unit tests for move tables and copy progress
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Add tests for reverse and abort
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Fix Start validation
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Filter out backquotes while checking if query is executed on a tablet: vtgate seems to be quoting some characters now
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Remove rdonly for CI and move V2 test to new test shard
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Revert local changes to local example script
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Commits on Dec 30, 2020

Improve test coverage, fix reshard test
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Commits on Jan 3, 2021

Fix debug flag
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