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sql: add SHOW TRANSFER STATE observer statement #76127

Merged
merged 1 commit into from
Feb 19, 2022
Merged

sql: add SHOW TRANSFER STATE observer statement #76127

merged 1 commit into from
Feb 19, 2022

Commits on Feb 19, 2022

  1. sql: add SHOW TRANSFER STATE observer statement 

    Informs cockroachdb#76000.

This commit adds the SHOW TRANSFER STATE observer statement, as described in
the sqlproxy connection migration RFC. This observer statement will be used
whenever a connection is about to be migrated to retrieve the relevant values
needed for the transfer process. A unique aspect to this statement is that
serialization or token generation errors will be returned as a SQL value
instead of an ErrorResponse. This will allow the sqlproxy to react accordingly,
and to reduce ambiguity issues during transferring.

This observer statement will only work on tenants (due to the need of token
generation). Since this is meant to be used internally only, there is no
release note.

Release note: None

Co-authored-by: Jay <jay@cockroachlabs.com>
Co-authored-by: Rafi Shamim <rafi@cockroachlabs.com>
    @jaylim-crl @rafiss
    jaylim-crl and rafiss committed Feb 19, 2022
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