vtgate: add VEXPLAIN MYSQLPLAN statement - #20817

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ejortegau wants to merge 41 commits into

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ejortegau:ejortegau/vexplain-mysqlplan

Commits on Aug 10, 2026

vtgate: add VEXPLAIN MYSQLPLAN statement

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b6e5aac
vtgate: make VEXPLAIN MYSQLPLAN support check an allowlist

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6b9a248
vtgate: test VEXPLAIN MYSQLPLAN rejects INSERT ... SELECT

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40aa115
vtgate: mirror no-route fallback in VEXPLAIN MYSQLPLAN

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6a70115
changelog: document VEXPLAIN MYSQLPLAN baseline-plan limitation

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2faefeb
vtgate: bind __upper_limit before EXPLAIN for pushed-down scatter limits

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12cabf9
vtgate: support explicitly targeted Send plans in VEXPLAIN MYSQLPLAN

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42c6562

Commits on Aug 11, 2026

vtadmin: route VEXPLAIN MYSQLPLAN through VExplain result conversion

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c83065a

Commits on Aug 12, 2026

vtgate: reject VEXPLAIN MYSQLPLAN in reserved-connection sessions

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1e0da3f
vtgate: reject sequence next-value queries in VEXPLAIN MYSQLPLAN

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c55ccbf
vtgate: bound VEXPLAIN MYSQLPLAN fanout and account for its shard queries

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cc71f06

Commits on Aug 13, 2026

vtgate: copy bind vars per input when collecting MYSQLPLAN tasks

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5026e1d
changelog: document VEXPLAIN MYSQLPLAN per-shard EXPLAIN failure behavior

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b56aad1
vtgate: unify VEXPLAIN plan-description walkers

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46513b3
vtgate: count only successfully-explained shards in MYSQLPLAN accounting

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dd306e7
Merge remote-tracking branch 'upstream/main' into ejortegau/vexplain-mysqlplan
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878891b

Commits on Aug 14, 2026

test/e2e: add unsharded keyspace for VEXPLAIN MYSQLPLAN reserved-conn test

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b811b48

Commits on Aug 17, 2026

vtgate: reject nested query blocks in VEXPLAIN MYSQLPLAN at plan time

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cf692e6
vtgate: reject VEXPLAIN MYSQLPLAN sequence queries before bypass planning

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b8593e6
vtgate: count completed shards when a MYSQLPLAN EXPLAIN fails

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0b6608e

Commits on Aug 18, 2026

vtgate: count every attempted shard in MYSQLPLAN accounting

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f8fc5c1
vtgate: reject VEXPLAIN MYSQLPLAN advisory lock functions

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5ef7ad2

Commits on Aug 19, 2026

vtgate: don't pin a VEXPLAIN MYSQLPLAN session for a SET_VAR-only sysvar

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bc3d25b
vtgate: reject VEXPLAIN MYSQLPLAN of SQL_CALC_FOUND_ROWS with GROUP BY/HAVING

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2b9f32f
docs: note VEXPLAIN MYSQLPLAN does not table-ACL-check per-shard EXPLAINs

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0355407
vtgate: give VEXPLAIN MYSQLPLAN derived-table/view rejection an honest message

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e52ccf9
vtgate: make MYSQLPLAN shard-query accounting an optional VCursor capability

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04dbb37

Commits on Aug 20, 2026

vtgate: run VEXPLAIN MYSQLPLAN EXPLAINs through the shared scatter path

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bdca6b0
vtgate: drop dead MergeSort entry from VEXPLAIN MYSQLPLAN allowlist

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6cdbdda
test/e2e: probe MySQL version from the sharded keyspace by name

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ce2eef5
test/e2e: cover VEXPLAIN MYSQLPLAN scatter fan-out across shards

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421d6f3
vtgate: rename MYSQLPLAN output key to mysql_explain_json_by_shard

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afb986f
vtgate: fold VEXPLAIN MYSQLPLAN AST checks into one walk

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5880984
vtgate: reject VEXPLAIN MYSQLPLAN DML by statement type

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ac3f349
vtgate: move mysqlExplainTask into the top type() block

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e5cd381
vtgate: warn when a MYSQLPLAN shard returns an empty EXPLAIN result

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44077e6
changelog: note VEXPLAIN MYSQLPLAN in-transaction reads pre-tx state

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eaee2cc
test/e2e: assert VEXPLAIN MYSQLPLAN of INTO OUTFILE/DUMPFILE has no side effect

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aa5d20d

Commits on Aug 21, 2026

changelog: clarify VEXPLAIN MYSQLPLAN concurrency is per-shard, not per-route

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a332f0b
vtgate: give lock/sequence rejection priority in VEXPLAIN MYSQLPLAN AST walk

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fa74d13
changelog: note table-scoped query denylist rules also bypass MYSQLPLAN EXPLAINs

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a4c5304