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* feat: query mem limiter * feat: config docs * feat: frontend query limit config * fix: unused imports Signed-off-by: jeremyhi <fengjiachun@gmail.com> * feat: add metrics for query memory tracker Signed-off-by: jeremyhi <fengjiachun@gmail.com> * fix: right postion for tracker Signed-off-by: jeremyhi <fengjiachun@gmail.com> * fix: avoid race condition Signed-off-by: jeremyhi <fengjiachun@gmail.com> * feat: soft and hard limit Signed-off-by: jeremyhi <fengjiachun@gmail.com> * feat: docs Signed-off-by: jeremyhi <fengjiachun@gmail.com> * fix: when soft_limit == 0 Signed-off-by: jeremyhi <fengjiachun@gmail.com> * feat: upgrade limit algorithm Signed-off-by: jeremyhi <fengjiachun@gmail.com> * fix: remove batch window Signed-off-by: jeremyhi <fengjiachun@gmail.com> * chore: batch mem size Signed-off-by: jeremyhi <fengjiachun@gmail.com> * feat: refine limit algorithm Signed-off-by: jeremyhi <fengjiachun@gmail.com> * fix: get sys mem Signed-off-by: jeremyhi <fengjiachun@gmail.com> * chore: minor change * feat: up tracker to the top stream * feat: estimated_size for batch Signed-off-by: jeremyhi <fengjiachun@gmail.com> * chore: minor refactor * feat: scan_memory_limit connect to max_concurrent_queries Signed-off-by: jeremyhi <fengjiachun@gmail.com> * chore: make callback clearly * feat: add unlimted enum Signed-off-by: jeremyhi <fengjiachun@gmail.com> * chore: by review comment * chore: comment on recursion_limit Signed-off-by: jeremyhi <fengjiachun@gmail.com> * feat: refactor and put permit into RegionScanExec Signed-off-by: jeremyhi <fengjiachun@gmail.com> * chore: multiple lazy static blocks * chore: minor change Signed-off-by: jeremyhi <fengjiachun@gmail.com> --------- Signed-off-by: jeremyhi <fengjiachun@gmail.com>