Too many cop worker goroutines cause TiDB OOM #41134
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affects-6.5
This bug affects the 6.5.x(LTS) versions.
severity/moderate
type/bug
The issue is confirmed as a bug.
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Feb 7, 2023
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Feb 13, 2023
* statistics: fix data race in the Handle.IsTableLocked (pingcap#40572) close pingcap#40567 * executor,store/copr: trace the buildCopTask and limitExec close duration when it's slow (pingcap#40579) ref pingcap#40441 * planner: prepared plan cache support cached plan with placeholder in limit clause (pingcap#40196) ref pingcap#40219 * planner: refactor to put all plan-cacheability-check functions together (pingcap#40625) ref pingcap#36598 * testkit: reset the resource manager after test finishes (pingcap#40638) * planner: disable plan-cache for plans with IndexMerge accessing Multi-Valued Index (pingcap#40646) ref pingcap#40191 * test: add more foreign key test (pingcap#40650) close pingcap#40649 * ddl: Block change column on partitioned table if data needs change. (pingcap#40631) close pingcap#40620 * planner: show un-cacheable reasons for execute statements (pingcap#40651) ref pingcap#36598 * ddl: cancel `create view` job , when failed to drop old view (pingcap#40353) close pingcap#40352 * domain: use enhanced waitGroupWrapper in domain pingcap#40606 (pingcap#40626) ref pingcap#40330 * privilege,planner/core: add dynamic privilege RESOURCE_GROUP_ADMIN for resource group operation (pingcap#40632) ref pingcap#38825 * *: add a new I_S table and support show create for resource groups (pingcap#40665) close pingcap#39781 * meta: add lock at autoid.(*allocator).Base() (pingcap#40588) close pingcap#40584 * *: Support learner replica read (pingcap#39979) close pingcap#40449 * Revert "planner: show un-cacheable reasons for execute statements" (pingcap#40680) ref pingcap#36598 * executor: fix buildTableReaderForIndexJoin on partition table (pingcap#40674) close pingcap#40596 * util: remove empty folder (pingcap#40681) * domain: let background process unify wg.Run (pingcap#40640) * BR: add lock with ttl for checkpoint backup (pingcap#40563) close pingcap#40561 * *: LOAD DATA support load one file from s3 and other OSS (pingcap#40489) ref pingcap#40499 * ttl: execute scan tasks (pingcap#40564) close pingcap#40364 * ddl: fix the batch check for unique index (pingcap#40672) ref pingcap#40464, close pingcap#40592 * resourcemanager: avoid to get nil after task finished when to stop task (pingcap#40699) close pingcap#40700 * planner: refactor plan cache value code (pingcap#40656) ref pingcap#40219 * telemetry: resource control telemetry (pingcap#40687) ref pingcap#38825 * planner: set binary collation for mv column (pingcap#40644) close pingcap#40558 * ddl: add some tests for flashback cluster with ddl history (pingcap#40695) ref pingcap#40026 * pitr: move step iterate backup files into worker pool (pingcap#40577) close pingcap#40576 * ddl, lightning: support detecting duplicate keys in different batch (pingcap#40701) close pingcap#40698 * json, expression: add json unary not implementation (pingcap#40723) close pingcap#40683 * ddl: prevent dropping in-use resource group (pingcap#40716) ref pingcap#38825 * store/copr: move row hint into key range (pingcap#40105) ref pingcap#39361 * server, privileges: make tidb_auth_session_token compatible with password expiration and resource group (pingcap#40735) ref pingcap#40614 * mockstore: update pd/client and client-go to repair kvproto compatibility (pingcap#40597) close pingcap#40598 * Explain : Add new item in TiFlashScanContext to record region num information (pingcap#40666) ref pingcap#39273 * *: Setup Global Resource Controller (pingcap#40732) close pingcap#40731 * tests: enable race and flaky for flashback test (pingcap#40752) * br: split regions before pitr restore (pingcap#39941) close pingcap#37207 * log-backup: do not resolve locks frequently when log-backup task did not exist (pingcap#40760) ref pingcap#40759 * lint: update config of deprecated linter (pingcap#40763) ref pingcap#40786 * lightning: check hasDupe and tableID when resolve duplicate rows (pingcap#40696) close pingcap#40657 * planner: skip the plan cache if non-int values are converted into int when optimization (pingcap#40686) close pingcap#40679 * *: Remove unused binary that was accidentally added (pingcap#40782) close pingcap#40781 * linter: add skywalking-eyes into bazel (pingcap#40788) close pingcap#40789 * planner: remove pickFromBucket field in LRUPlanCache (pingcap#40668) ref pingcap#36598 * statistics: move statsReader out of statistics/handle (pingcap#40790) ref pingcap#40624, ref pingcap#40791 * linter: find inappropriate key in call to context.WithValue (pingcap#40769) close pingcap#40796 * ttl: notify tidb nodes through etcd notification (pingcap#40705) close pingcap#40365 * executor: add foreign key and session variable test (pingcap#40785) close pingcap#40784 * ttl: add table `mysql.ttl_job_history` to store ttl job histories (pingcap#40655) close pingcap#40654 * planner: forbid the optimizer to generate point-plan upon MVIndexes (pingcap#40804) ref pingcap#40191 * planner: refactor some code related to IndexMerge and MVIndex (pingcap#40800) ref pingcap#40191 * ddl: remove useless code (pingcap#40756) close pingcap#40755 * ttl: use a standalone manager in TriggerScanTask test (pingcap#40816) close pingcap#40811 * ddl: split some tests into new package (pingcap#40758) ref pingcap#40802 * resourcemanager: scheduler subtask in the pool's task (pingcap#40670) close pingcap#40719 * bazel: upgrade rules_go to prepare for Go 1.20 (pingcap#40776) close pingcap#40798 * store/copr: add a param "limit" to region cache's `SplitRegionRanges` (pingcap#40411) close pingcap#38436 * br: fix checkpoint panic when BR executes gain (pingcap#40706) close pingcap#40704 * sessionctx: add validation for tidb_enable_plan_replayer_continues_capture (pingcap#40787) * planner: show warnings when analyzing multi-valued indexes (pingcap#40827) ref pingcap#40191 * ddl: move update version function to a proper place (pingcap#40817) ref pingcap#40217 * lightning: support timeout for tikv/tidb retry (pingcap#40805) ref pingcap#33714 * ttl: support telemetry for TTL (pingcap#40806) close pingcap#40519 * ttl: auto delete old rows in `mysql.tidb_ttl_job_history` (pingcap#40808) close pingcap#40807 * lightning: support data files with bom header (pingcap#40813) close pingcap#40744 * planner: support `use / force index` for multi-valued indexes (pingcap#40820) ref pingcap#40191 * lightning/parser: support STARTING BY (pingcap#40821) ref pingcap#40499 * planner: add a switch control if prepare stmt with param limit can be cached (pingcap#40712) ref pingcap#40219 * metrics: add goroutine schedule latency to grafana panel (pingcap#40836) close pingcap#40835 * server: support getting the MVCC of the temporary index (pingcap#40830) close pingcap#40826 * planner: let optimizer trace support gcSubstitute (pingcap#40815) close pingcap#40662 * planner: add more test cases for MVIndex (pingcap#40853) ref pingcap#40191 * planner: supply test cases for binding from history (pingcap#40864) ref pingcap#39199 * ddl: unsupport flashback cluster cross `alter table attributes` (pingcap#40862) close pingcap#40861 * bindInfo: fix datarace on bindings (pingcap#40846) close pingcap#40843 * executor: add historical stats test and make it enabled (pingcap#40664) * Variables: enhance tidb_enable_gc_tuner (pingcap#40850) close pingcap#40849 * ttl: add metrics for task manager (pingcap#40819) close pingcap#40810 * lightning: enable setting conflict max-error (pingcap#40874) ref pingcap#40743 * DDL: Skip collecting TiFlash status when TiFlash is down (pingcap#40872) close pingcap#38484 * server: Return error when no password is specified for caching_sha2_password account with password (pingcap#40858) close pingcap#40831 * br: fix br debug encode panic (pingcap#40880) close pingcap#40878 * planner: fix HashAgg cannot pushdown to tiflash_compute (pingcap#40828) close pingcap#40717 * parser: Fix for field name output in multi statements (pingcap#40736) close pingcap#39662 * expression, cmd: fix ColumnSubstitute and allow some cases to substitute (pingcap#38826) close pingcap#38736, close pingcap#40536 * planner: forbid using IndexFullScan on multi-valued indexes (pingcap#40907) ref pingcap#40191 * lightning: local backend support keyspace (pingcap#40628) ref pingcap#40531 * README: refine the Forum infomation format in community section (pingcap#40924) * ttl: don't fetch ttl scan task after it finished (pingcap#40919) close pingcap#40918 * executor: Fix tidb crash on index merge reader (pingcap#40904) close pingcap#40877 * util: add InTest to check whether to be in test (pingcap#40927) close pingcap#40929 * *: upgrade mgechev/revive (pingcap#40920) * ddl: fix create exists resource group (pingcap#40837) ref pingcap#38825 * handle: support fallback for dump historical stats (pingcap#40889) close pingcap#40890 * admin: support cleanup multi-valued index (pingcap#40428) close pingcap#40427 * *: support MockAutoScaler and AWSAutoScaler (pingcap#40729) close pingcap#40747 * session: fix bad log (pingcap#40948) close pingcap#40947 * planner: fix dropping non-ScalarFunction when extractCol for memtable (pingcap#40935) close pingcap#40937 * planner: supply test cases for param limit in plan cache (pingcap#40868) ref pingcap#40219 * br: disable foreign key check when br create table (pingcap#40951) close pingcap#40952 * planner: rename keep_order hint to order_index hint for mysql compatibility (pingcap#40945) * planner: report the warning when use the hint but the SQL has the binding (pingcap#40949) close pingcap#40910 * *: add ci image (pingcap#40866) close pingcap#40867 * metrics: introduce the resource control RU Grafana dashboard (pingcap#40922) ref pingcap#38825 * planner: add MppVersion for mpp task; support data compression in Exchange Operator; (pingcap#40132) ref pingcap/tiflash#6620, close pingcap#40494 * *: unify wru,rru to ru (pingcap#40884) close pingcap#40883 * br: adaption for keyspace feature (pingcap#40532) ref pingcap#40531 * resourcemange: fix delete more workers than expected (pingcap#40894) close pingcap#40893 * keyspace: gc delete range (pingcap#40639) ref pingcap#40848 * ddl: add more tests about multi-valued index (pingcap#40973) * test: stabilize TestAddIndexMergeConflictWithPessimistic (pingcap#40975) close pingcap#40939 * *: add UseAutoScaler config to disable AutoScaler (pingcap#40966) close pingcap#40971 * *: add memory tracker for mppIterator (pingcap#40901) close pingcap#40900 * resource_group: supports burstable for resource group (pingcap#40925) close pingcap#40380 * util: fix memory leak in chunk allocator (pingcap#40989) close pingcap#40987 * ddl, statistics: fix stats meta missing when creating many tables at once (pingcap#38301) close pingcap#36004, close pingcap#38189 * statistics: move TableStatsFromStorage out of handle (pingcap#40822) ref pingcap#40624, ref pingcap#40791 * br: remove totalFlashbackRegions since task completion region already contains all regions (pingcap#40504) close pingcap#40391, ref pingcap#41005 * lightning: fix panic when nextKey twice (pingcap#40959) close pingcap#40934 * ttl: fix data race in TTL manager and test (pingcap#40976) close pingcap#40944 * session: use `mDDLTableVersion` key to control backfill tables (pingcap#40984) close pingcap#40980 * planner: not allow the optimizer to use `json_contains(j, '[]')` as access conditions on MVIndex (pingcap#41013) ref pingcap#40191 * ddl/ingest: add mutex to disk root (pingcap#41029) close pingcap#40970 * ttl: avoid endless loop in TTL task schedule (pingcap#41020) close pingcap#41019 * resourcemanager: fix TaskController.Stop() can't make producer exit in spmcpool (pingcap#41016) close pingcap#41015 * *: add buildtag for ddltest (pingcap#41027) * statistics: use histogram count rather than realtime count to calculate stats healthy (pingcap#41031) * pd_client: update client and global config (pingcap#40955) ref pingcap#38825 * ddl: show more jobs in the tidb_mdl_view (pingcap#40860) close pingcap#40838 * *: add resource group name into information_schema.processlist (pingcap#40739) close pingcap#40724 * *: upgrade golangci-linter (pingcap#41046) * executor: fix IndexMerge handle panic logic (pingcap#41036) close pingcap#41047 * ttl: fix TTL will delete unexpected rows when timezone changed (pingcap#41044) close pingcap#41043 * *: fix the sysvar value may be corrupted after set by subquery (pingcap#41003) close pingcap#40979 * ddl, parser: implement the normal flow of distributed processing in DDL reorg phase for adding index (pingcap#40542) close pingcap#37125 * session, metrics: refine the resource control metrics (pingcap#41045) ref pingcap#38825 * meta: fix remove resource group (pingcap#40968) ref pingcap#38825 * metrics/grafana: add cpu/memory of pd in overview panel (pingcap#41072) close pingcap#41071 * lightning: precheck should check CDC changefeeed rather than capture (pingcap#41076) close pingcap#41040 * ttl: fix ttl job manager will panic if the status cache doesn't contain table (pingcap#41069) close pingcap#41067, close pingcap#41068 * sessionctx: fix hidden and user var problems in encoding session states (pingcap#40754) close pingcap#40614 * Revert "planner: skip the plan cache if non-int values are converted into int when optimization" (pingcap#41077) ref pingcap#41032 * schema cache: cache schema version by timestamp (pingcap#40768) close pingcap#40740 * executor: fix plan replayer dump for tpcds q97 (pingcap#41088) close pingcap#41064 * *: update util/tracing and remove repeated code (pingcap#40825) close pingcap#40809 * telemetry: Log error reason for failure to get SQL Metric (pingcap#40778) close pingcap#40777 * br: add retry for prepare flashback for backup cluster is empty and there are only one region (pingcap#41059) close pingcap#41058 * server: Implement column defaults for `mysql.ComFieldList` (pingcap#40765) close pingcap#40764 * resourcemanager: avoid to schedule when no task is in the pool (pingcap#41095) close pingcap#41094 * *: Update github.com/cloudfoundry/gosigar (pingcap#41111) close pingcap#41110 * ddl: remove useless error log (pingcap#41107) close pingcap#41106 * executor: use const varialbe for index merge handleWorkerPanic (pingcap#41066) close pingcap#41065 * Optimizer: add test cases for predicate simplifications (pingcap#41117) ref pingcap#40221 * executor: disable paging for small limit (pingcap#41120) close pingcap#40741 * flashback: retry `getStoreGlobalMinSafeTS` during execute flashback (pingcap#41100) close pingcap#41086 * metrics: add tidb_rm_pool_concurrency (pingcap#41113) close pingcap#41114 * handler: fix duplicated log of unanalyzed table for historical stats (pingcap#41129) * *: update client-go and pd client (pingcap#41124) close pingcap#41123 * admin: fix recover expression cause index broken (pingcap#41092) ref pingcap#40430, close pingcap#41087 * statistics/handle: remove unnecessary h.mu.Lock (pingcap#41153) * parser: move LOAD DATA REMOTE into LOAD DATA (pingcap#41091) ref pingcap#40499 * planner: support more pattern for index join inner side (pingcap#40999) ref pingcap#40505 * planner: support more pattern for index join inner side (pingcap#40999) ref pingcap#40505 * planner: support more pattern for index join inner side (pingcap#40999) ref pingcap#40505 * makefile: update dumpling build options (pingcap#41165) * statistics/handle: refine the condition of dumping stats delta (pingcap#41133) ref pingcap#36004, ref pingcap#38189, ref pingcap#39785 * *: use the latest independent resource group manager client (pingcap#41162) ref pingcap#38825 * store/copr: set upper limit for extra concurrency (pingcap#41135) close pingcap#41134 * planner: label plans as over-optimized for plan cache after refining cmp-function arguments (pingcap#41136) close pingcap#40679, close pingcap#41032 * planner: when pushing `topN` down below `proj`, check whether `topN.ByItems` contains a column(with ID=0) generated by `proj` (pingcap#40593) close pingcap#40535 * *: update bazel config (pingcap#41127) close pingcap#41160 * br: fix br ci (pingcap#41149) * *: fix a timezone data race which may cause wrong row data (pingcap#41146) close pingcap#40710 * ddl: disable raw mode resource group (pingcap#41050) close pingcap#41049 * flashback: make `br backup full` works during `flashback cluster` (pingcap#40950) close pingcap#40404 * placement: supports survival preferences (pingcap#40613) close pingcap#38605 * log-backup: added more robust error handling for log backup advancer (pingcap#41083) close pingcap#41082 * lightning: access aws resource by session token (pingcap#40753) close pingcap#40750 * lightning: introduce param to skip CSV header parsing (pingcap#41128) close pingcap#40839 * ddl: forbid tiflash while enabling API v2 (pingcap#41167) ref pingcap#41166 * store/copr: enable store batch by default & add extra copr concurrency and batch nums in stats (pingcap#40711) ref pingcap#39361, close pingcap#40399 * *: remove ru token in resource group schema and set brust limit (pingcap#41174) ref pingcap#38825 * ReplicaReadMode: introduce new replica_read mode `PreferLeader`. (pingcap#40906) close pingcap#40905 * txn: Fix the issue that analyze panics when aggressive locking is enabled globally (pingcap#41196) close pingcap#41194 * pitr: prevent from restore point to cluster running log backup (pingcap#40871) ref pingcap#40797 * lightning: do resolve conflict job when other lightning has local dupes (pingcap#41157) close pingcap#40923 * executor: track the memroy usage in HashJoin probe phase (pingcap#41081) close pingcap#40500 * *: support recover multi-valued index (pingcap#41181) close pingcap#41180 * stmtsummary: add persistence implementation (pingcap#40814) ref pingcap#40812 * br: Support backup replica read (pingcap#40899) ref pingcap#40898 * store/copr: add log for buildBatchCopTasksConsistentHash (pingcap#41101) close pingcap#41102 * lightning: support compression when sending kv pairs to tikv (pingcap#41164) close pingcap#41163 * planner: skip plan cache if the plan contains Shuffle operators (pingcap#41185) close pingcap#38335 * expression: implement least/greatest for string function pushdown (pingcap#41188) close pingcap#41189 * go.mod: update client-go to the latest version (pingcap#41212) ref pingcap#38825 * add metrics for TTL (pingcap#41155) Signed-off-by: YangKeao <[email protected]> Co-authored-by: Ti Chi Robot <[email protected]> Co-authored-by: 王超 <[email protected]> * metrics: Add metrics and telemetry for aggressive locking (pingcap#41038) close pingcap#41037 * planner: adjust estimated row count when pushing `Limit` and keep order for partitioned table (pingcap#41103) close pingcap#40986 * planner: fix can't find proper physical plan caused by virtual column (pingcap#41132) close pingcap#41014 * planner: fix space requirement when binding from history (pingcap#41140) close pingcap#41126 * ddl: initialize the mock session in advanced (pingcap#41227) close pingcap#40879 * ddl: fix data race on job.SetWarnings (pingcap#41231) close pingcap#40751 * *: remove limit (pingcap#41242) * *: remove limit Signed-off-by: Weizhen Wang <[email protected]> * *: remove limit Signed-off-by: Weizhen Wang <[email protected]> * *: remove limit Signed-off-by: Weizhen Wang <[email protected]> --------- Signed-off-by: Weizhen Wang <[email protected]> * br: skip template system table __TiDB_BR_Temporary_mysql when backup (pingcap#41000) close pingcap#40797 * ddl, model: support for dist-reorg on partitioned tables (pingcap#41145) close pingcap#41144 * session: fix processInfo time when using driver to prepare and execute query (pingcap#41151) close pingcap#41057 * dumpling: fix cannot dump data bug when dumpling fails to check has tikv (pingcap#40977) close pingcap#40932 * lightning: fix panic when user cancel (pingcap#41236) close pingcap#41235 * util/gpool/spmc: add a sleep to a simple `for` (pingcap#41240) close pingcap#41205 * planner: fix calculating TiFlash stream count (pingcap#41221) ref pingcap#40123 * ddl: check the key existence on original index (pingcap#40749) close pingcap#40730 * types: use `mathutil.Max/mathutil.Min` instead of `myMax/myMin` (pingcap#41192) * bazel: set --test_keep_going false (pingcap#41247) * ddl: Add telementry for distributed reorg tasks. (pingcap#41201) ref pingcap#41266 * ddl: Improve ErrTooLongKey message (pingcap#41270) Prefix indexes are specified in characters while this error message returns a limit in bytes. By adding the byte length in the message this is makes it easier to understand. This would deviate a little bit from the message in MySQL. Before: ``` sql> CREATE TABLE t1(id int primary key, c1 text, key(c1(1000))); ERROR: 1071 (42000): Specified key was too long; max key length is 3072 bytes ``` After: ``` sql> CREATE TABLE t1(id int primary key, c1 text, key(c1(1000))); ERROR: 1071 (42000): Specified key was too long (4000 bytes); max key length is 3072 bytes ``` * ddl: fix owner get panic info with dist-reorg (pingcap#41217) close pingcap#41208 * planner: recover table/schema only needs create and drop privilege (pingcap#41226) close pingcap#40633 * Lightning: use **** to represent secret key in unit test (pingcap#41269) close pingcap#41268 * ddl: improve backfill more general (pingcap#41093) close pingcap#41002 * executor: fix unreasonable CPU time in HashJoin probe phash (pingcap#41265) close pingcap#41263 * ttl: optimize bazel for TTL codes (pingcap#41278) close pingcap#41276 * executor: support plan replayer capture remove task (pingcap#41258) close pingcap#41262 * expression: return upper bound for enum (pingcap#41021) close pingcap#40855 * lightning: revert db timeout changes for analyze (pingcap#41012) close pingcap#40941 * *: REORGANIZE PARTITION (pingcap#38535) (pingcap#41096) close pingcap#38535 * br: fix backup ci (pingcap#41295) ref pingcap#40404, ref pingcap#40898 * *: reduce the allocation of error constructing in `DecodeTableID` (pingcap#41301) close pingcap#41300 * util: fix dropped error (pingcap#41254) * metric: seperate the internal and external transaction metrics (pingcap#41206) ref pingcap#41203 * planner: fix a bug when pushing streamAgg down (pingcap#41056) close pingcap#40857 * build(deps): bump golang.org/x/oauth2 from 0.3.0 to 0.5.0 (pingcap#41283) * Optimizer: derive TopN from filter on row number (pingcap#41209) ref pingcap#39792 * domain: fix data race in the ttlJobManager (pingcap#41289) close pingcap#41288 * stmtsummary: fix data race in test (pingcap#41287) close pingcap#41275 * ddl: return panic when to get tiflash sync progress failed in test (pingcap#41292) close pingcap#39949 * infoschema: fix is.partitions.partition_expression for range columns (pingcap#41285) close pingcap#40931 * sysvar: introduce variable tidb_enable_inl_join_inner_multi_pattern (pingcap#41319) ref pingcap#40505 * executore: fix logic error in HashJoin probe (pingcap#41320) * *: update bazel config (pingcap#41296) * infoschema: fix unstable test TestSelectClusterTable (pingcap#41321) close pingcap#41307 * log-backup: added cache for sst_importer client (pingcap#41305) close pingcap#41328 * stmtsummary: fix panic in stmts test (pingcap#41334) close pingcap#41315 * *: fix goleak in the test (pingcap#41339) close pingcap#41274 * planner: fix tiflash cannot find generated column (pingcap#41261) close pingcap#40663 * server, execute: set text for execute command (pingcap#41340) close pingcap#41156 * br: increase the sleep time in the `waitForSend` function (pingcap#41322) close pingcap#41210 * cgroup: improve test to find cgroup compatibility issues (pingcap#41347) close pingcap#39786 --------- Signed-off-by: YangKeao <[email protected]> Signed-off-by: Weizhen Wang <[email protected]> Co-authored-by: Weizhen Wang <[email protected]> Co-authored-by: tiancaiamao <[email protected]> Co-authored-by: fzzf678 <[email protected]> Co-authored-by: Yuanjia Zhang <[email protected]> Co-authored-by: crazycs <[email protected]> Co-authored-by: Mattias Jonsson <[email protected]> Co-authored-by: zzm <[email protected]> Co-authored-by: Song Gao <[email protected]> Co-authored-by: BornChanger <[email protected]> Co-authored-by: Jk Xu <[email protected]> Co-authored-by: Yang Zhang <[email protected]> Co-authored-by: Jianjun Liao <[email protected]> Co-authored-by: lance6716 <[email protected]> Co-authored-by: YangKeao <[email protected]> Co-authored-by: tangenta <[email protected]> Co-authored-by: xiongjiwei <[email protected]> Co-authored-by: Hangjie Mo <[email protected]> Co-authored-by: you06 <[email protected]> Co-authored-by: djshow832 <[email protected]> Co-authored-by: Hu# <[email protected]> Co-authored-by: hongyunyan <[email protected]> Co-authored-by: ShuNing <[email protected]> Co-authored-by: Zak Zhao <[email protected]> Co-authored-by: Yujie Xia <[email protected]> Co-authored-by: Yifan Xu <[email protected]> Co-authored-by: 王超 <[email protected]> Co-authored-by: Lynn <[email protected]> Co-authored-by: Chunzhu Li <[email protected]> Co-authored-by: dsdashun <[email protected]> Co-authored-by: TonsnakeLin <[email protected]> Co-authored-by: wjHuang <[email protected]> Co-authored-by: hehechen <[email protected]> Co-authored-by: Daniël van Eeden <[email protected]> Co-authored-by: MoCuishle28 <[email protected]> Co-authored-by: guo-shaoge <[email protected]> Co-authored-by: iosmanthus <[email protected]> Co-authored-by: winkyao <[email protected]> Co-authored-by: xufei <[email protected]> Co-authored-by: glorv <[email protected]> Co-authored-by: Zhenchi <[email protected]> Co-authored-by: Chengpeng Yan <[email protected]> Co-authored-by: JmPotato <[email protected]> Co-authored-by: Zhigao Tong <[email protected]> Co-authored-by: ystaticy <[email protected]> Co-authored-by: Shenghui Wu <[email protected]> Co-authored-by: fengou1 <[email protected]> Co-authored-by: Chen Ding <[email protected]> Co-authored-by: ghazalfamilyusa <[email protected]> Co-authored-by: disksing <[email protected]> Co-authored-by: 山岚 <[email protected]> Co-authored-by: okJiang <[email protected]> Co-authored-by: Yongbo Jiang <[email protected]> Co-authored-by: Lucas <[email protected]> Co-authored-by: MyonKeminta <[email protected]> Co-authored-by: Yexiang Zhang <[email protected]> Co-authored-by: yanweiqi <[email protected]> Co-authored-by: Ti Chi Robot <[email protected]> Co-authored-by: Zhou Kunqin <[email protected]> Co-authored-by: Arenatlx <[email protected]> Co-authored-by: Benjamin2037 <[email protected]> Co-authored-by: Lars Lehtonen <[email protected]> Co-authored-by: cfzjywxk <[email protected]> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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I handled a workload, in which cop client spawned too many extra concurrency workers. It might needs an upper of concurrency.
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3. What did you see instead (Required)
4. What is your TiDB version? (Required)
v6.5
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