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dm/load: fix concurrent call Loader.Status #3459

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merged 4 commits into from
Nov 16, 2021

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@lance6716 lance6716 commented Nov 15, 2021

What problem does this PR solve?

close #3457
close https://github.com/pingcap/ticdc/issues/3252

What is changed and how it works?

Loader.Status is invoked by RPC, so we should not assume it's not concurrent

Check List

Tests

  • Unit test

Code changes

Side effects

Related changes

  • Need to cherry-pick to the release branch

Release note

Fix a bug when too often query status is called in Load unit, DM-worker may encounter data race or panic

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ti-chi-bot commented Nov 15, 2021

[REVIEW NOTIFICATION]

This pull request has been approved by:

  • Ehco1996

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@ti-chi-bot ti-chi-bot added release-note Denotes a PR that will be considered when it comes time to generate release notes. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Nov 15, 2021
@lance6716 lance6716 added area/dm Issues or PRs related to DM. needs-cherry-pick-release-5.3 Should cherry pick this PR to release-5.3 branch. and removed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Nov 15, 2021
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GMHDBJD commented Nov 15, 2021

Maybe this pr also fix this issue https://github.com/pingcap/ticdc/issues/3252

@ti-chi-bot ti-chi-bot added the size/M Denotes a PR that changes 30-99 lines, ignoring generated files. label Nov 15, 2021
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/hold

@ti-chi-bot ti-chi-bot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Nov 15, 2021
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/run-all-tests
/unhold

@ti-chi-bot ti-chi-bot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Nov 15, 2021
@@ -441,8 +441,8 @@ type Loader struct {
// to calculate remainingTimeGauge metric, map will be init in `l.prepare.prepareDataFiles`
dbTableDataTotalSize map[string]map[string]*atomic.Int64
dbTableDataFinishedSize map[string]map[string]*atomic.Int64
dbTableDataLastFinishedSize map[string]map[string]int64
dbTableDataLastUpdatedTime time.Time
dbTableDataLastFinishedSize map[string]map[string]*atomic.Int64
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would better to implement in object oriented way

map[string]map[string]*tableData
type tableData struct {
  total atomic.Int64
  finished atomic.Int64
  lastFinished atomic.Int64
}

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we're going to deprecate Loader soon, currently I only want to fix bugs with least effort 😂

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@lance6716 lance6716 added the require-LGT1 Indicates that the PR requires an LGTM. label Nov 15, 2021
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LGTM

@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Nov 16, 2021
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: 1d1b494

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Nov 16, 2021
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/run-integration-test

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/run-integration-test

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Codecov Report

Merging #3459 (1d1b494) into master (24030f8) will increase coverage by 0.5992%.
The diff coverage is 64.0186%.

@@               Coverage Diff                @@
##             master      #3459        +/-   ##
================================================
+ Coverage   56.5356%   57.1349%   +0.5992%     
================================================
  Files           211        228        +17     
  Lines         22798      23462       +664     
================================================
+ Hits          12889      13405       +516     
- Misses         8598       8712       +114     
- Partials       1311       1345        +34     

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In response to a cherrypick label: new pull request created: #3468.

3AceShowHand pushed a commit to ti-chi-bot/tiflow that referenced this pull request Jan 13, 2022
overvenus pushed a commit that referenced this pull request Jan 18, 2022
* fix the txn_batch_size metric inaccuracy bug when the sink target is MQ

* address comments

* add comments for exported functions

* fix the compiling problem

* workerpool: limit the rate to output deadlock warning (#3775) (#3795)

* tests(ticdc): set up the sync diff output directory correctly (#3725) (#3741)

* relay(dm): use binlog name comparison (#3710) (#3712)

* dm/load: fix concurrent call Loader.Status (#3459) (#3468)

* cdc/sorter: make unified sorter cgroup aware (#3436) (#3439)

* tz (ticdc): fix timezone error (#3887) (#3906)

* pkg,cdc: do not use log package (#3902) (#3940)

* *: rename repo from pingcap/ticdc to pingcap/tiflow (#3959)

* http_*: add log for http api and refine the err handle logic (#2997) (#3307)

* etcd_worker: batch etcd patch (#3277) (#3389)

* http_api (ticdc): check --cert-allowed-cn before add server common name (#3628) (#3882)

* kvclient(ticdc): fix kvclient takes too long time to recover (#3612) (#3663)

* owner: fix owner tick block http request (#3490) (#3530)

* dm/syncer: use downstream PK/UK to generate DML (#3168) (#3256)

* dep(dm): update go-mysql (#3914) (#3934)

* dm/syncer: multiple rows use downstream schema (#3308) (#3953)

* errorutil,sink,syncer: add errorutil to handle ignorable error (#3264) (#3995)

* dm/worker: don't exit when failed to read checkpoint in relay (#3345) (#4005)

* syncer(dm): use an early location to reset binlog and open safemode (#3860)

* ticdc/owner: Fix ddl special comment syntax error (#3845) (#3978)

* dm/scheduler: fix inconsistent of relay status (#3474) (#4009)

* owner,scheduler(cdc): fix nil pointer panic in owner scheduler (#2980) (#4007) (#4016)

* config(ticdc): Fix old value configuration check for maxwell protocol (#3747) (#3783)

* sink(ticdc): cherry pick sink bug fix to release 5.3 (#4083)

* master(dm): clean and treat invalid load task (#4004) (#4145)

* loader: fix wrong progress in query-status for loader (#4093) (#4143)

close #3252

* ticdc/processor: Fix backoff base delay misconfiguration (#3992) (#4028)

* dm: load table structure from dump files (#3295) (#4163)

* compactor: fix duplicate entry in safemode (#3432) (#3434) (#4088)

* kv(ticdc): reduce eventfeed rate limited log (#4072) (#4111)

close #4006

* metrics(ticdc): add resolved ts and add changefeed to dataflow (#4038) (#4104)

* This is an automated cherry-pick of #4192

Signed-off-by: ti-chi-bot <[email protected]>

* retry(dm): align with tidb latest error message (#4172) (#4254)

close #4159, close #4246

* owner(ticdc): Add bootstrap and try to fix the meta information in it (#3838) (#3865)

* redolog: add a precleanup process when s3 enable (#3525) (#3878)

* ddl(dm): make skipped ddl pass `SplitDDL()` (#4176) (#4227)

close #4173

* cdc/sink: remove Initialize method from the sink interface (#3682) (#3765)

Co-authored-by: Ling Jin <[email protected]>

* http_api (ticdc): fix http api 'get processor' panic. (#4117) (#4123)

close #3840

* sink (ticdc): fix a deadlock due to checkpointTs fall back in sinkNode (#4084) (#4099)

close #4055

* cdc/sink: adjust kafka initialization logic (#3192) (#4162)

* try fix conflicts.

* This is an automated cherry-pick of #4192

Signed-off-by: ti-chi-bot <[email protected]>

* fix conflicts.

* fix conflicts.

Co-authored-by: zhaoxinyu <[email protected]>
Co-authored-by: amyangfei <[email protected]>
Co-authored-by: lance6716 <[email protected]>
Co-authored-by: sdojjy <[email protected]>
Co-authored-by: Ling Jin <[email protected]>
Co-authored-by: 3AceShowHand <[email protected]>
@lance6716 lance6716 deleted the fix-print-status branch October 13, 2022 08:37
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load unit will panic if query-status too often load progress in query-status sometimes become smaller
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