reference/configuration: add description about TiDB txn-total-size-limit by tiancaiamao · Pull Request #2456 · pingcap/docs-cn

tiancaiamao · 2020-03-13T01:48:58Z

See pingcap/docs#2002

tiancaiamao · 2020-03-13T01:52:00Z

jackysp · 2020-03-13T03:53:00Z

+
+ TiDB 事务大小限制
+ 默认值：104857600
+ 单个事务中，所有的 key-value 记录的总大小不能超过该限制。注意，如果 `binlog` 开启了，该配置项的值不能超过 104857600(100M)，因为 `binlog` 组件不支持同步的事务过大；如果 `binlog` 没开启，该配置项的最大值不超过 10737418240(10G)。


This comment may not be related to the documentation. Should we set a lower limit, if the size is too low, TiDB will not start.

TomShawn · 2020-03-25T05:01:08Z

@tiancaiamao Please address the above comments, thanks!

tiancaiamao · 2020-04-01T07:53:23Z

PTAL @TomShawn @jackysp

TomShawn · 2020-04-01T08:53:07Z


 TiDB 设置了单个事务的键值对的总大小不超过 100 MB，这个默认值可以通过配置文件中的配置项 `txn-total-size-limit` 进行修改，最大支持到 10GB。实际的单个事务大小限制还取决于用户的内存，执行大事务时 TiDB 进程的内存消耗大约是事务大小 6 倍以上。
+
+在 4.0 以前的版本，TiDB 限制了单个事务的键值对的总数量不超过 30 万条，在 4.0 之后的版本没有这项限制。


Please update this part in #2002.

There is nothing about it here https://github.com/pingcap/docs/blob/3a61188f3c8cd78369d50f2553edcbbd3273b022/reference/transactions/overview.md

The whole block is missing

This is not the latest document. This is : https://github.com/pingcap/docs/blob/master/reference/transactions/overview.md.

@tiancaiamao The missing part is aligned in pingcap/docs#2280. PTAL

jackysp

LGTM

TomShawn

LGTM

sre-bot · 2020-04-08T07:55:02Z

/run-all-tests

) * *: update some guiding resources #2628 * readme: update release-3.0 description * sql: add more info about load data (#2568) * reference/performance: specify index name of primary key for USE_INDEX_MERGE (#2350) Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> * how-to: fix typos in placement rules doc (#2643) * reference: update TiFlash tune doc (#2642) * reference: update tiflash tune doc * Update tune-performance.md * Update reference/tiflash/tune-performance.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> * TiUP: document how to use TiUP to deploy TiDB v4.0 (#2635) * Use of TiUP to deploy TiDB of v4.0 version * Use of TiUP to deploy TiDB of v4.0 version * Use of TiUP to deploy TiDB of v4.0 version * Use of TiUP to deploy TiDB of v4.0 version * refine content and format * refine format * Use of TiUP to deploy TiDB of v4.0 version * Use of TiUP to deploy TiDB of v4.0 version * Modify the file name to lowercase Modify the file name to lowercase * fix ci * refine the image names in media for SEO reasons * Use of TiUP to deploy TiDB of v4.0 version * Update how-to/deploy/orchestrated/tiup.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update how-to/deploy/orchestrated/tiup.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Use of TiUP to deploy TiDB of v4.0 version * refine content and format * Update how-to/deploy/orchestrated/tiup.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * refine title * Update how-to/deploy/orchestrated/tiup.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * add hyperlinks * fix ci * refine title * remove an unfinished note Co-authored-by: yikeke <yikeke@pingcap.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> * tiflash: update tiflash deploy document (ansible -> tiup) (#2641) * update tiflash doc for 4.0 * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/scale.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * minor edits to refine format Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> Co-authored-by: yikeke <yikeke@pingcap.com> * tiflash: update tiflash deploy document (ansible -> tiup) (#2641) * update tiflash doc for 4.0 * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/scale.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * Update reference/tiflash/deploy.md Co-Authored-By: Keke Yi <40977455+yikeke@users.noreply.github.com> * minor edits to refine format Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> Co-authored-by: yikeke <yikeke@pingcap.com> * tiup: fix tiup deployment doc (#2651) * Modify the details * Modify the details * reference/configuration: add description about TiDB txn-total-size-limit (#2456) * reference/configuration: add tidb_row_format_version (#2605) * Revert "Merge branch 'master' into pr/2650" This reverts commit 2430b5c, reversing changes made to 2ea8409. Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> Co-authored-by: Lilian Lee <lilin@pingcap.com> Co-authored-by: Lingyu Song <songlingyu@pingcap.com> Co-authored-by: Kenan Yao <cauchy1992@gmail.com> Co-authored-by: TomShawn <41534398+TomShawn@users.noreply.github.com> Co-authored-by: xufei <xufei@pingcap.com> Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: lzs <43946384+superlzs0476@users.noreply.github.com> Co-authored-by: yikeke <yikeke@pingcap.com> Co-authored-by: Liangliang Gu <marsishandsome@gmail.com> Co-authored-by: tiancaiamao <tiancaiamao@gmail.com> Co-authored-by: lysu <sulifx@gmail.com>

yikeke · 2020-04-14T03:00:41Z

/run-cherry-picker

yikeke · 2020-04-14T03:04:06Z

/run-cherry-picker

…mit (pingcap#2456)

sre-bot · 2020-04-14T03:04:45Z

cherry pick to release-4.0 in PR #2727

…mit (#2456) (#2727) Co-authored-by: tiancaiamao <tiancaiamao@gmail.com>

…mit (pingcap#2456)

reference/configuration: add description about TiDB txn-total-size-limit

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reference/configuration: add description about TiDB txn-total-size-limit pingcap/docs#2002

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tiancaiamao added size/large Changes of a large size. v4.0 This PR/issue applies to TiDB v4.0. size/small Changes of a small size. and removed size/large Changes of a large size. labels Mar 13, 2020

TomShawn added the translation/done This PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR. label Mar 13, 2020

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tiancaiamao added 3 commits April 1, 2020 15:35

Merge branch 'master' into txn-total-size

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reference/configuration: add description about TiDB txn-total-size-limit (#2002) pingcap/docs#2181

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Merge branch 'master' into txn-total-size

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reference/configuration: add description about TiDB txn-total-size-li…

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reference/configuration: add description about TiDB txn-total-size-limit (#2456) #2727

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reference/transaction: add a description pingcap/docs#2280

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reference/transaction: add a description (#2280) pingcap/docs#2310

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TomShawn removed the requires-followup This PR requires a follow-up task after being merged. label Feb 23, 2021


		TiDB 设置了单个事务的键值对的总大小不超过 100 MB，这个默认值可以通过配置文件中的配置项 `txn-total-size-limit` 进行修改，最大支持到 10GB。实际的单个事务大小限制还取决于用户的内存，执行大事务时 TiDB 进程的内存消耗大约是事务大小 6 倍以上。

		在 4.0 以前的版本，TiDB 限制了单个事务的键值对的总数量不超过 30 万条，在 4.0 之后的版本没有这项限制。

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