reference, media: add tiflash overview doc by ran-huang · Pull Request #2155 · pingcap/docs

ran-huang · 2020-04-03T08:21:50Z

What is changed, added or deleted? (Required)

Add English doc of tiflash-overview.md.
Add an image for TiFlash architecture.

Which TiDB version(s) do your changes apply to? (Required)

master (the latest development version, including v4.0 changes for now)
v3.1 (TiDB 3.1 versions)
v3.0 (TiDB 3.0 versions)
v2.1 (TiDB 2.1 versions)

If you select two or more versions from above, to trigger the bot to cherry-pick this PR to your desired release version branch(es), you must add corresponding labels such as needs-cherry-pick-3.1, needs-cherry-pick-3.0, and needs-cherry-pick-2.1.

What is the related PR or file link(s)?

This PR is translated from:reference: add 11 new documents for TiFlash docs-cn#2603
Other reference link(s): tiflash: add use-tiflash doc #2163

yikeke · 2020-04-03T12:35:11Z

The image was modified once in pingcap/docs-cn#2619. Please upload the latest .jpg image. @ran-huang

Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com>

ilovesoup

My changed made and the rest LGTM

ilovesoup · 2020-04-06T15:19:28Z

+
+It is recommended that you deploy TiFlash in a different node from TiKV to ensure workload isolation. It is also acceptable to deploy TiFlash and TiKV in the same node, if no business isolation is required.
+
+Currently, data cannot be written directly into TiFlash. You need to write data in TiKV and then replicate it to TiFlash, because it connects to the TiDB cluster as a Learner role. TiFlash supports data replication in unit of table, but no data is replicated by default after deployment. To replicate data of a specified table, see [Create TiFlash replicas for tables](/reference/tiflash/use-tiflash.md#create-tiflash-replicas-for-tables).


Technically that is the causal relationship since learner role only accept data from other replica and cannot be operated on directly.

ilovesoup · 2020-04-06T15:19:30Z

+
+It is recommended that you deploy TiFlash in a different node from TiKV to ensure workload isolation. It is also acceptable to deploy TiFlash and TiKV in the same node, if no business isolation is required.
+
+Currently, data cannot be written directly into TiFlash. You need to write data in TiKV and then replicate it to TiFlash, because it connects to the TiDB cluster as a Learner role. TiFlash supports data replication in unit of table, but no data is replicated by default after deployment. To replicate data of a specified table, see [Create TiFlash replicas for tables](/reference/tiflash/use-tiflash.md#create-tiflash-replicas-for-tables).


Technically that is the causal relationship since learner role only accept data from other replica and cannot be operated on directly.

Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com>

TomShawn

LGTM

sre-bot · 2020-04-07T01:32:18Z

Your auto merge job has been accepted, waiting for 2175

yikeke · 2020-04-07T01:36:49Z

/merge

sre-bot · 2020-04-07T01:36:52Z

Your auto merge job has been accepted, waiting for 2175

* reference, media: add tiflash overview doc * update pic * update reference link * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update overview.md * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update overview.md * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update TOC.md Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: TomShawn <41534398+TomShawn@users.noreply.github.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com>

sre-bot · 2020-04-07T01:39:15Z

cherry pick to release-3.1 in PR #2177

Signed-off-by: sre-bot <sre-bot@pingcap.com>

sre-bot · 2020-04-07T01:39:51Z

cherry pick to release-4.0 in PR #2178

* reference, media: add tiflash overview doc * update pic * update reference link * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update overview.md * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update overview.md * Update reference/tiflash/overview.md Co-Authored-By: TomShawn <41534398+TomShawn@users.noreply.github.com> * Update TOC.md Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: TomShawn <41534398+TomShawn@users.noreply.github.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com> Co-authored-by: Ran <huangran@pingcap.com> Co-authored-by: Soup <maxiaoyu@pingcap.com> Co-authored-by: TomShawn <41534398+TomShawn@users.noreply.github.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com>

* cherry pick #2155 to release-4.0 Signed-off-by: sre-bot <sre-bot@pingcap.com> * resolve conflict * Update TOC.md Co-authored-by: Ran <huangran@pingcap.com> Co-authored-by: yikeke <yikeke@pingcap.com> Co-authored-by: Keke Yi <40977455+yikeke@users.noreply.github.com>

reference, media: add tiflash overview doc

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ran-huang added the status/WIP This PR is still working in progress. label Apr 3, 2020

yikeke marked this pull request as ready for review April 3, 2020 12:24

yikeke requested review from TomShawn and yikeke April 3, 2020 12:25

yikeke added needs-cherry-pick-3.1 translation/from-docs-cn This PR is translated from a PR in pingcap/docs-cn. v4.0 This PR/issue applies to TiDB v4.0. labels Apr 3, 2020

yikeke requested a review from ilovesoup April 3, 2020 12:29

ran-huang added 2 commits April 3, 2020 20:44

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Merge branch 'master' into tiflash-overview

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reference, media: add tiflash overview doc (#2155) #2177

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cherry pick pingcap#2155 to release-4.0

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reference, media: add tiflash overview doc (#2155) #2178

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ran-huang deleted the tiflash-overview branch April 7, 2020 02:16


		It is recommended that you deploy TiFlash in a different node from TiKV to ensure workload isolation. It is also acceptable to deploy TiFlash and TiKV in the same node, if no business isolation is required.

		Currently, data cannot be written directly into TiFlash. You need to write data in TiKV and then replicate it to TiFlash, because it connects to the TiDB cluster as a Learner role. TiFlash supports data replication in unit of table, but no data is replicated by default after deployment. To replicate data of a specified table, see [Create TiFlash replicas for tables](/reference/tiflash/use-tiflash.md#create-tiflash-replicas-for-tables).

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ran-huang commented Apr 3, 2020 •

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