Add Deploy Operation and Maintenance FAQs #3241
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/label translation/from-docs-cn |
TomShawn
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/label status/PTAL |
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/label needs-cherry-pick-4.0 |
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Joyinqin
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Joyinqin
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Joyinqin
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Jul 21, 2020
faq/deploy-and-maintain-faq.md
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| #### What's the relationship between the TiDB cluster capacity (QPS) and the number of nodes? How does TiDB compare to MySQL? | ||
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| - Within 10 nodes, the relationship between TiDB write capacity (Insert TPS) and the number of nodes is roughly 40% linear increase. Because MySQL uses single-node write, its write capacity cannot be scaled. | ||
| - In MySQL, the read capacity can be increased by adding secondary, but the write capacity cannot be increased except using sharding, which has many problems. |
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“具体参考方案虽好，成本先行：数据库 Sharding+Proxy 实践解析“是中文文章 英文这里省略掉了。
Joyinqin
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Jul 21, 2020
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| This is because the address in the startup parameter has been registered in the PD cluster by other TiKVs. Common conditions that cause this error: There is no data folder in the path specified by TiKV `--data-dir` (no update --data-dir after deleting or moving), restart the TiKV with the previous parameters.Please try [store delete](https://github.com/pingcap/pd/tree/55db505e8f35e8ab4e00efd202beb27a8ecc40fb/tools/pd-ctl#store-delete--label--weight-store_id----jqquery-string) function of pd-ctl, delete the previous store, and then restart TiKV. | ||
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| #### TiKV primary node and secondary node use the same compression algorithm, why the results are different? |
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Not sure whether 'node' can be used here.
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/merge |
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@lilin90 Oops! This PR requires at least 2 LGTMs to merge. The current number of |
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Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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cherry pick to release-4.0 in PR #3362 |
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* cherry pick #3241 to release-4.0 Signed-off-by: ti-srebot <ti-srebot@pingcap.com> * Update faq/deploy-and-maintain-faq.md * Update benchmark sysbench link Co-authored-by: JoyinQ <56883733+Joyinqin@users.noreply.github.com> Co-authored-by: Lilian Lee <lilin@pingcap.com>
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