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distributedio / titan

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titan 并发控制疑问

2
zhenyuxie
zhenyuxie commented Oct 23, 2019

最近测试 titan 性能，部署了 3 个节点的 tikv 集群，单独部署 titan，然后压测时发现，相同的数据，每个节点平均 30+ region 时，GET qps 大概 7w。调整 region 数后，每个 节点的 region 为1300+个，再次用同样的命令压测，GET qps 能达到 13w，请问 titan 是否有根据 region 数做并发控制呢？

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good first issue

sqlancer / sqlancer

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pingcap / br

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Backup will skip empty databases

5
YuJuncen
YuJuncen commented Jun 8, 2020

Please answer these questions before submitting your issue. Thanks!

  1. What did you do?
    If possible, provide a recipe for reproducing the error.
    #317 said that we support restore empty database and table, but for now, empty databases won't be backup at all!

Let we do it:

  • Make an empty database;
  • Backup it by BR;
  • Drop it, and restore.
  1. What did you expect to see?
    The emp
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bug difficulty/1-easy good first issue priority/P2

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