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Protection from inconsistent ZooKeeper clusters. #5161

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alexey-milovidov opened this issue May 1, 2019 · 1 comment
Open

Protection from inconsistent ZooKeeper clusters. #5161

alexey-milovidov opened this issue May 1, 2019 · 1 comment
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@yariks5s
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comp-zookeeper Zookeeper operations usability warmup task The task for new ClickHouse team members. Low risk, moderate complexity, no urgency.

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@alexey-milovidov
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If a user list ZooKeeper servers from different clusters in ClickHouse configuration, weird errors will happen.
@alexey-milovidov
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With four letter commands:

  • srvr or stat - check that only one node is leader; check that number of nodes does not differ more than 1% and more than 1000.
  • conf - check that every serverId is different;

@stale stale bot added the stale label Oct 20, 2019
@ClickHouse ClickHouse deleted a comment from stale bot Jun 11, 2020
@filimonov filimonov added the comp-zookeeper Zookeeper label Jun 11, 2020
@alexey-milovidov alexey-milovidov added the warmup task The task for new ClickHouse team members. Low risk, moderate complexity, no urgency. label Oct 20, 2021
@alexey-milovidov alexey-milovidov mentioned this issue Sep 29, 2023
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@yakov-olkhovskiy yakov-olkhovskiy self-assigned this Nov 7, 2023
@yariks5s yariks5s self-assigned this Jan 24, 2024
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comp-zookeeper Zookeeper operations usability warmup task The task for new ClickHouse team members. Low risk, moderate complexity, no urgency.
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@filimonov @alexey-milovidov @yakov-olkhovskiy @yariks5s