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Posted to issues@hbase.apache.org by "Tak-Lon (Stephen) Wu (Jira)" <ji...@apache.org> on 2021/10/15 22:01:00 UTC
[jira] [Commented] (HBASE-26193) Do not store meta region location
as permanent state on zookeeper
[ https://issues.apache.org/jira/browse/HBASE-26193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17429496#comment-17429496 ]
Tak-Lon (Stephen) Wu commented on HBASE-26193:
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in HBASE-24833, [~anoop.hbase] asked if it could be merged to branch-2.4 and I get here, I felt like HBASE-26193 could be merged as well and did cherry-pick onto branch-2.4, but before I open the PR, do you guys here have any concern?
> Do not store meta region location as permanent state on zookeeper
> -----------------------------------------------------------------
>
> Key: HBASE-26193
> URL: https://issues.apache.org/jira/browse/HBASE-26193
> Project: HBase
> Issue Type: Improvement
> Components: meta, Zookeeper
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 2.5.0, 3.0.0-alpha-2
>
>
> As it breaks one of our design rules
> https://hbase.apache.org/book.html#design.invariants.zk.data
> We used to think hbase should be recovered automatically when all the data on zk (except the replication data) are cleared, but obviously, if you clear the meta region location, the cluster will be in trouble, and need to use operation tools to recover the cluster.
> So here, along with the ConnectionRegistry improvements, we should also consider move the meta region location off zookeeper.
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