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https://issues.apache.org/jira/browse/HBASE-20159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16420146#comment-16420146
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Yu Li commented on HBASE-20159:
-------------------------------
Thanks for taking care of this [~yuzhih...@gmail.com].
The addendum lgtm, except for the comments in the catch clause:
{code}
+ try {
+ cluster.getMaster().getAssignmentManager()
.waitForAssignment(RegionInfoBuilder.FIRST_META_REGIONINFO);
+ } catch (NoSuchProcedureException e) {
+ // Expected
+ }
{code}
The NoSuchProcedureException is not **Expected** but something we don't need to
handle (it means the meta is already assigned and we don't need to take any
further action)
> Support using separate ZK quorums for client
> --------------------------------------------
>
> Key: HBASE-20159
> URL: https://issues.apache.org/jira/browse/HBASE-20159
> Project: HBase
> Issue Type: New Feature
> Components: Client, Operability, Zookeeper
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Major
> Fix For: 3.0.0, 2.1.0
>
> Attachments: 20159.addendum, HBASE-20159.patch, HBASE-20159.v2.patch,
> HBASE-20159.v3.patch
>
>
> Currently we are using the same zookeeper quorums for client and server,
> which makes us under risk that if some client connection boost exhausted
> zookeeper, RegionServer might abort due to zookeeper session loss. Actually
> we have suffered from this many times in production.
> Here we propose to allow client to use different ZK quorums, through below
> settings:
> {noformat}
> hbase.client.zookeeper.quorum
> hbase.client.zookeeper.property.clientPort
> hbase.client.zookeeper.observer.mode
> {noformat}
> The first two are for specifying client zookeeper properties, and the third
> one indicating whether the client ZK nodes are in observer mode. If the
> client ZK are not observer nodes, HMaster will take responsibility to
> synchronize necessary meta information (such as meta location and master
> address, etc.) from server to client ZK
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