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https://issues.apache.org/jira/browse/ZOOKEEPER-1691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13863881#comment-13863881
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Helen Hastings commented on ZOOKEEPER-1691:
-------------------------------------------
I fixed part 2 to issue a BadArgument error. I'm holding off on uploading the
patch until we resolve what I'm about to bring up.
When I start two servers with standaloneEnabled = true and attempt to remove
one (either the leader or follower) from the configuration I get the following
error, as expected:
"Error:KeeperErrorCode = BadArguments for Reconfig failed - new configuration
must include at least 2 followers."
When I start two servers with standaloneEnabled = true and force the leader to
shut down I get the following error, as expected:
"shutdown Leader! reason: Not sufficient followers synced, only synced with
sids: [ 2 ]" (which occurs from Leader.java when there is no longer a quorum).
When I start two servers with standaloneEnabled = true and force the follower
to shut down, the leader sets its state to LOOKING but hangs because it cannot
connect to the shut down server. This is the case before my changes as well.
Can you let me know under what circumstances are you removing 1 server from 2
servers with the remaining server running as normal so I can try to duplicate
it?
I also spent some time checking other edge cases and found everything to be
working fine.
Thanks!
Helen
> Add a flag to disable standalone mode
> -------------------------------------
>
> Key: ZOOKEEPER-1691
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1691
> Project: ZooKeeper
> Issue Type: Improvement
> Components: quorum
> Reporter: Michi Mutsuzaki
> Assignee: Helen Hastings
> Fix For: 3.5.0
>
> Attachments: ZOOKEEPER-1691.patch, ZOOKEEPER-1691.patch,
> ZOOKEEPER-1691.patch, ZOOKEEPER-1691.patch, ZOOKEEPER-1691.patch,
> ZOOKEEPER-1691.patch, test scenario.txt
>
>
> Currently you cannot use dynamic reconfiguration to bootstrap zookeeper
> cluster because the server goes into standalone mode when there is only one
> server in the cluster.
> --Michi
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