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https://issues.apache.org/jira/browse/ZOOKEEPER-4681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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krystal he updated ZOOKEEPER-4681:
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Description:
{color:#172b4d}When the cluster is restarted, the uncommitted requests may be
silently persisted in the replica.{color}
{color:#172b4d}Here is a scenario:{color}
{color:#172b4d}Initial condition:
Start the ensemble with three nodes A, B and C with C being the leader{color}
The current epoch is 1
For simplicity of the example, let’s say zxid is a two digit number, with epoch
being the first digit
Create two znodes ‘key0’ and ‘key1’ whose value is ‘0’ and ‘1’, respectively
The zxid is 12 – 11 for creating key0 and 12 for creating key1. (For simplicity
of the example, the zxid gets increased only by transactions directly changing
the data of znodes.)
All the nodes have seen the change 12 and have persistently logged it
was:
{color:#172b4d}When the cluster is restarted, the uncommitted requests may be
silently persisted in the replica.{color}
{color:#172b4d}Here is a scenario:{color}
{color:#172b4d}Initial condition:
Start the ensemble with three nodes A, B and C with C being the leader{color}
> uncommitted request of setting data executed
> --------------------------------------------
>
> Key: ZOOKEEPER-4681
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4681
> Project: ZooKeeper
> Issue Type: Bug
> Components: quorum
> Affects Versions: 3.5.8
> Reporter: krystal he
> Priority: Major
>
> {color:#172b4d}When the cluster is restarted, the uncommitted requests may be
> silently persisted in the replica.{color}
> {color:#172b4d}Here is a scenario:{color}
> {color:#172b4d}Initial condition:
> Start the ensemble with three nodes A, B and C with C being the leader{color}
> The current epoch is 1
> For simplicity of the example, let’s say zxid is a two digit number, with
> epoch being the first digit
> Create two znodes ‘key0’ and ‘key1’ whose value is ‘0’ and ‘1’, respectively
> The zxid is 12 – 11 for creating key0 and 12 for creating key1. (For
> simplicity of the example, the zxid gets increased only by transactions
> directly changing the data of znodes.)
> All the nodes have seen the change 12 and have persistently logged it
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