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https://issues.apache.org/jira/browse/ZOOKEEPER-4706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17768292#comment-17768292
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Kezhu Wang edited comment on ZOOKEEPER-4706 at 9/23/23 2:06 PM:
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I presented a "circumvent" to use {{zxid}} as "sequence number" with new
{{CreateMode}}. The code is simple and demands no on-disk wire changes. But I
feel pessimistic as it diverge sequential nodes to consecutive ones and
non-consecutive ones. This clearly mark itself a "circumvent" but not a fix. In
long term, I prefer to extend {{Stat.cversion}} to 64-bit as it fit ZooKeeper
more naturally comparing to how it currently function. So, I plan to close that
pr soon. Feel free to reopen it if any committers interest.
was (Author: kezhuw):
I presented a "circumvent" to use {{zxid}} as "sequence number" with new
{{CreateMode}}. The code is simple and demands no on-disk wire changes. But I
feel pessimistic as it diverge sequential nodes to consecutive ones and
non-consecutive ones. This clearly mark itself a "circumvent" but not a fix. In
long term, I prefer to extend {{Stat.cversion}} to 64-bit as it fit ZooKeeper
more naturally as how it currently function. So, I plan to close that pr soon.
Feel free to reopen it if any committers interest.
> Use 64 bits counter to ensure monotonically increasing and uniqueness of
> sequence node name
> -------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-4706
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4706
> Project: ZooKeeper
> Issue Type: New Feature
> Components: jute, server
> Reporter: Li Wang
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> With 32 bits counter, the sequence number used for sequential node name is
> not monotonically increase and unique any more after overflow.
> To fix the issue, we would want to use 64 bits counter.
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