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https://issues.apache.org/jira/browse/ZOOKEEPER-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Germán Blanco updated ZOOKEEPER-1794:
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Description: The goal of this task is to add a hash number to each
transaction in the transaction history. This hash number will be the same in
all members of the quorum, since it shall have the same result if the members
have the same transaction history. That means that there will be no need to
send any new information between members of the quorum, during the broadcast
phase. The hash number will be checked by the leader when learners try to
connect, and it shall also be sent together with the snapshot during
synchronisation. If the hash number does not match, the synchronisation shall
be done with a snapshot in order to overwrite the conflicts in the transaction
history. (was: The goal of this task is to add a hash number to each
transaction in the transaction history. This hash number will be the same in
all members of the quorum, since it shall have the same result if the members
have the same transaction history. That means that there will be no need to
send any new information between members of the quorum. The hash number will be
checked by the leader when learnes try to connect. If the hash number does not
match, the synchronization will be done with a snashot in order to overwrite
the conflicts in the transaction history.)
Remaining Estimate: 336h
Original Estimate: 336h
Release Note: The snapshot file name will be updated by adding also
the hash. That means a name like "snapshot.100001.123533" where 100001 is the
zxid and 123533 is the hash. The server will continue to be able to read files
without the hash in the name.
> Add hash check to transaction history in quorum servers
> -------------------------------------------------------
>
> Key: ZOOKEEPER-1794
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1794
> Project: ZooKeeper
> Issue Type: Sub-task
> Components: quorum
> Reporter: Germán Blanco
> Assignee: Germán Blanco
> Fix For: 3.4.6, 3.5.0
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> The goal of this task is to add a hash number to each transaction in the
> transaction history. This hash number will be the same in all members of the
> quorum, since it shall have the same result if the members have the same
> transaction history. That means that there will be no need to send any new
> information between members of the quorum, during the broadcast phase. The
> hash number will be checked by the leader when learners try to connect, and
> it shall also be sent together with the snapshot during synchronisation. If
> the hash number does not match, the synchronisation shall be done with a
> snapshot in order to overwrite the conflicts in the transaction history.
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