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https://issues.apache.org/jira/browse/MESOS-43?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Mahler updated MESOS-43:
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Component/s: replicated log
java api
> Reading from beginning() to ending() of a replicated log should have "safe"
> semantics
> --------------------------------------------------------------------------------------
>
> Key: MESOS-43
> URL: https://issues.apache.org/jira/browse/MESOS-43
> Project: Mesos
> Issue Type: Improvement
> Components: java api, replicated log
> Reporter: Benjamin Hindman
> Assignee: Benjamin Hindman
> Priority: Minor
> Labels: twitter
>
> Right now it is possible to that reading from beginning() to ending() of a
> local replica will throw an exception because the local replica may have
> unlearned actions in the log. Creating a local writer *first* is only a
> partial solution because there is still a race after the writer has it's
> underlying coordinator elected but before calling ending() where another
> writer might (get elected and) append other actions to the log. It seems like
> a good solution is one where beginning() and ending() actually return special
> Log::Position objects that can be used to determine how to treat the
> semantics of Reader::read. It might also make sense to have a
> Replica::readFrom and Replica::readTo to help deal with this problem.
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