[jira] [Updated] (IGNITE-5558) Add ability to read WAL outside of an Ignite node

["Alexey Goncharuk (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-5558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Goncharuk updated IGNITE-5558:
-------------------------------------
    Fix Version/s:     (was: 2.2)
                   2.1

> Add ability to read WAL outside of an Ignite node
> -------------------------------------------------
>
>                 Key: IGNITE-5558
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5558
>             Project: Ignite
>          Issue Type: Improvement
>          Components: cache
>    Affects Versions: 2.1
>            Reporter: Alexey Goncharuk
>             Fix For: 2.1
>
>
> Currently, the WAL iterator can be obtained from the WAL manager when an Ignite node is up and running.
> However, it may be extremely useful to read WAL in an 'offline' mode, when a node is not started up. This may be required for crash analysis or to export committed data to some external systems.
> In the future we can make this even a public interface, however as a starting point, I would like to keep it in private package because moving to the public package will require Iterator and records to be public too.
> So, as a starting point, we need:
>  * An object that will allow us to get WALIterator instances (probably, should be closeable)
>  * A method on this object which will create an iterator by a file name or file names
> Using this object should not require an active Ignite instance running.



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