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https://issues.apache.org/jira/browse/OAK-4104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Dürig updated OAK-4104:
-------------------------------
Issue Type: Task (was: Technical task)
Parent: (was: OAK-2833)
> Refactor reading records from segments
> --------------------------------------
>
> Key: OAK-4104
> URL: https://issues.apache.org/jira/browse/OAK-4104
> Project: Jackrabbit Oak
> Issue Type: Task
> Components: segment-tar
> Reporter: Michael Dürig
> Priority: Major
> Labels: technical_debt
>
> We should refactor how records (e.g. node states) are read from segments.
> Currently this is scattered and replicated across various places. All of
> which hard coding certain indexes into a byte buffer (see calls to
> {{Record.getOffset}} for how bad this is).
> The current implementation makes it very hard to maintain the code and evolve
> the segment format. We should optimally have one place per segment version
> defining the format as a single source of truth which is then reused by the
> various parts in of the SegmentMK, tooling and tests.
> We should also evaluate 3rd party data serialisation libraries, which could
> make our lives easier. Focus should be on ease of use, separation of concerns
> (schema vs. implementation), compactness of format, efficient en/decoding,
> support for schema evolution. Possible candidates include [protocol
> buffers|https://developers.google.com/protocol-buffers/] and [Apache
> Avro|http://avro.apache.org/].
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