Michael Dürig created OAK-3550:
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             Summary: Add meta data to segments
                 Key: OAK-3550
                 URL: https://issues.apache.org/jira/browse/OAK-3550
             Project: Jackrabbit Oak
          Issue Type: New Feature
          Components: segmentmk
            Reporter: Michael Dürig
            Assignee: Michael Dürig


For various kinds of tooling it would be good to have additional meta data 
available within segments. Like which segment writer wrote (i.e. system or 
compaction) the segment, a time stamp, the revision gc generation etc. 

Such meta data could live in a regular String record right at the beginning of 
the segment. As such it would always occupy the first slot of the root records 
and would be very easy to get to in tooling. Additionally it would be written 
as regular content and thus wouldn't require any changes in the segment format. 



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