[jira] [Created] (IGNITE-1814) Portables: compact footer offsets.

[Anton Vinogradov (Jira)]

Vladimir Ozerov created IGNITE-1814:
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             Summary: Portables: compact footer offsets.
                 Key: IGNITE-1814
                 URL: https://issues.apache.org/jira/browse/IGNITE-1814
             Project: Ignite
          Issue Type: Task
          Components: general
    Affects Versions: ignite-1.4
            Reporter: Vladimir Ozerov
            Assignee: Vladimir Ozerov
            Priority: Critical
             Fix For: 1.5


Currently we write field offset as int (4 bytes).
But in most cases object will have length <256 bytes, or at least <65536 bytes. So we can write these offsets as 1 or 2 bytes instead of 4.

Let's do the following:
1) If object length < 256 bytes, write offsets as 1 bytes, set 0x4h flag in header.
2) If object length < 65536 bytes, write offsets as 2 bytes, set 0x8h flag in header.



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