Vladimir Ozerov created IGNITE-1961:
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Summary: Binary reader: do not read field position from footer in
case of successful speculation.
Key: IGNITE-1961
URL: https://issues.apache.org/jira/browse/IGNITE-1961
Project: Ignite
Issue Type: Task
Components: general, interop
Affects Versions: ignite-1.4
Reporter: Vladimir Ozerov
Assignee: Vladimir Ozerov
Priority: Critical
Fix For: 1.5
Currently we are trying to speculatively guess field ID and order. If
speculation succeeds (which is almost always true during normal
deserialization) we have pretty cool performance gain.
However, when speculation succeeds we still reads field position from footer.
There is no need for this actually. Instead, we can rely on the fact that
stream is already positioned correctly.
To employ this technique we must ensure that when field is read, stream pointer
is always set right after the field. Currently this is not the case for
"unmarshal" and "doReadPortableObject" methods in reader. They must be reworked
to allow for this opto.
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