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From Vyacheslav Daradur <daradu...@gmail.com>
Subject Re: question: How data are stored in IgniteCache?
Date Fri, 14 Apr 2017 07:32:03 GMT
>> when it’s stored in memory in a specific cache partition
Does that mean that any serialized object is always stored IN MEMORY as is
wrapped by BinaryObjectImpl?



2017-04-14 3:42 GMT+03:00 Denis Magda <dmagda@apache.org>:

> A serialized object is always wrapped by BinaryObjectImpl when it’s stored
> in memory in a specific cache partition or you access it from your
> application in a form of BinaryObject. However, when you transfer the
> object over the wire or put it into a persistent store (withKeepBinary
> property enabled) then only the byte array is used.
>
> —
> Denis
>
> > On Apr 13, 2017, at 12:21 AM, Vyacheslav Daradur <daradurvs@gmail.com>
> wrote:
> >
> > Denis, thank you for answers.
> >
> > I meant another.
> >
> > For example:
> > Cache queries use a BinaryObjectImpl and a withKeepBinary-mode use it, so
> > looks like all actions on serialized object are make via a
> BinaryObjectImpl.
> >
> > Does a serialized object always is stored as BinaryObjectImpl or it will
> be
> > wrapped on demand?
> >
> > 2017-04-12 22:34 GMT+03:00 Denis Magda <dmagda@apache.org>:
> >
> >> A Java wrapper around an actual binary byte array with some additional
> >> fields and methods to work with the serialized data.
> >>
> >> —
> >> Denis
> >>
> >>> On Apr 12, 2017, at 8:33 AM, Vyacheslav Daradur <daradurvs@gmail.com>
> >> wrote:
> >>>
> >>> In what cases BinaryObjecImpl is used?
> >>>
> >>> 2017-04-12 18:08 GMT+03:00 Denis Magda <dmagda@apache.org>:
> >>>
> >>>> Hi,
> >>>>
> >>>> A cache entry is always stored in a binary format (byte array) in a
> >> cache.
> >>>> Even when you transfer an entry from one node to another, as a result
> of
> >>>> cache.put(…), operation the entry will be serialized into the binary
> >> format
> >>>> and transferred over the wire.
> >>>>
> >>>> —
> >>>> Denis
> >>>>
> >>>>> On Apr 12, 2017, at 1:11 AM, Vyacheslav Daradur <daradurvs@gmail.com
> >
> >>>> wrote:
> >>>>>
> >>>>> Hello Igniters!
> >>>>>
> >>>>> I have one conceptual question:
> >>>>>
> >>>>> When we put an object in IgniteCache, how it is stored?
> >>>>>
> >>>>> As I understand, after marshalling we have an array of bytes,
> >>>>> 1) in a local node it is wrapped in BinaryObjectImpl and stored
in
> >> memory
> >>>>> 2) it is sent to remote node as byte array where it will be wrapped
> in
> >>>>> BinaryObjectImpl and be stored in memory
> >>>>>
> >>>>> --
> >>>>> Best Regards, Vyacheslav
> >>>>
> >>>>
> >>>
> >>>
> >>> --
> >>> Best Regards, Vyacheslav
> >>
> >>
> >
> >
> > --
> > Best Regards, Vyacheslav
>
>


-- 
Best Regards, Vyacheslav

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