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From Vyacheslav Daradur <daradu...@gmail.com>
Subject Re: question: How data are stored in IgniteCache?
Date Mon, 17 Apr 2017 12:04:20 GMT
>> When you transfer an object over the wire or put it into a persistent
store (withKeepBinary property enabled) then only the byte array is used.
If we put objects into persistent store and withKeepBinary property is
DISABLED, in wich form it will be stored?

2017-04-16 18:29 GMT+03:00 Denis Magda <dmagda@apache.org>:

> 1. When you transfer an object over the wire or put it into a persistent
> store (withKeepBinary property enabled) then only the byte array is used.
> 2. No
>
> —
> Denis
>
> > On Apr 15, 2017, at 1:51 PM, Vyacheslav Daradur <daradurvs@gmail.com>
> wrote:
> >
> >>> If we use a cache which is configured to use binary mashaller:
> >>> 1. In which cases a placed in the cache object (serialized object)
> won't
> > be wrapped?
> >>> 2. In which cases a placed in the cache object won't be serialized (to
> > byte array) and will be stored as is?
> >
> > I meant: Are there any cases of described (1,2) situations.
> > If yes, which cases?
> >
> > 2017-04-15 23:44 GMT+03:00 Vyacheslav Daradur <daradurvs@gmail.com>:
> >
> >> If we use a cache which is configured to use binary mashaller:
> >> 1. In which cases a placed in the cache object (serialized object) won't
> >> be wrapped?
> >> 2. In which cases a placed in the cache object won't be serialized (to
> >> byte array) and will be stored as is?
> >>
> >> 2017-04-14 20:03 GMT+03:00 Denis Magda <dmagda@apache.org>:
> >>
> >>> If a serialized object is stored in an on-heap cache then it will be
> >>> wrapped by BinaryObjectImp but if it’s an off-heap cache then
> >>> BinaryObjectOffHeapImpl is used instead.
> >>>
> >>> —
> >>> Denis
> >>>
> >>>> On Apr 14, 2017, at 12:32 AM, Vyacheslav Daradur <daradurvs@gmail.com
> >
> >>> wrote:
> >>>>
> >>>>>> 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
> >>>
> >>>
> >>
> >>
> >> --
> >> Best Regards, Vyacheslav
> >>
> >
> >
> >
> > --
> > Best Regards, Vyacheslav
>
>


-- 
Best Regards, Vyacheslav

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