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From Alexey Goncharuk <alexey.goncha...@gmail.com>
Subject Re: prepare phase messages handlers question
Date Wed, 22 Mar 2017 20:17:49 GMT
Yes, that is correct. Note, however, that in this case, node1 will send a
NearTxPrepareRequest to node2 and lockMultiple() will be called on node2,
not on node1.

2017-03-22 20:26 GMT+03:00 ALEKSEY KUZNETSOV <alkuznetsov.sb@gmail.com>:

> correct me if im wrong. Consider node1 called cache.put(key1, val1);
> So node1 creates cacheEntry1. If Affinity function decides node2 holds key1
> then cacheEntry1 will be detached, otherwise cacheEntry isnt detached.
>
> ср, 22 Мар 2017 г., 18:43 Alexey Goncharuk <alexey.goncharuk@gmail.com>:
>
> > This assertion ensures that an entry locked by an optimistic transaction
> is
> > locked on a primary or backup node. Like you said, if an entry is
> detached,
> > it means that it is created by a node to which this entry does not
> belong,
> > and thus must not be locked.
> >
> > --AG
> >
> > 2017-03-22 18:37 GMT+03:00 ALEKSEY KUZNETSOV <alkuznetsov.sb@gmail.com>:
> >
> > > When optimistic transaction occures, there is a lock on entities -
> > > org.apache.ignite.internal.processors.cache.transactions.
> > > IgniteTxManager#lockMultiple
> > > Don't you know, why there is a strange string inside this method :
> > >
> > > assert !entry1.detached() : "Expected non-detached entry for near
> > > transaction " +
> > >     "[locNodeId=" + cctx.localNodeId() + ", entry=" + entry1 + ']';
> > >
> > > As far as I know, detached entry is one, created by non-local node.
> > >
> > > ср, 22 мар. 2017 г. в 18:08, Alexander Fedotov <
> > > alexander.fedotoff@gmail.com
> > > >:
> > >
> > > > Hi,
> > > >
> > > > These messages are part of 2-phase commit protocol.
> > > > They are sent from a primary node to backup nodes.
> > > >
> > > >
> > > > On Mon, Mar 20, 2017 at 7:41 PM, ALEKSEY KUZNETSOV <
> > > > alkuznetsov.sb@gmail.com
> > > > > wrote:
> > > >
> > > > > Hi all!
> > > > > What is the point of sending GridDhtTxPrepareRequest and
> > > > > GridDhtTxPrepareResponse messages?
> > > > > What is the logic behind processDhtTxFinishRequest and
> > > > > processDhtTxPrepareResponse ?
> > > > > --
> > > > >
> > > > > *Best Regards,*
> > > > >
> > > > > *Kuznetsov Aleksey*
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Kind regards,
> > > > Alex.
> > > >
> > > --
> > >
> > > *Best Regards,*
> > >
> > > *Kuznetsov Aleksey*
> > >
> >
> --
>
> *Best Regards,*
>
> *Kuznetsov Aleksey*
>

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